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< jaybonci> actually d-i stands for "divine intervention" ;) -- in #debian-devel


computers / comp.sys.raspberry-pi / Re: Limiting the capacity of SD cards for the pi

SubjectAuthor
* Limiting the capacity of SD cards for the piBob Latham
+* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|`* Re: Limiting the capacity of SD cards for the piBob Latham
| `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|  `* Re: Limiting the capacity of SD cards for the piBob Latham
|   `- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
+* Re: Limiting the capacity of SD cards for the piIan
|+- Re: Limiting the capacity of SD cards for the piBob Latham
|`* Re: Limiting the capacity of SD cards for the piBob Latham
| +* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |`* Re: Limiting the capacity of SD cards for the piBob Latham
| | +* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | |`* Re: Limiting the capacity of SD cards for the piBob Latham
| | | `* Re: Limiting the capacity of SD cards for the piIan
| | |  `* Re: Limiting the capacity of SD cards for the piBob Latham
| | |   `* Re: Limiting the capacity of SD cards for the piIan
| | |    `* Re: Limiting the capacity of SD cards for the piBob Latham
| | |     +* Re: Limiting the capacity of SD cards for the piIan
| | |     |+- Re: Limiting the capacity of SD cards for the piBob Latham
| | |     |`* Re: Limiting the capacity of SD cards for the pidruck
| | |     | `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | |     |  `* Re: Limiting the capacity of SD cards for the piChris Elvidge
| | |     |   +* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | |     |   |`* Re: Limiting the capacity of SD cards for the piRichard Harnden
| | |     |   | +* Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| | |     |   | |`- Re: Limiting the capacity of SD cards for the piMartin Gregorie
| | |     |   | `- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | |     |   `* Re: Limiting the capacity of SD cards for the piTauno Voipio
| | |     |    +- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | |     |    `- Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| | |     `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | |      +* Re: Limiting the capacity of SD cards for the piChris Elvidge
| | |      |`* Re: Limiting the capacity of SD cards for the piBob Latham
| | |      | `- Re: Limiting the capacity of SD cards for the piChris Elvidge
| | |      `- Re: Limiting the capacity of SD cards for the piBob Latham
| | `* Re: Limiting the capacity of SD cards for the piMartin Gregorie
| |  +* Re: Limiting the capacity of SD cards for the piBob Latham
| |  |+* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  ||+* Re: Limiting the capacity of SD cards for the piPancho
| |  |||+* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  ||||`* Re: Limiting the capacity of SD cards for the piPancho
| |  |||| +* Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| |  |||| |`* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  |||| | +* Re: Limiting the capacity of SD cards for the piChris Elvidge
| |  |||| | |`- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  |||| | `* Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| |  |||| |  `- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  |||| `- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  |||`- Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| |  ||`* Re: Limiting the capacity of SD cards for the piCharlie Gibbs
| |  || `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  ||  `* Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| |  ||   `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |  ||    `- Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| |  |`- Re: Limiting the capacity of SD cards for the piMartin Gregorie
| |  `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |   +- Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| |   +- Re: Limiting the capacity of SD cards for the piCharlie Gibbs
| |   `- Re: Limiting the capacity of SD cards for the piComputer Nerd Kev
| +* Re: Limiting the capacity of SD cards for the piMrtn
| |+- Re: Limiting the capacity of SD cards for the piIan
| |`* Re: Limiting the capacity of SD cards for the piBob Latham
| | `* Re: Limiting the capacity of SD cards for the piMrtn
| |  `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |   `- Re: Limiting the capacity of SD cards for the piCharlie Gibbs
| `* Re: Limiting the capacity of SD cards for the piBob Latham
|  +* Re: Limiting the capacity of SD cards for the piIan
|  |`* Re: Limiting the capacity of SD cards for the piBob Latham
|  | `* Re: Limiting the capacity of SD cards for the piIan
|  |  `* Re: Limiting the capacity of SD cards for the piBob Latham
|  |   `- Re: Limiting the capacity of SD cards for the piIan
|  +- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|  `- Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
+* Re: Limiting the capacity of SD cards for the piComputer Nerd Kev
|+* Re: Limiting the capacity of SD cards for the piR.Wieser
||`* Re: Limiting the capacity of SD cards for the piChris Elvidge
|| `* Re: Limiting the capacity of SD cards for the piR.Wieser
||  `* Re: Limiting the capacity of SD cards for the piChris Elvidge
||   `- Re: Limiting the capacity of SD cards for the piR.Wieser
|`* Re: Limiting the capacity of SD cards for the piBob Latham
| +* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| |`* Re: Limiting the capacity of SD cards for the piAhem A Rivet's Shot
| | +- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
| | `- Re: Limiting the capacity of SD cards for the piCharlie Gibbs
| `* Re: Limiting the capacity of SD cards for the piComputer Nerd Kev
|  +* Re: Limiting the capacity of SD cards for the piBob Latham
|  |+* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|  ||`* Re: Limiting the capacity of SD cards for the piBob Latham
|  || `- Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|  |`- Re: Limiting the capacity of SD cards for the piIan
|  `* Re: Limiting the capacity of SD cards for the pidruck
|   `* Re: Limiting the capacity of SD cards for the piBob Latham
|    +* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|    |`* Re: Limiting the capacity of SD cards for the piBob Latham
|    | +* Re: Limiting the capacity of SD cards for the piAndy Burns
|    | |`* Re: Limiting the capacity of SD cards for the piBob Latham
|    | | `* Re: Limiting the capacity of SD cards for the piMartin Gregorie
|    | |  `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|    | |   `- Re: Limiting the capacity of SD cards for the piMartin Gregorie
|    | `* Re: Limiting the capacity of SD cards for the piThe Natural Philosopher
|    |  `* Re: Limiting the capacity of SD cards for the piBob Latham
|    +* Re: Limiting the capacity of SD cards for the piAndy Burns
|    `* Re: Limiting the capacity of SD cards for the pidruck
+* Re: Limiting the capacity of SD cards for the piChris Elvidge
`* Re: Limiting the capacity of SD cards for the pi56g.1173

