[Christoph]

Hallo rußfuss,
habe einen AHA 2930U2 und im Manual steht folgendes bezüglich Boot-Device: hoffentlich hilft Dir das weiter.
Boot Device Options
Boot Target ID—Specifies the SCSI ID of your boot device.
Boot LUN Number—Specifies which LUN (Logical Unit Numbers) to boot from on your boot device. Multiple LUN Support must be enabled.

BIOS Multiple LUN Support—When set to Yes, the SCSI card
BIOS provides boot support for a SCSI peripheral with multiple
LUNs. Leave this setting set to No if your boot device does
not have multiple LUNs.
n Include in BIOS Scan—When set to Yes, the SCSI card BIOS
includes the peripheral as part of its BIOS scan at bootup.

BIOS Support for Bootable CD-ROMs—When set to
Enabled, the SCSI card BIOS allows booting from a CD-ROM
drive.

If both SCSI and non-SCSI (for example, IDE) disk drives are
installed, then the non-SCSI disk drive is typically the boot
drive. If your computer supports BBS (BIOS Boot Specification),
both SCSI and non-SCSI disk drives can coexist and you
can specify which drive to boot from. Refer to your computer
documentation for more information.