That BIOS is a mod based on Hargle's BIOS which doesn't support CHS addressing so that's probably why.The sector issue that you noticed seem to be a error from the bios I was using, the original oprom from the chuckg thread about modifing the xtide.
More odd looking stuff right there.Block mode : Set to 0 from max 1 sectors
PIO mode : Max 1, Min cycle times: 383 ns, with IORDY -1 ns
Hope this helps in some way, and thank you very very much for your hard work.
It does, and thank you for the kind words!