Pages:123456789
Re: Limiting the capacity of SD cards for the pi

<uebke4$28kuk$1@dont-email.me>

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https://www.novabbs.com/computers/article-flat.php?id=7316&group=comp.sys.raspberry-pi#7316

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 09:00:04 +0100
Organization: A little, after lunch
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<5ae5bad225bob@sick-of-spam.invalid> <6508d35c@news.ausics.net>
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 by: The Natural Philosop - Tue, 19 Sep 2023 08:00 UTC

On 19/09/2023 08:32, Bob Latham wrote:
> In article <6508d35c@news.ausics.net>,
> Computer Nerd Kev <not@telling.you.invalid> wrote:
>
>> dd is basically the standard image file (etc.) reader/writer
>> program on Linux. I thought you might have been using it already,
>> but since reading more posts I see you were doing everything from
>> Windows.
>
> Yes, windows to you but I'm in the Black Country so it's Winders
> around here. :-)
>
Oh well in that case just give the pi an 'ecky thump' and it will behave

--
"Strange as it seems, no amount of learning can cure stupidity, and
higher education positively fortifies it."

- Stephen Vizinczey

Re: Limiting the capacity of SD cards for the pi

<5ae6409aefbob@sick-of-spam.invalid>

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 09:21:42 +0100
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 by: Bob Latham - Tue, 19 Sep 2023 08:21 UTC

In article <uebke4$28kuk$1@dont-email.me>,
The Natural Philosopher <tnp@invalid.invalid> wrote:
> On 19/09/2023 08:32, Bob Latham wrote:
> > In article <6508d35c@news.ausics.net>,
> > Computer Nerd Kev <not@telling.you.invalid> wrote:
> >
> >> dd is basically the standard image file (etc.) reader/writer
> >> program on Linux. I thought you might have been using it already,
> >> but since reading more posts I see you were doing everything from
> >> Windows.
> >
> > Yes, windows to you but I'm in the Black Country so it's Winders
> > around here. :-)

> Oh well in that case just give the pi an 'ecky thump' and it will behave

:-)

I though that expression was Yorkshire is that where you are?

Bob.

