I installed Knoppix 4.02 on and very old Gateway Solo 2500 Laptop. It has a 6 gb hdd, and 64mb of ram, but knoppix ran just fine. During the installation it took about 2 hours to get fo 0% to 77% and 15 hours to get from 77% to 100%. Now after GRUB loads I get this message

"Kernel panic - not syncing: VFS: Unable to mount root sf on unknown-block(3,1)"

Any help would be great. Thank you.