Known Problems and Limitations

• Because the NCR BIOS and the Solaris fdisk program may be incompatible, use the DOS version of FDISK (or equivalent utility) to create an entry in the FDISK partition table before installing the Solaris software. Create at least a 1-cylinder DOS partition starting at cylinder 0. If the DOS partition isn't created, the system won't reboot after Solaris installation.

• An add-in card with the 53C815, 53C820, 53C825, or 53C825A controller can only be used in a bus-mastering PCI slot. On motherboards with only two PCI slots, both of the PCI slots are usually bus-master capable. On motherboards with three or more PCI slots, and on motherboards with several embedded PCI controllers, some of the PCI slots may not be bus-master capable.

• Some PCI motherboards with the NCR SDMS BIOS and an embedded 53C810 or 53C810A controller do not work correctly with 53C82x add-in cards that also have an NCR SDMS BIOS. Upgrading the motherboard BIOS, the add-in card, or both may prevent these conflicts.

• On some early PCI systems with the 53C810 chip on the motherboard, the interrupt pin on the chip is not connected. Such a system cannot be used with Solaris software.

• Do not attempt to connect wide targets to the 53C810, 53C815, and 53C860 using a wide to narrow converter. These configurations are not supported.

• If your adapter supports the Symbios Logic SCSI Configuration utility, which can be accessed by pressing Control-C, do not alter the value of the Host SCSI ID (an option under the Adapter Setup menu) to anything but 7.

• If you experience problems with old target devices, add the following entry to the /kernel/drv/ncrs.conf file:

  targetN-scsi-options = 0x0;

  where N is the ID of the failing target.