Re: Limiting the capacity of SD cards for the pi

<uebp3h$29bmk$3@dont-email.me>

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 10:19:45 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Tue, 19 Sep 2023 09:19 UTC

On 19/09/2023 09:21, Bob Latham wrote:
> In article <uebke4$28kuk$1@dont-email.me>,
> The Natural Philosopher <tnp@invalid.invalid> wrote:
>> On 19/09/2023 08:32, Bob Latham wrote:
>>> In article <6508d35c@news.ausics.net>,
>>> Computer Nerd Kev <not@telling.you.invalid> wrote:
>>>
>>>> dd is basically the standard image file (etc.) reader/writer
>>>> program on Linux. I thought you might have been using it already,
>>>> but since reading more posts I see you were doing everything from
>>>> Windows.
>>>
>>> Yes, windows to you but I'm in the Black Country so it's Winders
>>> around here. :-)
>
>> Oh well in that case just give the pi an 'ecky thump' and it will behave
>
> :-)
>
> I though that expression was Yorkshire is that where you are?
>
> Bob.
>
Nay lad, Oi be in Safferk, innit? Land of Queen Boudicca, et al...

--
In theory, there is no difference between theory and practice.
In practice, there is.
-- Yogi Berra

Re: Limiting the capacity of SD cards for the pi

<slrnugiq50.vum.${send-direct-email-to-news1021-at-jusme-dot-com-if@vm46.home.jusme.com>

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From: ${send-d...@jusme.com (Ian)
<${send-direct-email-to-news1021-at-jusme-dot-com-if-you-must}@jusme.com>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 09:23:44 -0000 (UTC)
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 by: Ian - Tue, 19 Sep 2023 09:23 UTC

On 2023-09-19, Bob Latham <bob@sick-of-spam.invalid> wrote:

> Yes, windows to you but I'm in the Black Country so it's Winders
> around here. :-)

Bostin! (ex-Mancunian, now living in Wolverhampton).

--
Ian

"Tamahome!!!" - "Miaka!!!"

Re: Limiting the capacity of SD cards for the pi

<uebsd7$2a1j4$1@dont-email.me>

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From: chr...@mshome.net (Chris Elvidge)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 11:16:04 +0100
Organization: A noiseless patient Spider
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 by: Chris Elvidge - Tue, 19 Sep 2023 10:16 UTC

On 19/09/2023 08:02, The Natural Philosopher wrote:
> On 18/09/2023 20:54, druck wrote:
>> On 18/09/2023 09:29, Ian wrote:
>>> If you log in as "root", or get a root shell by calling "sudo bash",
>>> things work as expected:
>>
>> sudo -i
>>
>> is quicker to type.
>>
>> ---druck
>>
> su - is even quicker
>

'su -' needs a password entered (on my system(s))

--
Chris Elvidge, England
I WILL NOT USE ABBREV.

Re: Limiting the capacity of SD cards for the pi

<uebvcn$2aje2$2@dont-email.me>

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https://www.novabbs.com/computers/article-flat.php?id=7323&group=comp.sys.raspberry-pi#7323

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 12:07:03 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Tue, 19 Sep 2023 11:07 UTC

On 19/09/2023 11:16, Chris Elvidge wrote:
> On 19/09/2023 08:02, The Natural Philosopher wrote:
>> On 18/09/2023 20:54, druck wrote:
>>> On 18/09/2023 09:29, Ian wrote:
>>>> If you log in as "root", or get a root shell by calling "sudo bash",
>>>> things work as expected:
>>>
>>> sudo -i
>>>
>>> is quicker to type.
>>>
>>> ---druck
>>>
>> su - is even quicker
>>
>
> 'su -' needs a password entered (on my system(s))
>
>
so does sudo...on mine

--
"When one man dies it's a tragedy. When thousands die it's statistics."

Josef Stalin

Re: Limiting the capacity of SD cards for the pi

<uec43f$2bed5$1@dont-email.me>

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From: chr...@mshome.net (Chris Elvidge)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 13:27:26 +0100
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 by: Chris Elvidge - Tue, 19 Sep 2023 12:27 UTC

On 18/09/2023 13:43, R.Wieser wrote:
> Chris,
>
>> You can use (g)parted to resize the partition manually (obviously on
>> another machine).
>
> I was/am trying to evade multi-step solutions. Especially ones that cannot
> be automated.
>
> Regards,
> Rudy Wieser
>
>

OK. If you look into usr/lib/raspberrypi-sys-mods/firstboot there's a line:
TARGET_END=$((ROOT_DEV_SIZE - 1))

Change that -1 to whatever you want (e.g. ROOT_DEV_SIZE/2 for a root
partition roughly half the SD card size).
Remember $ROOT_DEV_SIZE is in 512 byte sectors.
See: /sys/block/mmcblk0/size

