Basic hardware configuration

SCSI host adapter bootstrings

The adapter bootstring overrides the kernel's default configuration for a given host adapter. It has the following syntax:

adapter=driver(base, int, dma)

where:

driver: is the host adapter driver prefix
base: is the adapter I/O base address
int: is the adapter interrupt vector
dma: is the adapter DMA channel

A list of host adapter driver prefixes appears in /etc/default/scsihas.

If the kernel fails to recognize, or incorrectly identifies, your SCSI adapter at boot time, you can use the adapter bootstring to define it. For example, if you have an Adaptec 1522 board installed and the system fails to recognize it as configured, you would use a bootstring similar:

adapter=spad(0x340,11,0)

NOTE: Many EISA, MCA and PCI drivers get configuration data exclusively from CMOS RAM, ignoring bootstrings.