On Tue, Jun 05, 2018 at 12:51:54PM +0300, Nikolay Ivanets wrote: > Well, I've played with disk geometry and translation mode options for > attached disk to Qemu but it didn't help. > > Maximum I could do is to make correct VBR sector to load at boot > process setting secs=32,trans=large or secs=32,trans=none but then > bootstrap code from VBR fails with "Disk read error". It reads next N > sectors into a memory trying to find bootloader (NTLDR) and fails. I > also noticed Volume Boot Record (first partition sector) contains > "sectors per track" record at offset 0x18 (from beginning of > partition). > > Finally I've replace all entries of '63' to '32' in src/block.c. Now > number of sectors/track becomes 32 instead of hard-coded 63 in LBA > translation mode . Compiled BIOS and supplied to Qemu. Now Windows > boots successfully even without manually specifying of disk geometry. > > Definetely it is not a permanent fix. But might be considered as a > workaround for disks with 32 sectors/track. > > p.s. It seems HP servers have an option 32/63 sectors per track and 32 > is default choese. > > Did anyone face with 32/63 sectors per track problem? How did you > solve it, if any? > May be I miss something and Seabios developers can point me a right direction?
As far as I know, QEMU should be able to tell SeaBIOS the exact geometry to use (eg, via qemu -hdachs c,h,s[,t] option). If you're not getting the expected behavior, be sure to include the seabios log file - see: https://www.seabios.org/Debugging -Kevin _______________________________________________ SeaBIOS mailing list SeaBIOS@seabios.org https://mail.coreboot.org/mailman/listinfo/seabios
