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- Document 1200
- SUPERSTOR
-
- Initials:
- 11/26/91
- DRDOS 6.0
-
- Keywords:
- SUPERSTOR
- COMPRESSION
- ADDSTOR
-
- 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.
-
-