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GEMini_Atari_CD-ROM_Walnut_Creek_December_1993.iso
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ATFLAS.DOC
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Text File
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1991-08-21
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9KB
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181 lines
Using the BSE Flashdrive with the Atari Portfolio
-------------------------------------------------
You will need to copy the files: ATFLASH.SYS and ATPART.EXE to the
Portfolio. Put ATFLASH.SYS in the root directory on RAM drive C:,
ATPART can be placed on a RAMcard. Connect the Flashdrive to the
Portfolio using the Portfolio Smart Parallel Interface port. Use a
cable that is as short as possible.
Preparing the Flashdrive for use:
---------------------------------
The Flashdrive hard disk must be prepared before it can be used: There
are two basic steps to preparing it. First, the drive must be
partitioned. This defines one or more areas on the disk that will be
assigned logical drive letters (D:, E:, etc.). The largest partition
allowed is 32 megabytes, so if the basic capacity of your drive is
larger than 32 meg, you will need to define multiple partitions to be
able to use all of that capacity. The second step in preparation of
the disk is formatting. Formatting creates a directory structure in a
partition that allows DOS to locate files. Each partition must be
formatted before it can be used.
Important: If you have formatted your Flashdrive on a computer using a
version of DOS 3.0 or greater, it WILL NOT WORK properly on the
Portfolio, which uses DOS version 2.11. You will need to reformat it
with the ATPART.EXE program before it can be used.
To partition and/or format the Flashdrive, run the ATPART.EXE program.
After a message describing the configuration of the Flashdrive appears,
press any key to get to the main menu, where you can choose to create,
delete, format or view the current partition(s). From the main menu,
pressing <ESC> will exit the program and return to DOS. If any
partitions have been created or modified, you will be asked if you want
to save the changes. If you respond with 'N' the changes you made will
not be saved. If you press 'Y', the new partition data will be saved,
effectively erasing any data that may have been on the disk. If you
choose neither 'Y' or 'N' and press <ESC> again, you be returned to the
main menu.
Creating a partition: Select main menu option 1 to go to the Create
Partition sub-menu. There are two types of partitions you can create:
DOS and EXTended partitions. A DOS partition is limited to a maximum
size of 32 megabytes. An extended partition may be any size, and
contains one or more logical DOS partitions of 32 meg or less. The
first partition on a disk must be a DOS partition. Up to three more
DOS partitions may be defined, or an extended partition may be defined.
After defining an extended partition, logical DOS partitions must be
defined to fill the space it occupies.
After selecting the type of partition you want, the maximum number of
disk cylinders available to allocate to the partition are displayed at
a prompt. You can press ENTER to select this default value, or type in
a smaller number. (When defining an extended partition, always select
the maximum amount -- you can subdivide the partition later).
Examples of typical partition configurations:
1. 20 megabyte drive, one 20 meg partition:
Select the first option: Create DOS partition
Press ENTER to select the maximum number of cylinders
2. 60 megabyte drive, three 20 meg DOS partitions:
Select the first option: Create DOS partition
Look at the TOTAL number of cylinders on the disk displayed at the
top of the screen. Divide this number by three and enter the result
as the number of cylinders to allocate.
Repeat two more times.
3. 60 megabyte drive, one 32 meg DOS partition and a 28 meg extended
partition containing two 14 meg partitions.
Select the first option: Create DOS partition and use the maximum
number of cylinders (32 meg).
Select the second option: Create EXT partition and use the maximum
number of cylinders.
Select the third option: Create logical partition
Take the number of cylinders displayed at the prompt and divide by
two and enter the result. This will create a 14 meg DOS partition
in the extended partition. After you press ENTER, you will be
prompted again to enter the number of cylinders to allocate to the
next logical DOS partition. This will continue until all available
cylinders have been used.
If you define four partitions or less, there is no real advantage to
using extended partitions, and you might as well use four standard DOS
partitions. However, if you want more than four partitions you must use
an extended partition.
Deleting partition(s):
Select main menu option 2 to go to the Delete Partitiion menu. You can
delete the LAST partition defined, or delete all partitions.
After deleting or creating partition(s), the changes are not actually
saved to disk until you exit the program, or choose to format the
partition(s). At this point you have the choice of saving the
partition data or quitting without saving.
Displaying partitions:
Main menu option 4 allows viewing the current partition status. You
can see up to four partitions on the screen at one time. You will see,
starting from the left, the partition number, the starting and ending
cylinders of the partition, the partition size in cylinders, and in
megabytes, and the partition type. If any extended partitions are
defined, you are offered the option of seeing the extended partition
contents. A number followed by a + sign at the right shows how many
logical partitions are in the extended partition. Extended partitions
do not have a partition number; only DOS partitions and logical DOS
partitions are numbered.
Formatting a partition:
After you have defined a partition structure for the disk, you will
need to format the partition(s). Select main menu option 3 to reach
the Format Partition menu. Here you can choose to format a single
partition by number (see Displaying Partitions to find out how to
determine the number of a partition). Select menu option 1, then enter
the partition number and press ENTER. The partition will be formatted,
erasing all data in it. If you like, you can choose to format all
partitions at once using menu option 2. This will effectively wipe out
the entire disk data area.
It is possible to run the ATPART.EXE program without changing the
partition structure if you want to re-format a partition.
Using the prepared Flashdrive:
------------------------------
For the Portfolio to recognize the existence of the Flashdrive, the
ATFLASH.SYS device driver must be installed. This is done by placing
ATFLASH.SYS on drive C: and editing the CONFIG.SYS file on drive C: (if
you don't have a CONFIG.SYS file already, you will need to create one).
Using the Portfolio's built in text editor, add the following line to
the CONFIG.SYS file:
DEVICE = C:ATFLASH.SYS /P=8078 /T=15
The /P=8078 option tells the driver to use port address 8078 (hex) to
access the parallel port.
The /T=15 option sets the disk drive timeout delay. This helps save
battery power in the Flashdrive by turning the motor off when not in
use. The motor will turn back on automatically when the disk is
accessed. You can change this number if you want, or make it 0 if you
don't want the drive to power down automatically.
After saving the CONFIG.SYS file, make sure the Flashdrive is turned on
and press CTRL-ALT-DEL to reboot the Portfolio. You should see a
message on the screen describing the disk drive model and serial
number, as well as a description of the capacity of each logical drive.
If an error message appears, check the cable connections and make sure
the Flashdrive battery low indicator is out. After checking the
connections, reboot the Portfolio again.
The Flashdrive should now be ready for use. Here are some important
tips for successful operation with the Flashdrive:
When you are ready to switch off the power to the Flashdrive, be sure
to turn off the Portfolio FIRST. Always turn off the Portfolio and the
Flashdrive before connecting or disconnecting them. When you are ready
to switch the Flashdrive on, do so BEFORE turning on the Portfolio. If
the Flashdrive has been disconnected from the Portfolio, remember to
press CTRL-ALT-DEL to reboot the computer after turning them on.
umber of cylinders
2. 60 megabyte drive, three 20 meg DOS partitions:
Select the first option: Create DOS partition
Look at the TOTAL number of cylinders on the disk displayed at the
top of the screen. Divide this number by three and enter the result
as the number of cylinders to allocate.
Repeat two more times.
3. 60 megabyte drive, one 32 meg DOS partition and a 28 meg extended
partition containing two 14 meg partitions.
Select the first option: Create DOS partition and use the maximum
number of cylinders (32 meg).
Select the second option: Create EXT partition and use the maximum
number of cylinders.
Select the third option: Create logical partition
Take the number of cylinders displayed at the prompt and divide by
two and enter the resu