cdrom access (in terminal)

DonLuis · 03-12-2003, 01:16 AM

Back to Slack (v 8.1.01) after 5 years and can't access either cdrom (/dev/hdc or scd0) as root from the command line (terminal mode).

In Mandrake 9 and Red Hat 8.0 < cd /mnt/cdrom > does the trick.

Again, logged in as root, I've tried all variations of the above < cd /mnt/cdrom > and gotten nowhere, not even close.

What am missing and/or overlooking?

micxz · 03-12-2003, 01:34 AM

Are you sure it's mounted? look in /etc/fstab

nakkaya · 03-12-2003, 01:06 PM

mount /dev/cdrom

then cd /mnt/cdrom

Tinkster · 03-12-2003, 01:45 PM

spoiled by supermount ;)

Cheers,
Tink

Aussie · 03-12-2003, 11:25 PM

This is what dmesg | grep scsi returns on my system,

Code:

bern@grendel bern$ dmesg | grep scsi
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
Attached scsi CD-ROM sr1 at scsi0, channel 0, id 1, lun 0
sr0: scsi3-mmc drive: 40x/40x cd/rw xa/form2 cdda tray
sr1: scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray

So look for /dev/sr? and link it to /dev/cdrom, also check your fstab options.

DonLuis · 03-13-2003, 12:28 AM

Have redone fstab and linked hdc and sr0 (removed scd0).

Either I'm hosed up or something, there is no "cdrom(s)" sub directory listed in /dev (like Mandrake). Question: isn't /dev where I should find the cdrom in Slack?

Also, after vi editing and saving <:wq> mtab data, it disappears and reverts to previous data after re-booting?

And yes, I miss MD's supermount, not fun flying up one's arse in an endless loop.

dmesg shows sr0 attached, hdc is recognized but don't see it attached, yet I can mount it, but not access it.

Aussie · 03-13-2003, 12:38 AM

Post your lilo.conf and fstab.
Also what IDE devices do you have and what channel are they connected to?

DonLuis · 03-13-2003, 10:43 PM

Reinstalled Slack and started fresh, I'd made too many patches (fstab) with pieces from MD, RH & Debian and the baseline was lost.

Cdrom2 sr0 had to be added and linked, cdrom edited, and linked floppy too while at it.

Question remains, WHY (edited) changes to mtab revert to the original state after rebootomg? Googled and couldn't find anything definitive.

Appreciate all the responses and suggestions. Nice to get my head out and see the light of day again.

Yes, Mandrake and RedHat will dull your knife

Thanks.

Aussie · 03-13-2003, 11:03 PM

Because mtab is a dynamic file listing what's currently mounted.

rickenbacherus · 03-18-2003, 10:42 AM

DonLuis - Is there any chance I could get you to post your working fstab? It would be of great help to me. My symlinks are wrong. I'm close but not quite there. Thanks!

DonLuis · 03-18-2003, 01:09 PM

/dev/hda6 swap swap defaults 0 0
/dev/hda5 / reiserfs defaults 1 1
/dev/hda7 /usr/local reiserfs defaults 1 2
/dev/hda1 /fat32w98 vfat defaults 1 0
/dev/cdrom /mnt/cdrom iso9660 noauto,user,ro 0 0
/dev/cdrom2 /mnt/cdrom2 iso9660 noauto,user.rw 0 0
/dev/fd0 /mnt/floppy auto noauto,user 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults

be sure to link: ln -s /dev/hdc /dev/cdrom
ln -s /dev/sr0 (or scd0) /dev/cdrom2

Check < dmesg > to determine the hd_ and/or sc_0 / sr0 device numbers. I had to add my cdrw cdromw/sr0 to the fstab.

Also, visit < www.slackware.com/book > chapter 9 (all six sections) mounting devices covers fstab (mine is a little different as I'm running as root w/o users (not recommended).

HTH

rickenbacherus · 03-18-2003, 02:10 PM

Hey thanks - I'm actually running Debian- I just needed a reference and your setup sounded very similar to mine. It is only BOTH my DVD & cdr are under scsi emulation. Turns out it was a stupid symlink error (we shot the guy who did it). Thanks - I really appreciate it. All good to go.