--
Chris Elvidge, England
MY MOM IS NOT DATING JERRY SEINFELD

Re: Limiting the capacity of SD cards for the pi

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Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 15:00:22 +0200
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 by: R.Wieser - Tue, 19 Sep 2023 13:00 UTC

Chris,

> OK. If you look into usr/lib/raspberrypi-sys-mods/firstboot there's a
> line:
> TARGET_END=$((ROOT_DEV_SIZE - 1))
[snip]

Teriffic ! Thats the kind of solution I was hoping for. Thanks. :-)

Regards,
Rudy Wieser

Re: Limiting the capacity of SD cards for the pi

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From: new...@druck.org.uk (druck)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Tue, 19 Sep 2023 21:21:26 +0100
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 by: druck - Tue, 19 Sep 2023 20:21 UTC

On 18/09/2023 23:46, Computer Nerd Kev wrote:
> Resizing the last parition isn't difficult in a program like
> GParted (which will need to run on Linux). What might be confusing
> then is that your disk imager program will probably still create an
> image file that's too big to fit on smaller SD cards.
It's quite easy to resize the partition file, do a:-

sudo fdisk -l <imagefile>

You'll get something like

Device Boot Start End Sectors Size Id Type
backup.img1 8192 532479 524288 256M c W95 FAT32 (LBA)
backup.img2 532480 15597567 15065088 7.2G 83 Linux

Take the end value of the last partition add 1 and multiply by 512 to
convert from sectors to bytes, then do the calculation again as this is
a destructive action and can't be undone. When you are sure of the
number resize the file using:-

truncate <imagefile> <size>

> The last time I used image file writers on Windows was for floppy
> disk images, so I'm not sure whether modern ones are suitable for
> this. With dd you can use the "bs" and "count" options to stop it
> reading/writing data from/to the image file at the end of the last
> partition (if you get your maths right to work out where that is in
> bytes and divide that by the "bs" value in bytes to use for the
> "count" value - this is one of dd's less convenient aspects).

With dd you don't have to worry, if the source image is bigger than the
destination SD card, dd will just ignore the extra data. But it's still
better to make the file the right size.

---druck

Re: Limiting the capacity of SD cards for the pi

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 13:09:54 +0100
Organization: None
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 by: Bob Latham - Wed, 20 Sep 2023 12:09 UTC

In article <uecvs7$2gotn$1@dont-email.me>,
druck <news@druck.org.uk> wrote:

[Snip]

> It's quite easy to resize the partition file, do a:-

> sudo fdisk -l <imagefile>

> You'll get something like

> Device Boot Start End Sectors Size Id Type
> backup.img1 8192 532479 524288 256M c W95 FAT32 (LBA)
> backup.img2 532480 15597567 15065088 7.2G 83 Linux

> Take the end value of the last partition add 1 and multiply by 512
> to convert from sectors to bytes, then do the calculation again as
> this is a destructive action and can't be undone. When you are
> sure of the number resize the file using:-

> truncate <imagefile> <size>

I read this a few times and couldn't decide for sure if it was what I
wanted. I decided to have a go at it anyway.

Not got a linux machine only PIs doing little jobs.

I got an SD card and formatted it to fat32. I copied an image file to
it that I had created last week and worked.

Put it in a reader and plugged the reader into a PI I use as a spare
for pi-hole and my intranet.

Read my notes from Monday and a video on youtube ..

$ sudo -1
sudo: unable to resolve host intranet-pihole2: Name or service not
known.

Off to a cracking start. No idea what to do about it so ignored it
and pushed on.

# fdisk -l

This gave me a list but mostly ram discs but my usb was there.

From the video I typed...

# mkdir /media/usb-drive
# mount /dev/sda1 /media/usb-drive/
# mount | grep sda1 (no idea, it's in the video)
# cd /media/usb-drive/
# ls
# sudo fdisk -l <imagefile>

Did the sums.

# truncate <imagefile> -s 3896508416

The '-s' caught me out but I got there eventually.

The PI went away for not long maybe 10 seconds and came back.

Thinking I'd done it, I wanted to get it back into a PC to take a
look. I needed to dismount the usb, how ?????

# umount /media/usb-drive (best guess)
target is busy.

This went on for half an hour or so. Surely it can't still be...

