How could I find my device name?

forrest · 09-11-2001, 03:09 AM

I want to mount my cdrom in RH7 but I forget the device name, how should I do? is there any command to find the device name I used?

acid_kewpie · 09-11-2001, 03:32 AM

it should be listed in /etc/fstab. I'm not aware of any concrete way to find out which devices there are available, but assuming it's an IDE device it will be /dev/hdX x={a/b/c/d}. probably c in a standard MoBo configuration. Most device names such as /dev/cdrom are usually ( i think ) just soft links to the hdX device anyway. I'm not sure why my IDE cdrw is listed as a sd (scsi) device tho...

forrest · 09-11-2001, 04:57 AM

Another guy told me that use dmesg|grep cdrom, because my computer out of works now, I can not view the help system,I am not sure if it works.
if it does work, pls let me know

DMR · 09-11-2001, 05:43 AM

Acid_kewpie is right; the cdrom entry in /dev is just a symlink to the actual device. Just do

Code:

ls -l /dev/cdrom

The output will tell you, among other things, what device the link points to (hdc on my box). That information is only true if you haven't physically moved devices around on your IDE channels, of course. CD-ROM drives follow the same device-labelling convention as IDE hard drives: primary master= hda, primary slave= hdb, etc. I think IDE CD burners are different because they work under SCSI emulation in Linux (hence the "ide-scsi" entry in /etc/lilo.conf).

jharris · 09-11-2001, 08:02 AM

A bit off topic but...

I tend to have a line in /etc/fstab that contains the the noauto option so its doesn't attempt to mount at boot time, however associates /dev/hdd with /cdrom (or /mnt/cdrom or wherever takes your fancy), this way I can just issue mount /cdrom to mount the correct device to the correct directory... saves a bit of typing.

cheers

Jamie...