[gPXE] Only register bios drive without booting

[Andrey Kuzmin]

Somewhere lost Shao's email. Answering to his question - yes, I'm just
detaching  HDD  from PC and trying to boot the same PC. So hardware is
exactly the same.

I've also tried to:
1) Disable onboard NIC (I've discovered that it is enabled)
2) Install Intel Pro 1000 drivers (I've used windows)
3)  Install  sanbootconf,  but  installation  failed telling that MS iSCSI
initiator should be installed

The  same  result,  no activity after windows logo appears. Haven't tried to get debug
info as do not have another PC with COM port.

What  I've  tried  is  to  do the same operations with Vista x64 + SP2
(I've  tried  before  Win7  x64  RTM). Vista loads ok (but slowly, 3-4
minutes  till  the  progress  bar  and  1.5 minutes to load till login
screen, after this it works fast)

I've  also  tried  Andrey  Bobulsky's suggestion to play with BCD over
partially  installed  iSCSI  drive.  Moved  a bit forward, now getting
BOOT\BCD error, and windows repair see iSCSI drive only if another HDD
is  attached (the same as with Win7 setup). And repair works very long
and actually do not help. I'll continue to play with this tomorrow.



> It may be that your NIC is not marked as boot-start.  (I don't remember
> off-hand whether or not Win7 handles this automatically when you don't use an
> explicit install direct to iSCSI.)

> You may have some luck by installing sanbootconf before attaching the HDD to
> the iSCSI target server.  Even if it doesn't make it work, you will at least
> get some sensible debug messages you can view via windbg.