Drives With Mixed Partitions; Using Fdisk; Questions And Answers About Extended Translation; Stock Number: 510647-00, Rev. A Page - Adaptec AHA-2740W User Manual

AHA-2740W/2742W/2744W User's Guide

Drives With Mixed Partitions

Do not use extended translation on drives formatted with two or
more partitions for different operating systems. Use standard trans-
lation. The sum of the DOS partitions will be less than 1 GByte.
Partitions for UNIX and NetWare can be larger than 1 GByte when
using standard translation.
Note:
UNIX is understood to be AT&T
®
SCO v3.2.4 (or later) and ISC v3.0 (or later).

Using Fdisk

To install a new disk, or to repartition an existing disk, use the fdisk
DOS utility as you normally would. The cylinder size increases to 8
MBytes when you enable extended translation. The size of the parti-
tion you request must therefore be a multiple of 8 MBytes. If you
request a partition size that is not a multiple of 8 MBytes, fdisk will
round up to the nearest whole multiple of 8 MBytes.
Questions and Answers About Extended
Translation
What happens if I enable extended translation with SCSI drives that are less than
1 GByte in capacity?
Drives handled by the BIOS will use extended translation provided
they are over 1 GByte in formatted capacity. Drives with less than
1 GByte of formatted capacity will use standard translation regard-
less of whether extended translation is enabled.
What if I have more than two fixed disk drives on the host adapter?
You can use up to seven fixed disk drives under the BIOS provided
you are running DOS 5.0.
What if I use older versions of software drivers when extended translation is enabled?
To protect your data, the host adapter will lock out any driver that
does not identify itself as capable of extended translation. If you
need to use software that is not compatible with extended transla-
tion, do not enable extended translation.
D-4
A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
A A
AHA-2740W/2742W/2744W User's Guide
A A
A A Stock Number: 510647-00, Rev. A
A
A A Print Spec Number: 492897-00
A A

Current Date: 8/3/94

A A AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA
AAAA
®
/USL all versions,
ECN Date: 8/9/94
AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA
A
A A
A A
Page: D-4 A A
A
A A
A A
AAAA AAAA AAAA A A A A