Can't Mount Optical Drive

[Jason Dusek]

Hi,

I'm on a Dell Latitude D600 with a CD-RW/DVD-R. When I try to mount the 
drive I get an error:

  5 # mount /dev/acd0 /cdrom
  mount: /dev/acd0: Input/output error

But dmesg says:

  acd0: CDRW <QSI CD-RW/DVD-ROM SBW242U> at ata1-master PIO4

So although my drive is recognized correctly, it doesn't work with 
FreeBSD. But it worked for building and installing FreeBSD a few days 
ago, so I know the drive is functional. How do I get the drive to mount? 
Does it make any difference that I am running GNOME 2.6?


I have some another disk mounting question, too. Sometimes when I try to 
mount the CD drive I get an error that goes something like:

  Incorrect super block

What does this error mean? What does it mean in reference to a hard 
drive? What does it mean in reference to a CD drive?

- Jason