User`s manual

3-6
SUPER P6DGS/P6DGE/P6DGU/P6SGU Manual
Question: Why can't I turn off the power using the momentary
power on/off switch?
Answer: The instant power off function is controlled by the BIOS. When
this feature is enabled in the BIOS, the motherboard will have instant off
capabilities as long as the BIOS has control of the system. When this
feature is disabled or when the BIOS is not in control, such as during
memory count (the first screen that appears when the system is turned on),
the momentary on/off switch must be held for more than four seconds to
shut down. This feature is required to implement the ACPI features on the
motherboard.
Question: I see some of my PCI devices sharing IRQs, but the
system seems to be fine. Is this correct or not?
Answer: Some PCI Bus Mastering devices can share IRQs without perfor-
mance penalties. These devices are designed to work correctly while shar-
ing IRQs.
Question: When I connect my Ultra2 LVD Hard Drive to the JA1 SCSI
connection, the drive was not recognized by BIOS or it failed to boot. Do
I need a special cable?
Answer: Yes, for Ultra2 LVD drives, you need a special 68-pin cable with active
termination at the end of the cable, since Ultra2 LVD hard drives do not have
termination on the drive.
Question: Why do I get the error message "Stop 0x0000007B Inacces-
sible Boot Device" during the Windows NT 4.0 Hardware Detection
portion of the Setup?
Answer: When you run Windows NT Setup, you may receive the following
error message during the hardware detection phase: STOP:0x0000007B
Inaccessible Boot Device. This can occur if your computer contains a
motherboard with an onboard Adaptec Dual-Channel Ultra Wide 7895 Small
Computer System Interface (SCSI) controller. This controller is not on the
Windows NT Hardware Compatibility List (HCL) and is therefore not
detected correctly by Windows NT Setup. To resolve this issue, follow
these steps:
1. Insert the Windows NT Setup disk 1 in drive A and then turn on or
restart the computer.