On Mon, Mar 5, 2012 at 4:18 AM, Kevin O'Connor <[email protected]> wrote: > On Thu, Mar 01, 2012 at 05:39:25PM +0900, Daniel Castro wrote: >> Hello all, >> >> The xen pv drivers are almost done. >> >> When I start the booting process from hda seabios tries to read lba at >> 0 (sector 0) buffer (buf_fl) to 7c00 count 0 operation 0 (read) >> command 1 (unlisted) >> I do not understand count 0 and command 1. >> Should it be count 1, for the first sector on the drive and a command >> such as listed in drive.h? >> >> Is this normal? Am I missing something? Thanks for the response Kevin, I am debugging the operation on a xen drive. Right now the drive fron end is initialized correctly and connects to the back end, then boot proceeds. But on the first operation is am getting an command=1 and count=0.
And that seems awkward. I will take a look at boot_disk() to trace the call. > > I don't understand what you are reporting/asking. > > The code at boot.c:boot_disk() issues a legacy bios read (int 13 ah=2) > of the first sector (count=1). > > -Kevin Thanks, Daniel -- +-=====---------------------------+ | +---------------------------------+ | This space intentionally blank for notetaking. | | | Daniel Castro, | | | | Consultant/Programmer.| | | | U Andes | +-------------------------------------+ _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
