I have a usb memory stick which I successfully used for a netinst
several months ago. When I connected it today it was recognized as sg1
but it was not recognized as a block device when I tried to mount it.
Returning to the Debian-Installer directions I found I can mount it
with the command mount /dev/sda /mnt but only as root. At the moment I
just want to store some files and there is plenty of space free so I
don't really have a problem. I'm just puzzled as I have an entry in
/etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
and I believe in the past the memory stick was recognized as sda1 and I
could mount it as an ordinary user. If using it for netinst has
modified it how can I restore the original configuration?

Tom


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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 01/25/08 15:05, Thomas H. George wrote:
> I have a usb memory stick which I successfully used for a netinst
> several months ago. When I connected it today it was recognized as sg1
> but it was not recognized as a block device when I tried to mount it.
> Returning to the Debian-Installer directions I found I can mount it
> with the command mount /dev/sda /mnt but only as root. At the moment I
> just want to store some files and there is plenty of space free so I
> don't really have a problem. I'm just puzzled as I have an entry in
> /etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
> and I believe in the past the memory stick was recognized as sda1 and I
> could mount it as an ordinary user. If using it for netinst has
> modified it how can I restore the original configuration?

To install Debian onto the machine that now recognizes it as sg1?

- --
Ron Johnson, Jr.
Jefferson LA USA

"I'm not a vegetarian because I love animals, I'm a vegetarian
because I hate vegetables!"
unknown
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On Fri, Jan 25, 2008 at 03:15:47PM -0600, Ron Johnson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 01/25/08 15:05, Thomas H. George wrote:
> > I have a usb memory stick which I successfully used for a netinst
> > several months ago. When I connected it today it was recognized as sg1
> > but it was not recognized as a block device when I tried to mount it.
> > Returning to the Debian-Installer directions I found I can mount it
> > with the command mount /dev/sda /mnt but only as root. At the moment I
> > just want to store some files and there is plenty of space free so I
> > don't really have a problem. I'm just puzzled as I have an entry in
> > /etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
> > and I believe in the past the memory stick was recognized as sda1 and I
> > could mount it as an ordinary user. If using it for netinst has
> > modified it how can I restore the original configuration?
>
> To install Debian onto the machine that now recognizes it as sg1?
>
No, just to use it to store data. As it is I can only mount it as root
and to just store data I would prefer to mount it as a normal user.
> - --
> Ron Johnson, Jr.
> Jefferson LA USA
>
> "I'm not a vegetarian because I love animals, I'm a vegetarian
> because I hate vegetables!"
> unknown
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>
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On Fri, Jan 25, 2008 at 04:05:38PM -0500, Thomas H. George wrote:
> I have a usb memory stick which I successfully used for a netinst several
> months ago. When I connected it today it was recognized as sg1 but it was
> not recognized as a block device when I tried to mount it.

well, if the kernel/udev recignized it as /dev/sg1 then your command
below won't work because that command tries to mount /dev/sda.

> Returning to the Debian-Installer directions I found I can mount it with
> the command mount /dev/sda /mnt but only as root. At the moment I just
--------------------^^^^^^^^

that won't work with a /dev/sdg*

try

mount /dev/sdg1 /mnt

> want to store some files and there is plenty of space free so I don't
> really have a problem. I'm just puzzled as I have an entry in /etc/fstab
> /dev/sda1 /usbkey vfat rw,user,noauto 0 0

that also tries to mount /dev/sda1. With your memory stick id'ed as
/dev/sdg1, it won't work.

> and I believe in
> the past the memory stick was recognized as sda1 and I could mount it as an
> ordinary user.

the 'user' option in the fstab line above allows the user to mount the
device. But again, it needs to specify the right device...


> If using it for netinst has modified it how can I restore
> the original configuration?

all the netinst has done is but some files on it, essentially. That
doesn't affect how the stick is recognized by the kernel or
udev. SOmething else is causing the change to sdg. If you want to
revert the stick to it's original, pre-netinst condition, probably you
need to just reformat the filesystem.

