Read and write into file system from SCO

hi

Knows someone what kind of file system uses SCO Unix 5.0.6?
Which linux or unix LIVE CD can read and write into file system from SCO Unix?
I've tried to boot SCO using Knoppix 6.2.1 LIVE CD, but cannot mount.

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

Go poke around in SCO's knowledge base. You'll find that the default filesystem type is HTFS.

Linux Online - Filesystems HOWTO: Other filesystems

The link to crosstor.com asks for a userid and password.
I did a search for crosstor.com, and found links to news articles that Crosstor was acquired by EMC in 2000.