On Mon, Mar 5, 2012 at 4:18 AM, Kevin O'Connor email@example.com wrote:
On Thu, Mar 01, 2012 at 05:39:25PM +0900, Daniel Castro wrote:
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).