- Please look initially under Recommended hardware settings check if your device is connected correctly.
- Please use SCSI cabling error to check if you cabling/termination is correct.
- At the moment devices are not recognized if SCSI connected to ID 7 or higher. Please allocate the device an SCSI ID of less than 7.
- Numerous SCSI devices need a RESET signal at the start, e.g. the TEAC drives. For this reason for the SCSI hostadapter the following option must be set in the BIOS:
Advanced Configuration Option -> Reset SCSI-Bus at IC Initialization
- There are SCSI hostadapters for which in the case of a warmstart the RESET signal is created too briefly, e.g. Tekram and Symbios SCSI hostadapters; so that some CD-ROM drives are not recognized. e.g.: TEAC 51SK. Here the only solution is to exchange the drive or the SCSI hostadapter.
- The option parity always has to be enabled (on all devices and on the SCSI card)
- One case is known in which the drive was not recognized because a SCSI scanner was installed and the SCSI harddisk was not set as ID 0 or ID 1.
Please SCSI Set the ID of the harddisk to ID 0 or ID 1.
- If you are using a mainboard which has an Onboard-SCSI has a controller, then for certain cards (PCI/AGP) you should make sure that they do not have the same IRQ allocated as the onboard-SCSI controller, as many cards are not capable of sharing IRQs, e.g. graphics cards with the Riva TNT chip set.
- Please check that the termination is correct, i.e. all ends and no other device in between, that there is no T-cabling and that each device has its own ID allocated to it.
- If a SCSI I/II device is connected to a Wide Controller, than this has to be explicitly explained to the BIOS:
Example: For the AHA2940/UW-BIOS you can set the option of not-wide-devices being recongnized as well. This is done using SCSISelect
in item Additional Options
by setting the option Initiate Wide Negotiation
of the affected SCSI-device to no
.
- If you are using an daptec AHA2940AU hostadapter, then you should at least update to the BIOS version 1.32
- If you are using an external SCSI device, then you should make sure that the cabling is high quality. On this see SCSI cabling error.