A

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On 01/26/08 08:43, Thomas H. George wrote:
> On Fri, Jan 25, 2008 at 03:15:47PM -0600, Ron Johnson wrote:
>> On 01/25/08 15:05, Thomas H. George wrote:
>>> I have a usb memory stick which I successfully used for a netinst
>>> several months ago. When I connected it today it was recognized as sg1
>>> but it was not recognized as a block device when I tried to mount it.
>>> Returning to the Debian-Installer directions I found I can mount it
>>> with the command mount /dev/sda /mnt but only as root. At the moment I
>>> just want to store some files and there is plenty of space free so I
>>> don't really have a problem. I'm just puzzled as I have an entry in
>>> /etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
>>> and I believe in the past the memory stick was recognized as sda1 and I
>>> could mount it as an ordinary user. If using it for netinst has
>>> modified it how can I restore the original configuration?
>>
>> To install Debian onto the machine that now recognizes it as sg1?
>>
> No, just to use it to store data. As it is I can only mount it as root
> and to just store data I would prefer to mount it as a normal user.
>

What I mean is:
The first sentence of your original mail indicates that *this*
exact stick was used to install Debian on *this* exact machine.

Is that what you meant to say?

- --
Ron Johnson, Jr.
Jefferson LA USA

"I'm not a vegetarian because I love animals, I'm a vegetarian
because I hate vegetables!"
unknown
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Thomas H. George:
>
> No, just to use it to store data. As it is I can only mount it as root
> and to just store data I would prefer to mount it as a normal user.

I still don't understand your problem, but what a user is able to mount
is determined by the contents of /etc/fstab.

If you want ordinary users to be able to mount a specific filesystem,
just add the "user" option:

$ grep user /etc/fstab
/dev/iriver1 /media/iriver vfat noauto,user,noatime 0 0
/dev/stick1 /media/stick vfat noauto,user,noatime,async,utf8=true 0 0
/dev/sda1 /media/usbdisk auto noauto,user,noatime,async 0 0
/dev/hdc /media/cdrom0 udf,iso9660 user,noauto,ro 0 0

J.
--
I frequently find myself at the top of the stairs with absolutely
nothing happening in my brain.
[Agree] [Disagree]
<http://www.slowlydownward.com/NODATA/data_enter2.html>

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On Sat, Jan 26, 2008 at 06:51:47AM -0800, Andrew Sackville-West wrote:

> all the netinst has done is but some files on it, essentially. That
> doesn't affect how the stick is recognized by the kernel or
> udev. SOmething else is causing the change to sdg. If you want to
> revert the stick to it's original, pre-netinst condition, probably you
> need to just reformat the filesystem.

And while you're at it, add a label to the filesystem, then mount with
LABEL= instead of /dev/xxxx.

Doug.


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On Sat, Jan 26, 2008 at 09:07:57AM -0600, Ron Johnson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 01/26/08 08:43, Thomas H. George wrote:
> > On Fri, Jan 25, 2008 at 03:15:47PM -0600, Ron Johnson wrote:
> >> On 01/25/08 15:05, Thomas H. George wrote:
> >>> I have a usb memory stick which I successfully used for a netinst
> >>> several months ago. When I connected it today it was recognized as sg1
> >>> but it was not recognized as a block device when I tried to mount it.
> >>> Returning to the Debian-Installer directions I found I can mount it
> >>> with the command mount /dev/sda /mnt but only as root. At the moment I
> >>> just want to store some files and there is plenty of space free so I
> >>> don't really have a problem. I'm just puzzled as I have an entry in
> >>> /etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
> >>> and I believe in the past the memory stick was recognized as sda1 and I
> >>> could mount it as an ordinary user. If using it for netinst has
> >>> modified it how can I restore the original configuration?
> >>
> >> To install Debian onto the machine that now recognizes it as sg1?
> >>
> > No, just to use it to store data. As it is I can only mount it as root
> > and to just store data I would prefer to mount it as a normal user.
> >
>
> What I mean is:
> The first sentence of your original mail indicates that *this*
> exact stick was used to install Debian on *this* exact machine.
>
> Is that what you meant to say?
>
No, this stick was prepared for netinst on this machine but used to
install debian on another machine. Does this make a difference?
> - --
> Ron Johnson, Jr.
> Jefferson LA USA
>
> "I'm not a vegetarian because I love animals, I'm a vegetarian
> because I hate vegetables!"
> unknown
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>
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On Sat, Jan 26, 2008 at 04:57:58PM +0100, Jochen Schulz wrote:
> Thomas H. George:
> >
> > No, just to use it to store data. As it is I can only mount it as root
> > and to just store data I would prefer to mount it as a normal user.
>
> I still don't understand your problem, but what a user is able to mount
> is determined by the contents of /etc/fstab.
>
> If you want ordinary users to be able to mount a specific filesystem,
> just add the "user" option:
>
> $ grep user /etc/fstab
> /dev/iriver1 /media/iriver vfat noauto,user,noatime 0 0
> /dev/stick1 /media/stick vfat noauto,user,noatime,async,utf8=true 0 0
> /dev/sda1 /media/usbdisk auto noauto,user,noatime,async 0 0
> /dev/hdc /media/cdrom0 udf,iso9660 user,noauto,ro 0 0
>
> J.