I started to type this post and then I had a brain wobble. Have I got
to get off it first?

# cd
# umount /media/usb-drive

Yes! No error.

Hope that's enough to dismount.

Moved usb back to PC. No change in file size.

Used win32diskimager and burnt an sd card. At this point I was
guessing that I would now see a smaller 2nd partition and an
unallocated area that I wouldn't get on these 4GB cards but would on
larger cards.

I ran partition wizard.

No change there either that I could see. 2nd partition was still most
of the drive and a good third was empty. No unallocated area.

I either don't understand this or I've done (not done) something
wrong.

Any ideas?

Cheers,

Bob.

Re: Limiting the capacity of SD cards for the pi

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 13:15:37 +0100
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 by: The Natural Philosop - Wed, 20 Sep 2023 12:15 UTC

On 20/09/2023 13:09, Bob Latham wrote:
> cd/media/usb-drive/

Thats your problem Lady.

cd /
THEN
umount

You cant unmount a drive you are sitting in

--
“Those who can make you believe absurdities, can make you commit
atrocities.”

― Voltaire, Questions sur les Miracles à M. Claparede, Professeur de
Théologie à Genève, par un Proposant: Ou Extrait de Diverses Lettres de
M. de Voltaire

Re: Limiting the capacity of SD cards for the pi

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Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
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 by: Bob Latham - Wed, 20 Sep 2023 12:46 UTC

In article <ueenp9$2u313$1@dont-email.me>,
The Natural Philosopher <tnp@invalid.invalid> wrote:
> On 20/09/2023 13:09, Bob Latham wrote:
> > cd/media/usb-drive/

> Thats your problem Lady.

> cd /
> THEN
> umount

> You cant unmount a drive you are sitting in

Are you saying that's why it doesn't seem to have done anything even
though I eventually typed
# cd
before umount. It then appeared to dismount to me?

Or are you just confirming my brain wobble was correct?

Bob.

Re: Limiting the capacity of SD cards for the pi

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From: use...@andyburns.uk (Andy Burns)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
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 by: Andy Burns - Wed, 20 Sep 2023 12:52 UTC

Bob Latham wrote:

> Not got a linux machine only PIs doing little jobs.

What is an rPi, other than a Linux machine?

Re: Limiting the capacity of SD cards for the pi

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 by: Andy Burns - Wed, 20 Sep 2023 12:54 UTC

Bob Latham wrote:

> Are you saying that's why it doesn't seem to have done anything even
> though I eventually typed # cd before umount. It then appeared to
> dismount to me?

typing "cd" by itself, takes you back to your home directory, so then
your shell didn't have the mounted usb disk open.

Re: Limiting the capacity of SD cards for the pi

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From: tauno.vo...@notused.fi.invalid (Tauno Voipio)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
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 by: Tauno Voipio - Wed, 20 Sep 2023 13:15 UTC

On 19.9.2023 13.16, Chris Elvidge wrote:
> On 19/09/2023 08:02, The Natural Philosopher wrote:
>> On 18/09/2023 20:54, druck wrote:
>>> On 18/09/2023 09:29, Ian wrote:
>>>> If you log in as "root", or get a root shell by calling "sudo bash",
>>>> things work as expected:
>>>
>>> sudo -i
>>>
>>> is quicker to type.
>>>
>>> ---druck
>>>
>> su - is even quicker
>>
>
> 'su -' needs a password entered (on my system(s))

So should all other methods to aquire superuser privileges.

There seems to be around RaspiOS setups with one user
permitted in the /etc/sudoers without password.

--

-TV

Re: Limiting the capacity of SD cards for the pi

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 14:21:47 +0100
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 by: Bob Latham - Wed, 20 Sep 2023 13:21 UTC

In article <kn08bjFsjp7U2@mid.individual.net>,
Andy Burns <usenet@andyburns.uk> wrote:
> Bob Latham wrote:

> > Are you saying that's why it doesn't seem to have done anything
> > even though I eventually typed # cd before umount. It then
> > appeared to dismount to me?

> typing "cd" by itself, takes you back to your home directory,

Yes, that was my thinking.

> so then your shell didn't have the mounted usb disk open.

For me that leads to other questions..

1. Was it the correct thing to do?

2. After that did I need to umount?

3. I understand that being 'on' or 'in' an external drive means you
cannot dismount it but was trying what stopped the process from
working?

