I have been trying to set up Win2k on a new A7V with an ATA100 connected disk and had various problems which I have overcome using info in the newsgroup. The final problem I can't get past (and can't find any postings for) is that, although the disk will boot fine when ATA66 connected, I get the error message 'Error loading operating system' when on ATA100. The error comes up before I even get up the loader menu. Any information I have found on the error suggests that it is produced by the MBR when it has found the active partition but can't start the operating system.
If I boot from floppy I can see the C (FAT) drive which has ntldr etc. with no problem.
I initially tried building Win2k (including service pack and Promise drivers) on ATA66 and then switching to ATA100 but got the error. I was then using bios 1004d and Ultra bios 2.01 (Build 28).
I then built again with the drive connected to the ATA100 and adding the Ultra 1.60 (build 33) drivers during the setup so that setup could see the disk. This was fine up to the point at which setup re-boots when I got the error. I connected the disk back to the ATA66 and finished the setup but then when I put it back on the ATA100 I got the error again.
I have tried using the command mode in Win2k recovery and have run fixmbr and fixboot and have copied ntldr from the setup CD.
I have upgraded the bios to 1005c and have even moved my PCI cards from slots 1&2 to 3&4.
Anybody got any suggestions? Is anybody using Ultra bios 2.01 (Build 28) successfully? (It's about the only thing I haven't changed)