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AHA-3940U/3940UW/3940UWD User's Guide
Caution:
Be sure to back up your disk drive before you
change the translation method on a disk drive. All data is
erased when you change from one translation scheme to
another.
When Not to Use Extended Translation
NetWare and the newer versions of UNIX do not share the
1024 cylinder limit of DOS and do not require extended trans-
lation to support large disk drives.
Drives are sometimes formatted with two or more partitions
for different operating systems. Use standard translation when
the sum of the DOS partitions is 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 SCO v3.2.4 (or later), SCO
UnixWare all versions, and SCO Open Server.
Installing or Repartitioning Disks
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 par-
tition 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
rounds up to the nearest whole multiple of 8 MBytes.
Extended Translation With SCSI Drives Smaller
Than 1 Gbyte
Drives handled by the BIOS use extended translation if their format-
ted capacity is greater than 1 GByte. Drives smaller than 1 GByte of
formatted capacity use standard translation regardless of whether
extended translation is enabled.
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AHA-3940U/3940UW/3940UWD User's Guide
Stock Number: 511041-00, Rev. B
Print Spec Number: 494569-00
Current Date: 2/14/97
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Page: C-2
ECN Date: 2/17/97
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