Bob.

Re: Limiting the capacity of SD cards for the pi

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 14:41:13 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Wed, 20 Sep 2023 13:41 UTC

On 20/09/2023 13:46, Bob Latham wrote:
> In article <ueenp9$2u313$1@dont-email.me>,
> The Natural Philosopher <tnp@invalid.invalid> wrote:
>> On 20/09/2023 13:09, Bob Latham wrote:
>>> cd/media/usb-drive/
>
>> Thats your problem Lady.
>
>> cd /
>> THEN
>> umount
>
>> You cant unmount a drive you are sitting in
>
> Are you saying that's why it doesn't seem to have done anything even
> though I eventually typed
> # cd
> before umount. It then appeared to dismount to me?
>

That's right. If you are sitting on the mounted mount point, it cant get
off!
It will say 'busy'

> Or are you just confirming my brain wobble was correct?
>

Not sure which wobble that was...

> Bob.
>

--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly

Re: Limiting the capacity of SD cards for the pi

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 14:41:35 +0100
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 by: The Natural Philosop - Wed, 20 Sep 2023 13:41 UTC

On 20/09/2023 13:52, Andy Burns wrote:
> Bob Latham wrote:
>
>> Not got a linux machine only PIs doing little jobs.
>
> What is an rPi, other than a Linux machine?
>
A pi PICO?

--
“I know that most men, including those at ease with problems of the
greatest complexity, can seldom accept even the simplest and most
obvious truth if it be such as would oblige them to admit the falsity of
conclusions which they have delighted in explaining to colleagues, which
they have proudly taught to others, and which they have woven, thread by
thread, into the fabric of their lives.”

― Leo Tolstoy

Re: Limiting the capacity of SD cards for the pi

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 14:43:02 +0100
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 by: The Natural Philosop - Wed, 20 Sep 2023 13:43 UTC

On 20/09/2023 14:15, Tauno Voipio wrote:
> On 19.9.2023 13.16, Chris Elvidge wrote:
>> On 19/09/2023 08:02, The Natural Philosopher wrote:
>>> On 18/09/2023 20:54, druck wrote:
>>>> On 18/09/2023 09:29, Ian wrote:
>>>>> If you log in as "root", or get a root shell by calling "sudo bash",
>>>>> things work as expected:
>>>>
>>>> sudo -i
>>>>
>>>> is quicker to type.
>>>>
>>>> ---druck
>>>>
>>> su - is even quicker
>>>
>>
>> 'su -' needs a password entered (on my system(s))
>
>
> So should all other methods to aquire superuser privileges.
>
> There seems to be around RaspiOS setups with one user
> permitted in the /etc/sudoers without password.
>
Well, being linux, you have the choice. If you want to run the whole
shebang as root, you can!
--
“I know that most men, including those at ease with problems of the
greatest complexity, can seldom accept even the simplest and most
obvious truth if it be such as would oblige them to admit the falsity of
conclusions which they have delighted in explaining to colleagues, which
they have proudly taught to others, and which they have woven, thread by
thread, into the fabric of their lives.”

― Leo Tolstoy

Re: Limiting the capacity of SD cards for the pi

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From: ste...@eircom.net (Ahem A Rivet's Shot)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 15:40:56 +0100
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 by: Ahem A Rivet's - Wed, 20 Sep 2023 14:40 UTC

On Wed, 20 Sep 2023 16:15:44 +0300
Tauno Voipio <tauno.voipio@notused.fi.invalid> wrote:

> On 19.9.2023 13.16, Chris Elvidge wrote:

> > 'su -' needs a password entered (on my system(s))
>
>
> So should all other methods to aquire superuser privileges.

With sudo it depends entirely on what is in /etc/sudoers.

> There seems to be around RaspiOS setups with one user
> permitted in the /etc/sudoers without password.

This is possible sudoers supports a NOPASSWD keyword - this is
mostly useful for automation and laziness.

--
Steve O'Hara-Smith
Odds and Ends at http://www.sohara.org/
Host: Beautiful Theory meet Inconvenient Fact
Obit: Beautiful Theory died today of factual inconsistency

Re: Limiting the capacity of SD cards for the pi

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
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 by: Bob Latham - Wed, 20 Sep 2023 15:34 UTC

In article <kn0892Fsjp7U1@mid.individual.net>,
Andy Burns <usenet@andyburns.uk> wrote:
> Bob Latham wrote:

> > Not got a linux machine only PIs doing little jobs.