I had a line:

/dev/sg1 /usbdrive vfat rw,user,noauto 0 0

in /etc/fstab but when I tried to mount /usbdrive the system responded,
"This is not a block device". It was after this that I found that as
root I could mount the memory stick with mount /dev/sda /mnt. - Tom
> --
> I frequently find myself at the top of the stairs with absolutely
> nothing happening in my brain.
> [Agree] [Disagree]
> <http://www.slowlydownward.com/NODATA/data_enter2.html>



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-----BEGIN PGP SIGNED MESSAGE-----
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On 01/27/08 08:14, Thomas H. George wrote:
>> On Sat, Jan 26, 2008 at 09:07:57AM -0600, Ron Johnson wrote:
>>> On 01/26/08 08:43, Thomas H. George wrote:
>>>> On Fri, Jan 25, 2008 at 03:15:47PM -0600, Ron Johnson wrote:
>>>>> On 01/25/08 15:05, Thomas H. George wrote:
>>>>>> I have a usb memory stick which I successfully used for a netinst
>>>>>> several months ago. When I connected it today it was recognized as sg1
>>>>>> but it was not recognized as a block device when I tried to mount it.
>>>>>> Returning to the Debian-Installer directions I found I can mount it
>>>>>> with the command mount /dev/sda /mnt but only as root. At the moment I
>>>>>> just want to store some files and there is plenty of space free so I
>>>>>> don't really have a problem. I'm just puzzled as I have an entry in
>>>>>> /etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
>>>>>> and I believe in the past the memory stick was recognized as sda1 and I
>>>>>> could mount it as an ordinary user. If using it for netinst has
>>>>>> modified it how can I restore the original configuration?
>>>>> To install Debian onto the machine that now recognizes it as sg1?
>>>>>
>>>> No, just to use it to store data. As it is I can only mount it as root
>>>> and to just store data I would prefer to mount it as a normal user.
>>>>
>>> What I mean is:
>>> The first sentence of your original mail indicates that *this*
>>> exact stick was used to install Debian on *this* exact machine.
>>>
>>> Is that what you meant to say?
>
>> No, this stick was prepared for netinst on this machine but used to
>> install debian on another machine. Does this make a difference?

Hmmm. It shouldn't. Grep /etc/udev/rules.d for "sg". Maybe that
will provide a clue.

- --
Ron Johnson, Jr.
Jefferson LA USA

"I'm not a vegetarian because I love animals, I'm a vegetarian
because I hate vegetables!"
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On Jan 27, 2008 10:22 PM, Thomas H. George <lists@tomgeorge.info> wrote:
> in /etc/fstab but when I tried to mount /usbdrive the system responded,
> "This is not a block device". It was after this that I found that as
> root I could mount the memory stick with mount /dev/sda /mnt. - Tom

Hi, then try modifying you /etc/fstab to point to /dev/sda and not
/dev/sda1. Looking from your post, you can mount /dev/sda and not
/dev/sda1, your fstab on the other hand only gives normal permission
to mount /dev/sda and not /dev/sda1.

