[[email protected] ~]# mount
/dev/sda1 on / type ext3 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/sda8 on /backup type ext3 (rw)
none on /dev/shm type tmpfs (rw)
/dev/sda3 on /game type ext3 (rw)
/dev/sda6 on /mail type ext3 (rw)
/dev/sda5 on /sources type ext3 (rw)
/dev/sda2 on /web type ext3 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
If this is a colo server, then you'll probably be out of luck. If it's a server owned by the dc, then, managed or not, it's their responsibility to fix hardware issues like this.
This isn't a "hard drive" issue though, this looks to be a cdrom/dvd issue, which whould explain why it's not showing up when you look @ mounted partitions.
Most likely, it's trying to access the cdr/dvd because of something that it's been told to do, and it can't, so it's giving you the errors hoping you can fix it up.
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