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- Document 1200
- SUPERSTOR
-
-
- Description:
- Using SuperStor Disk Compression
-
- Installation Tips
-
- The DR DOS 6.0 version of SuperStor recognizes and will operate
- correctly on SuperStor partitions created with the AddStor
- retail SuperStor version 1.3. The DR DOS 6.0 version of
- SuperStor was not designed to be compatible with other operating
- systems and should not be expected to work properly except with
- DR DOS 6.0.
-
- Before using SuperStor, backup the data on the drives to be
- compressed. If there is a power failure during the compression,
- some data could be lost.
-
- SuperStor requires that a config.sys file be present on the
- bootable drive to run properly. If you do not have a config.sys
- file, you can create one using the DR DOS 6.0 Editor. Use the
- DR DOS "DEVICE=" statement to load the SSTORDRV.SYS driver.
- SSTORDRV.SYS will automatically move into upper memory (through
- the use of XMS UMBs) if space is available. This is true
- regardless of whether the XMS UMBs are allocated by the DR DOS
- 6.0 operating system or by a third party memory manager.
-
- Determine the maximum amount of uncompressed space you want to
- leave on the disk. Note that a Windows 3.0 permanent swap file
- cannot reside on a compressed volume. The actual amount left
- uncompressed will depend on the data compression ratio and the
- disk space available before the compression was done (in other
- words, SuperStor will use as much space as necessary to compress
- all of your files).
-
- If you are using a disk partitioning utility or removable drive
- that requires a device driver, you might need to experiment to
- determine if that driver should come before or after
- SSTORDRV.SYS in your config.sys file. The following list is in
- the correct loading sequence for some of the more common of
- these device drivers:
-
- *DiskManager or SpeedStor partitioning utility drivers should be
- loaded before SSTORDRV.SYS.
-
- *The Bernoulli RCD.SYS driver must be loaded before
- SSTORDRV.SYS; also, to use SuperStor on a bootable Bernoulli
- cartridge, the RCD.SYS driver must be on an uncompressed
- partition.
-
- *The Plus Hardcard driver must be loaded after SSTORDRV.SYS.
-
- Many customers make a backup bootable floppy diskette in case of
- unexpected problems such as a hard disk controller failure.
- After creating a SuperStor partition, be sure you update the
- config.sys file on your backup bootable floppy to include the
- SuperStor driver (and DEVSWAP.COM, if required), and copy these
- files onto the bootable diskette.
-
- SuperStor should typically not be used on a network server,
- however it will work as designed on a workstation drive.
-
- Troubleshooting SuperStor
-
- The largest partition you can create with SuperStor is 512
- Mbytes, using a physical partition of 256 Mbytes. If you have a
- partition larger than 256 Mbytes, you will need to back up your
- data and use the FDISK utility to create smaller partitions
- before creating a SuperStor volume.
-
- Some customers have reported difficulty installing SuperStor
- onto a second physical hard drive. This might occur if DOS
- operating system files are present. Because system files are
- hidden, a DIR listing will not detect them. Use the command
- XDIR I*.* to determine if the files IBMBIO.SYS or IBMDOS.COM are
- present. If they are, use the ATTRIB command to remove the
- system and hidden attributes, then remove or rename the system
- files.
-
- Note:
- Do not remove or rename these files on your first physical hard
- drive.
-
- If you accidentally remove the SuperStor partition while the DR
- DOS 6.0 DELWATCH utility is active, you might be able to
- undelete the SuperStor partition file, thus restoring the
- SuperStor partition.
-
- If you use a third party disk optimizer on a SuperStor
- partition, data should not be lost or corrupted. However,
- because the third party optimizers might not properly recognize
- the structure of the SuperStor partition, they might actually
- cause worse fragmentation than that which existed prior to the
- optimization process. Therefore, we recommend that you use the
- DR DOS 6.0 DISKOPT utility, which will properly handle the
- SuperStor partition.
-