It's a little bit puzzling why there is no number, it might be because
you meant you mounted /dev/sda1, in which case I'm totally wrong and
you can ignore this post entirely. ):

Chris


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El vie, 25-01-2008 a las 16:05 -0500, Thomas H. George escribió:
> I have a usb memory stick which I successfully used for a netinst
> several months ago. When I connected it today it was recognized as sg1
> but it was not recognized as a block device when I tried to mount it.
> Returning to the Debian-Installer directions I found I can mount it
> with the command mount /dev/sda /mnt but only as root. At the moment I
> just want to store some files and there is plenty of space free so I
> don't really have a problem. I'm just puzzled as I have an entry in
> /etc/fstab reading /dev/sda1 /usbkey vfat rw,user,noauto 0 0
> and I believe in the past the memory stick was recognized as sda1 and I
> could mount it as an ordinary user. If using it for netinst has
> modified it how can I restore the original configuration?
>

If you want it to be sda1 instead of sda, try making a partition on it.

OTOH, if you want it to be sda1 because you don't want to modify your
fstab, you could try using pmount instead of mount. 'aptitude show
pmount'.

Checkout udev if you want it to have the same name each time you connect
it, you can name it whatever you want.


--
Gabriel Parrondo
GNU/Linux User #404138
GnuPG Public Key ID: BED7BF43
JID: gabrielp@xmpp.us

"The only difference between theory and practice is that, in theory, there's no difference between theory and practice."

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After trying various suggestions I found I was unable to mount the
memory stick at all.

I went back to the begining and executed:

zcat boot.img.gz > /dev/sda

which puts a FAT file system on the memory stick.

Next I unplugged and replugged it and it was still recognized as sg1.
As root the command mount /dev/sda /mnt worked.

Next I added the line:

/dev/sda /media/usb1 vfat rw,user,auto 0 0

to /etc/fstab and found that as a normal user the command:

mount /media/usb1

worked. Thus my objective of using the memory stick as a normal user is
achieved.

I don't understand why sg1 and not sda1. For the curious I ran parted
with the following result:


Script started on Sun 27 Jan 2008 04:41:31 PM EST
Dragon:~# parted /dev/sda print



Disk /dev/sda: 2080MB

Sector size (logical/physical): 512B/512B

Partition Table: loop



Number Start End Size File system Flags

1 0.00kB 2080MB 2080MB fat16





Information: Don't forget to update /etc/fstab, if necessary.



Dragon:~# exit


Script done on Sun 27 Jan 2008 04:41:56 PM EST

Tom


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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 01/27/08 15:45, Thomas H. George wrote:
> After trying various suggestions I found I was unable to mount the
> memory stick at all.
>
> I went back to the begining and executed:
>
> zcat boot.img.gz > /dev/sda
>
> which puts a FAT file system on the memory stick.
>
> Next I unplugged and replugged it and it was still recognized as sg1.
> As root the command mount /dev/sda /mnt worked.
>
> Next I added the line:
>
> /dev/sda /media/usb1 vfat rw,user,auto 0 0
>
> to /etc/fstab and found that as a normal user the command:
>
> mount /media/usb1
>
> worked. Thus my objective of using the memory stick as a normal user is
> achieved.
>
> I don't understand why sg1 and not sda1. For the curious I ran parted
> with the following result:
>
>
> Script started on Sun 27 Jan 2008 04:41:31 PM EST
> Dragon:~# parted /dev/sda print
>
> Disk /dev/sda: 2080MB
>
> Sector size (logical/physical): 512B/512B
>
> Partition Table: loop
>
> Number Start End Size File system Flags
>
> 1 0.00kB 2080MB 2080MB fat16
>
>
> Information: Don't forget to update /etc/fstab, if necessary.

If this is a desktop system running GNOME/KDE/XFCE when you plug the
stick in, you shouldn't really have to do any of this. Since you
*are* having all this trouble, I guess that implies that you aren't
running a DE.

- --
Ron Johnson, Jr.
Jefferson LA USA

"I'm not a vegetarian because I love animals, I'm a vegetarian
because I hate vegetables!"
unknown
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Chris Henry:
>
> It's a little bit puzzling why there is no number, it might be because
> you meant you mounted /dev/sda1, in which case I'm totally wrong and
> you can ignore this post entirely. ):

It is possible to create a filesystem on the plain device without any
partition table. In that case, mounting /dev/sda should work.

J.
--
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nothing happening in my brain.
[Agree] [Disagree]
<http://www.slowlydownward.com/NODATA/data_enter2.html>

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