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blaster999
l33t
Joined: 09 May 2004
Posts: 902
Location: Between keyboard and chair
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 Posted: Tue Oct 19, 2004 6:11 pm Post subject: USB stick - different devices? |
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Hello,
I can mount USB sticks - just start hotplug and mount. The problem is that sometimes the stick is represented by /dev/sda and sometimes - as /dev/sda1 - seems to depend on the stick. Can anyone confirm this or suggest some solution (e.g. what to put in fstab?). I would be grateful for any comment.
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 55461
Location: 56N 3W
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| Posted: Tue Oct 19, 2004 6:24 pm Post subject: |
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blaster999,
The stick is /dev/sda the filesystem it contains in the partition /dev/sda1.
It can contain more than one filesystem, since it has a partition table just like any other disk device.
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Computer users fall into two groups:-
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Naib
Watchman
Joined: 21 May 2004
Posts: 6090
Location: Removed by Neddy
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| Posted: Tue Oct 19, 2004 6:33 pm Post subject: Re: USB stick - different devices? |
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| blaster999 wrote: | Hello,
I can mount USB sticks - just start hotplug and mount. The problem is that sometimes the stick is represented by /dev/sda and sometimes - as /dev/sda1 - seems to depend on the stick. Can anyone confirm this or suggest some solution (e.g. what to put in fstab?). I would be grateful for any comment. |
The best bet is to move over to udev from devFS. The flaw with devFS was it could not tie devices easily to a certain /dev entry.
With udev you can write a rule that induvidually identifies a particular device (by its own manufacturer ID number). From this you can then make udev make its own symlnk named that you want.
eg
| Code: |
BUS="scsi", KERNEL="sd*", SYSFS(serial)="B8177840FE1CB499", NAME="%k", SYMLINK="usbkey"
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I have a USB stick and I via a udev prog got its serial number. Entered teh above into a rules file. Now everytime it is mounted it might be sda1 or sda2... BUT this device will always create a symlink called "usbkey"
my fstab now is:
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/dev/usbkey /mnt/usbstick vfat noauto,user 0 0
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blaster999
l33t
Joined: 09 May 2004
Posts: 902
Location: Between keyboard and chair
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| Posted: Tue Oct 19, 2004 6:43 pm Post subject: |
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First of all, thanks for your answers.
| NeddySeagoon wrote: | The stick is /dev/sda the filesystem it contains in the partition /dev/sda1.
It can contain more than one filesystem, since it has a partition table just like any other disk device. |
Well, when I insert some sticks, there is no sda1! Only sda (however, there IS a filesystem, which can be easily mounted and accessed by mounting sda). I've seen this using two usb sticks.
| Naib wrote: |
The best bet is to move over to udev from devFS. The flaw with devFS was it could not tie devices easily to a certain /dev entry.
With udev you can write a rule that induvidually identifies a particular device (by its own manufacturer ID number).
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I often use someone else's usb sticks (and I don't have mine), so the id is unpredictable.
_________________
60s: sex, drugs, rock'n'roll
90s: sux, bugs, drag'n'drop
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Some multimedia keys refuse to work? See my mini-howto:
https://forums.gentoo.org/viewtopic.php?p=1896734#1896734 |
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tuam
l33t
Joined: 04 May 2004
Posts: 765
Location: CGN, Germany
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| Posted: Tue Oct 19, 2004 9:56 pm Post subject: |
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| blaster999 wrote: |
Well, when I insert some sticks, there is no sda1! Only sda (however, there IS a filesystem, which can be easily mounted and accessed by mounting sda). I've seen this using two usb sticks.
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Yes, some models are like HDs with partitions, others are just "huge floppies".
FF,
Daniel |
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blaster999
l33t
Joined: 09 May 2004
Posts: 902
Location: Between keyboard and chair
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| Posted: Wed Oct 20, 2004 8:19 am Post subject: |
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| tuam wrote: | | Yes, some models are like HDs with partitions, others are just "huge floppies". |
Can something be done then to unify these two? Or I have to have several fstab entries?
One more question: are usb sticks supported by supermount?
And again, thanks for your replies.
_________________
60s: sex, drugs, rock'n'roll
90s: sux, bugs, drag'n'drop
---
Some multimedia keys refuse to work? See my mini-howto:
https://forums.gentoo.org/viewtopic.php?p=1896734#1896734 |
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