> What is an rPi, other than a Linux machine?

It could be a RISCOS machine, I've got one of those running on a PI4.
No linux in site. What I meant was, I don't have a desktop linux PC
only headless units.

Bob.

Re: Limiting the capacity of SD cards for the pi

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From: bob...@sick-of-spam.invalid (Bob Latham)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
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 by: Bob Latham - Wed, 20 Sep 2023 15:36 UTC

In article <ueespp$2v1m1$1@dont-email.me>,
The Natural Philosopher <tnp@invalid.invalid> wrote:

> That's right. If you are sitting on the mounted mount point, it
> cant get off! It will say 'busy'

Right but that's not the reason the whole thing did nothing *after* I
corrected that ????

Bob.

Re: Limiting the capacity of SD cards for the pi

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
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 by: The Natural Philosop - Wed, 20 Sep 2023 16:44 UTC

On 20/09/2023 16:36, Bob Latham wrote:
> In article <ueespp$2v1m1$1@dont-email.me>,
> The Natural Philosopher <tnp@invalid.invalid> wrote:
>
>
>> That's right. If you are sitting on the mounted mount point, it
>> cant get off! It will say 'busy'
>
> Right but that's not the reason the whole thing did nothing *after* I
> corrected that ????
>
> Bob.
>
I thought you said you unmounted it after that

--
Socialism is the philosophy of failure, the creed of ignorance and the
gospel of envy.

Its inherent virtue is the equal sharing of misery.

Winston Churchill

Re: Limiting the capacity of SD cards for the pi

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From: richard....@gmail.com (Richard Harnden)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 19:34:01 +0100
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 by: Richard Harnden - Wed, 20 Sep 2023 18:34 UTC

On 19/09/2023 12:07, The Natural Philosopher wrote:
> On 19/09/2023 11:16, Chris Elvidge wrote:
>> On 19/09/2023 08:02, The Natural Philosopher wrote:
>>> On 18/09/2023 20:54, druck wrote:
>>>> On 18/09/2023 09:29, Ian wrote:
>>>>> If you log in as "root", or get a root shell by calling "sudo bash",
>>>>> things work as expected:
>>>>
>>>> sudo -i
>>>>
>>>> is quicker to type.
>>>>
>>>> ---druck
>>>>
>>> su - is even quicker
>>>
>>
>> 'su -' needs a password entered (on my system(s))
>>
>>
> so does sudo...on mine
>

sudo wants /your/ password,
su wants /root's/ password.

You can set up sudo to not need a password.
You shouldn't need to know root's password.

Re: Limiting the capacity of SD cards for the pi

<ueffo9$32ned$1@dont-email.me>

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https://www.novabbs.com/computers/article-flat.php?id=7354&group=comp.sys.raspberry-pi#7354

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From: mar...@mydomain.invalid (Martin Gregorie)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Limiting the capacity of SD cards for the pi
Date: Wed, 20 Sep 2023 19:04:41 -0000 (UTC)
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 by: Martin Gregorie - Wed, 20 Sep 2023 19:04 UTC

On Wed, 20 Sep 2023 14:21:47 +0100, Bob Latham wrote:

> In article <kn08bjFsjp7U2@mid.individual.net>,
> Andy Burns <usenet@andyburns.uk> wrote:
>> Bob Latham wrote:
>
>> > Are you saying that's why it doesn't seem to have done anything even
>> > though I eventually typed # cd before umount. It then appeared to
>> > dismount to me?
>
>> typing "cd" by itself, takes you back to your home directory,
>
> Yes, that was my thinking.
>
>> so then your shell didn't have the mounted usb disk open.
>
> For me that leads to other questions..
> 1. Was it the correct thing to do?
>
> 2. After that did I need to umount?
>
> 3. I understand that being 'on' or 'in' an external drive means you
> cannot dismount it but was trying what stopped the process from working?
>
> Bob.

re point 2: if you want to see what storage is mounted, run 'df' to get a
list of all mounted partitions (file systems). This shows names of the
file systems, they size in 1K blocks, the space used and available in each
file system and the path to the fire system from '/'.

--

Martin | martin at
Gregorie | gregorie dot org

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