Re: debian cannot find cdrom

[Shyamal Prasad <shyamal.prasad@sbcglobal.net>]

    "Ben" == Ben Southwood <ben@ausipos.com> writes:

    Ben> I'm not sure if this is specific to laptops, but when
    Ben> installing debian woody 2.2.20 & bf2.4 after doing initial
    Ben> install of kernel debian cannot find my cdrom. it seems that
    Ben> the relevant modules are not being
    Ben> installed/configured/compiled.  The links from /cdrom
    Ben> /dev/cdrom to /dev/hdc are correct (i have read that this is
    Ben> often a problem)

    Ben> when I lsmod there are no modules that match cdrom or ide-cd.

    Ben> how do I go about installing the correct modules so that I
    Ben> can continue the installation?

Ben,

Both the 2.2.20 idepci kernel and bf24 build the IDE-CD support into
the kernel. You should not see any modules with lsmod. If that makes
you feel any better for bf24 the specific configuration is

CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_IDETAPE=m
CONFIG_BLK_DEV_IDEFLOPPY=y
CONFIG_BLK_DEV_IDESCSI=m


I can suggest a few things to try:

Look in the output of dmesg to see the CD ROM detection. Perhaps it is
on /dev/hdd instead? You should see something along the lines of

hda: ST360021A, ATA DISK drive
hdc: DVD-ROM DDU1621, ATAPI CD/DVD-ROM drive
hdd: QPS CRD-BP1600P, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14

but obviously it will be a little different for your system. If the
dmesg output does not recognize the CD drive it is possible that your
IDE (CDROM) is in a "non standard" location. This is true, for
example, on my Sony VAIO where I have to pass kernel parameters.

Then, what happens if you say "mount -t iso9660 /dev/cdrom /cdrom"
with a CD in the drive? Do this as root. If it does not work, replace
/dev/cdrom with /dev/hdc.

Finally, if you are doing this is a regular user, be sure that the
'user' option has been added to /etc/fstab. Something like this is
what I have:

/dev/cdrom      /cdrom          iso9660 defaults,ro,user,noauto 0 0

Tell us *exactly* what you do (the commands you type) and what the
result is. Please do not summarize it, cut and paste instead. 

Good luck,
Shyamal