EIDE/UDMA host adapter bootstrings

The wd driver supports the following bootstrings:

wd.noscan

disables hardware checking by the driver. This prevents conflicts on systems that have both SCSI and ATAPI hardware enabled.

wd.udma

allows boot-time configuration of Ultra DMA (UDMA) with the following settings:

off

disables UDMA

auto

if settings do not match motherboard, tries to sense and reprogram disk

0 or 16

udma 16 MB/sec

1 or 25

udma 25 MB/sec

2 or 33

udma 33 MB/sec

3 or 44

udma 44 MB/sec

4 or 66

udma 66 MB/sec

5 or 100

udma 100 MB/sec

6 or 133

udma 133 MB/sec