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31601.TXT
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1993-06-30
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_______________________________________________________________
STACKER NOTE STACKER NOTE
Title: CONVERTING REMOVABLE DOUBLESPACE DISKS
(Applies to Stacker for Windows & DOS 3.1)
STAC FAX 31601 (6/93)
_______________________________________________________________
BACKGROUND
Stacker's Setup converts only mounted, fixed DoubleSpace
drives. However, Stacker's DCONVERT program easily converts
a removable disk, such as a floppy disk, a Bernoulli, or a
SyQuest.
The following procedure assumes you've already installed
Stacker.
SOLUTION
For this example, let's assume that Drive G: is a Bernoulli
drive that was compressed with DoubleSpace. In the
conversion procedure, you will check the drive for any pre-
existing problems, run a program called DCONVERT to convert
the drive, and then mount the new Stacker drive.
NOTE:
Because it is not yet a Stacker drive, Drive
G does not appear in Stacker's drive map.
Check for any pre-existing problems
1. If you are in Windows, please exit to DOS. The
procedure works only under DOS.
2. Insert the removable disk into its drive.
3. Check the drive for any pre-existing problems. At the
DOS prompt, type:
CHKDSK G: <Enter>
Let the DOS CHKDSK utility fix any problems it finds.
Convert the drive to a Stacker drive
1. Find the name of the compressed volume file by typing:
DIR G: /AH <Enter>
2. Look for a filename such as DBLSPACE.000. Note the
name to use in the next step.
_______________________________________________________________
Copyright 1993, Stac Electronics Page 1 of 2
3. Type:
DCONVERT /C G:\DBLSPACE.000 <Enter>
where DBLSPACE.000 is the drive to be converted to a
Stacker drive.
IMPORTANT!
DO NOT INTERRUPT THE CONVERSION PROCESS!
If you do not let DCONVERT finish, you
may lose data.
Mount the new Stacker drive
DCONVERT converts the drive into a Stacker drive. The name
of Stacker's "volume file" is STACVOL.DSK. If you're using
only one removable drive, Stacker Setup automatically
allowed for it. So, when you insert your removable disk
into the drive, Stacker automatically mounts it.
TAKE FULL ADVANTAGE OF STACKER SAFETY
Stacker Optimizer can recompress your data safely, giving you
double the disk capacity without the DoubleSpace risks.
To recompress your data with the Stacker Optimizer:
1. At the DOS prompt, type:
STAC <Enter>
2. Choose Stacker Optimizer.
3. Select the drive you want to recompress.
4. Choose Restack.
Stacker recompresses the data on the selected drive.
_______________________________________________________________
Copyright 1993, Stac Electronics Page 2 of 2