Root hard disk bootstrings
The hd bootstring overrides the default search
sequence used by the hd driver to determine
the root disk. The syntax of the bootstring is:
where driver is the disk driver prefix.
Valid driver prefixes are:
This bootstring is required by those controllers (such as
some Compaq IDA and some SCSI host adapters)
that appear to be WD1010-style controllers. By default,
hd recognizes the wd driver before
the Sdsk or ida drivers.
This prevents these disks from being configured as the
ESDI disk controller on MCA machines
Compaq IDA controller
ST506 disk controller on MCA machines
generic SCSI disk driver for all machine architectures
generic Western Digital WD1010 disk driver for
controllers such as ESDI and IDE
that present a ST506 interface on ISA
and EISA machines
To boot from a Compaq IDA drive,
you would use the bootstring hd=ida0.
You should add this bootstring to the definition of
DEFBOOTSTR in the file /etc/default/boot so
that the system uses the correct root disk configuration when it boots.
QIC-02 tape drive bootstrings
EIDE/UDMA host adapter bootstrings
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003