Acer Altos 500 Series User Manual page 98

Extended BIOS Translation for DOS Drives > 1 GByte
This option allows you to enable or disable extended translation for SCSI hard
disks with a capacity greater than 1 GByte. It is only valid if the SCSI controller
BIOS is enabled. The default setting is Enabled. Do not change this setting from
the default.
If this option is enabled, the following translation schemes are used:
SCSI hard disks < 1 GByte use a translation scheme of 64 heads, 32 sectors per
track
SCSI hard disks > 1 GByte use a translation scheme of 255 heads, 63 sectors per
track
Display <Ctrl-A> Message During BIOS Initialization
This option allows entering the SCSI Select utility during BIOS initialization. The
default setting is Enabled.
BIOS Support for Bootable CD-ROM
When this option is enabled, a bootable CD-ROM device may be used to directly
load an operating system. The default setting is Enabled.
BIOS Support for Int13 Extensions
This option allows access to attached SCSI devices through BIOS Int13 functions.
The default setting is Enabled.
Altos 500 Series User's Guide