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rajl
Apprentice
Joined: 25 Sep 2002
Posts: 287
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 Posted: Wed Mar 26, 2003 1:18 am Post subject: linux refuses to mount optical drives |
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For some reason, my computer refuses to mount my drives. I currently have a dvd/cdrw combo drive and a buslink 52/24/52 cd-recorder. both are set up to be scsi-emulated for cd-burning. My problem is that every time I try and mount the drives as a regular user, I get:
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bash-2.05b$ mount /dev/sg0 /mnt/dvd
mount: only root can do that
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even though I have the following in my /etc/fstab:
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/dev/sg0 /mnt/dvd autofs noauto,ro,users 0 0
/dev/sg1 /mnt/cdrom autofs noauto,ro,users 0 0
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so I then su into root, and try again, only to get:
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bash-2.05b# mount /dev/sg0 /mnt/dvd/
mount: /dev/sg0 is not a block device
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I'm now exasperated and at wit's end. Can someone please help me? I HATE not being able to read any CD's what so-ever.
_________________
-Rajl
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It's easy to be brave once you consider the alternatives. |
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puddpunk
l33t
Joined: 20 Jul 2002
Posts: 681
Location: New Zealand
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| Posted: Wed Mar 26, 2003 1:29 am Post subject: |
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add yourself to the cdrom or the cdrw group (can't quite remember) then edit your /etc/devfsd.conf and change it so it will set permission to your CD* drives so that anybody in the group can use them.
Hope I helped,
Chris. |
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rajl
Apprentice
Joined: 25 Sep 2002
Posts: 287
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| Posted: Wed Mar 26, 2003 1:47 am Post subject: |
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I added my regular users a long time ago to both the cdrom and cdrw groups. sg0 and sg1 are owned by root and in group root. the permissions on both devices are set to 555, which means they are readable and executable by everyone. Sg0 and sg1 are soft links for the full path for the scsi emulated paths.
I'd rather not edit /etc/devfsd.conf since I have no idea what I'm doing in there, though I did edit it per the instructions in the documentation for when I had the drives up on the regular atapi interface at one point.
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cyrillic
Watchman
Joined: 19 Feb 2003
Posts: 7313
Location: Groton, Massachusetts USA
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| Posted: Wed Mar 26, 2003 4:48 am Post subject: |
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The devices you want to mount are /dev/sr0 and /dev/sr1
The /dev/sg* devices are for raw scsi commands used by cdrecord |
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rajl
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Joined: 25 Sep 2002
Posts: 287
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| Posted: Wed Mar 26, 2003 6:08 am Post subject: |
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that would make sense about /dev/sg* but there are not /dev/sr0 or sr1 devices in the /dev directory. What should I do?
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-Rajl
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It's easy to be brave once you consider the alternatives. |
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cyrillic
Watchman
Joined: 19 Feb 2003
Posts: 7313
Location: Groton, Massachusetts USA
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| Posted: Wed Mar 26, 2003 6:14 am Post subject: |
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This should give you /dev/sr* devices :
| Code: | SCSI support --->
<*> SCSI CD-ROM support |
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rajl
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Joined: 25 Sep 2002
Posts: 287
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| Posted: Wed Mar 26, 2003 4:53 pm Post subject: |
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cool, I'm recompiling my kernel to add that in...I hope it works.
_________________
-Rajl
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rajl
Apprentice
Joined: 25 Sep 2002
Posts: 287
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| Posted: Thu Mar 27, 2003 4:25 am Post subject: |
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ok, so I recomplied my kernel to include scsi cd support, and can now mount my drives, but only as root. even though my fstab entries look like this:
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/dev/sr0 /mnt/dvd autofs noauto,ro,users 0 0
/dev/sr1 /mnt/cdrom autofs noauto,ro,users 0 0
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I am still unable to mount the drives as a regular user, even though I put "users" into my fstab file. What should I do now? Note that I've tried both user and users with the same result.
_________________
-Rajl
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rajl
Apprentice
Joined: 25 Sep 2002
Posts: 287
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| Posted: Thu Mar 27, 2003 10:54 pm Post subject: |
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Can anyone tell me why my optical drives won't be mounted by regular users. Root can do it, but I hate having to "su" everytime I want to mount a cd. I looked at my fstab file, and I can't figure out why they won't mount under regular users.
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-Rajl
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Kernel & Hardware
