It is strange, I can mount and read DVD's without any problem, but ordinary data CD's (tried a lot of them) cannot be mounted ("No medium found" error). The drive is NEC DVD_RW ND-3540A, Linux: Fedora Core 4, kernel 2.6.14.

fstab line:

/dev/hda /media/cdrecorder iso9660 user,exec,noauto,owner,ro 0 0
(also tried "auto" instead of iso9660 fs type).

dmesg displays:

Probing IDE interface ide0...
hda: _NEC DVD_RW ND-3540A, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hda: ATAPI 48X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
....
....
cdrom: open failed.

The last line ("open failed") is added to the log each time I'm trying to mount CD.

The same error also appears when I'm trying to burn a blank CD (I use k3b+cdrecord2.1)

Is not right in either case, try something that makes a bit more sense, no reason for both user and owner;

Please read man mount for the details.

FYI: you might want to upgrade this OS, for example the latest kernel (using the src.rpm) for FC4 is;

kernel-2.6.17-1.2142_FC4.src.rpm 14-Jul-2006

Source: http://www.fedoralegacy.org/

Lenard:
Thanks, but these changes in fstab didn't help.
My dvd-drive is in fact on /dev/hda - it is not a mistake.

I'm planning to upgrade my OS, but CD's worked fine on the same system some time before. I have no idea what is happened - maybe hardware failure or something else. I'm very confused by the fact that DVD's are worked fine, but not CD's - AFAIK there is the same ISO filesystem, right?

I am sorry, I tested it on Windows XP on the same machine and there is the same troubles. So, it seems to be a hardware problem. But why it works with DVD???