Linux (knoppix, ubuntu 8.04) won't boot from CD on new system
New system: Asus P6t motherboard, win XP, Intel i7 965 CPU, 6 GB ram, XP Pro installed on 400 GB IDE, 100 GB IDE reserved for linux, 2 1-TB SATA drives (configured as IDE drives: not raid or AHCI) , 2 SATA CDROMs
No problems with XP at all but trying to boot Knoppix 3.8.1 from CD fails with kernel panic: not syncing: VFS: unable to mount root fs on unknown block(1,3). Also complains: Knoppix operating system not found. Tried failsafe, debug, nodma, noudev nofstab nomount noswap options with no change. My impression is that it can't find the ram drive where it tries to install the operating system.
Also, unbuntu 8.04 won't boot from live CD either and won't install (drops to minimal text command line). Probably the same issue but no more information is provided.
I was able to install fedora 9 on 100 GB drive (sda) but it won't boot (I changed boot order and boot loader shows both fedora and xp as options; xp does boot properly from boot loader menu). Maybe I used some partitioning option incorrectly but it did install with no problems on sda. The boot loader doesn't seem to find it during boot and numerous errors appear mentioning sda.
Note: 100 GB drive appears as the 0,0 drive when running partitioning software and was the boot drive from my last system while the 400 GB drive appears as the 0,1 drive. 100 GB drive was completely reformated and partitioned before use.
Never seen this before. Previous system had no problems with any linux distros. Help!