I have 2 pc, knoppix 3.8.1 and 3.7.
In the first, a SCSI workstation, I've performed sudo knopixx-installer and worked correctly.Very fine.
In the second, an older K6-3 400 128 MB, 6.8 GB HD with a fresh 2GB ntfs partition for WinNT and a 1GB FAT partition for data, I have created with no prolem a 3.3 GB reiserfs partition and swap with fdisk. But sudo knoppix-installer said me conditions for install knoppix wasn't satisfied. "Disk dev/hda doesn't contain a valid partition table".Both knoppix 3.8.1 and 3.7.
I have tried IGNORE_CHECK=1 sudo knoppix-installer, but the same problem: impossible to format partition.