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1987-04-27
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BATES Associates - OPTIM.COM Fixed Disk Setup Utility
Tests conducted prior to the development of OPTIM indicate access speed
variations of up to 400% on incorrectly formatted fixed disk units! An
incorrect interleave setting does not prevent the machine from working, it
only slows down the sequential disk access time.
THIS MEANS THAT YOUR FIXED DISK COULD BE RUNNING AT ONLY A QUARTER OF IT'S
SPEED CAPABILITY!
OPTIM completes a low level format on the specified fixed disk unit. The
Interleave setting is timed for maximum efficiency before the format is
completed. On completion, a partition table is written to the disk which
allocates the whole disk for MSDOS use. This is the setting required by
most users, but it can be altered by the FDISK program if needed.
USAGE :-
From the DOS prompt (usually A:> or C:>) type in
OPTIM and hit <ENTER>.
An introduction screen will appear, giving details of program operation.
When you have read this, press any key, and you will be warned that data on
the selected drive will be erased by the program.
YOU MUST UNDERSTAND THAT THIS PROGRAM DOES NOT COMPLETE AN ORDINARY FORMAT
OPERATION. DATA IS COMPLETELY OVERWRITTEN AND CANNOT BE RECOVERED.
Once you have elected to continue, the parameters settings returned from
the disk controller will be displayed for you to verify. If there are two
fixed disks on your system, you will be asked to select one of them for
formatting. If the parameters displayed are incorrect, you should answer
'N' and you will be returned to the operating system. Up to this point
nothing has been changed on your fixed disk. If you accept the parameters
as correct, OPTIM will begin a test format on a small part of your disk to
determine which interleave setting is optimum. The results of each test
will be displayed as they are completed. When all 16 tests are done, OPTIM
will calculate the best setting and immediately begin to format THE WHOLE
DISK at that setting. This may take several minutes.
When the formatting process is complete, you will be asked to enter any bad
track information for the disk. Bad Tracks are areas of the disk which
cannot be relied upon to accurately maintain data storage. If there are
any bad tracks for your disk, they will be noted either on a label on the
disk itself, or in the accompanying documentation. If the details are on
the disk, they should be noted BEFORE you run OPTIM in order to avoid
moving the drive unit while it is running. Track numbers should be entered
as decimal numbers - these may require conversion from the hexadecimal
numbers that some manufacturers supply. As each track and head location is
specified, OPTIM will mark that track as bad so that the operating system
does not attempt to use it. DO NOT RELY UPON THE BAD TRACK SELECTION
CAPABILITIES OF THE NORMAL FORMAT PROGRAM. BAD TRACKS CAN PRODUCE
INTERMITTENT ERRORS WHICH AN ORDINARY FORMAT PROGRAM MAY NOT NOTICE.
When you have completed entering these details, OPTIM will write a
partition table to Track Zero/Head Zero which allocates the whole of the
disk for MSDOS use. This is done so that you don't need to use the FDISK
partitioning program. If you require special partitioning, you'll need to
use FDISK anyway and you should refer to your MSDOS manual for further
details. Once the partition table has been written, OPTIM will reboot the
machine to bring the newly set up disk on-line. Ensure that a system disk
is available in the floppy drive when rebooting takes place.
After the machine has restarted, you will need to format the fixed disk in
the usual way (see your MSDOS manual) and you may then transfer your data.
OPTIM has been tested on a number of different controller/drive/machine
combinations without any problems. It is only suitable for the 8 bit bus
controllers normally fitted to standard IBM PC type machines. OPTIM will
not work with the 16 bit bus controllers (large slot) used on the AT type
machines. A later version (OPTIMA) will shortly be available for these
models.
BATES Associates - Copyright (1987)