General :: Ubuntu 6.06: Mounting /root/sda1 /root Failed: No Such Device

An old machine in our office, running Ubuntu 6.06 all of a sudden will not boot up. I get the following info during boot:

Uncompressing Linux... Ok Booting the kernel
mount: Mounting /root/sda1 /root failed: No such device
mount: Mounting /root/dev on /dev/.static/dev failed: No such file or directory

[code]....

I haven't changed anything on the system as far as I'm aware, and I ran some HD diagnostics and everything seems fine. however when I try to mount the drive with the following command:

sudo mount -t ext3 -o rw /dev/hda1 /mnt

I get the following error:

mount: wrong fs type, bad option, bad
superblock on /dev/sda1, missing code
page or helper program, or other error
In some cases useful info is found in
syslog - try dmesg | tail or so

I ran fdisk -l and it says the partition type is Linux. The output after running dmesg | tail :

[12207.483801] init_special_inode: bogus i_mode (101)
[12207.483809] EXT2-fs: corrupt root inode, run e2fsck
[12260.427078] init_special_inode: bogus i_mode (101)

[code]...

Update: After running e2fsck -p /dev/sda1, I get the following info:

/dev/sda1: clean, 142449 / 9584640 files, 5402711 / 19161520 blocks