Intel SERVER BOARD SDS2 - Manual (Page 133)

Errata Listing Intel® Server Board SDS2
Revision 1.2
Order Number: A85874-002
122
28. OB P100 NICs do not show at POST but attempt PXE boot and
appear in Boot Menu
Problem: On board NIC are not displayed during post but do appear in Boot Device menu.
These controllers will also attempt to do a PXE boot if no other bootable devices
are found
.
Implication: Not all boot devices displayed during POST when diagnostic display is enabled.
Workaround: None. This is by design. The system BIOS builds the on-board network
controller Option ROM with an option that always makes the OPROM “quiet”. It
therefore does not display any text messages and does not allowing the CTRL-
S option.
Status: Will not fix.
29. Dodson: Adaptec 39160 in slots 5 & 6 causes Expansion ROM
error
Problem: Add in Adaptec 39160 Ultra 160 controller installed in slots 5 & 6 causes an
Expansion ROM error after last system POST. No other adapters are present.
Implication: Error message: Expansion ROM not initialized - PCI Mass Storage controller in
slot 06. Bus: 02, Device: 09, Function: 01
Workaround: Adaptec's single image Option ROM requires one 'master' controlling channel
that is set using the <Ctrl-A> SCSI Select utility. Each channel loads the Option
ROM, determines whether it is the 'master' channel, and if not it unloads
completely. If it is the 'master', it proceeds to scan all devices and list all
possible drives. Only one channel does this scanning, but ALL channels load
the Option ROM initially if the Option ROM is enabled on the slot.
The error is coming from the second channel on the Adaptec 39160, even
though the first channel has already completed the 'master' scan. The reason it
is only happening in Slots 5 and 6 and when the NIC Option ROMs are all
loaded is because that is when the available Option ROM space is at a
minimum. The NIC Option ROM's are small, but apparently they make enough
difference. The onboard 7899 Option ROM loads after Slots 1-4, but before
Slots 5 & 6.
The solution here is to enable channel B of the ASC39160 as the 'master'
channel. When this is done, channel A loads the Option ROM, sees that it is not
the 'master', and unloads. Then channel B loads the Option ROM, does the full
scan of all devices, and remains in memory. At this point no other channels are
found, so no other devices error. The key here is that the LAST available
Adaptec channel should be listed as the Master - unfortunately, this is opposite
from their default - they default to the first available channel.