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Document ID: DJON-3G8UDY

Aptiva - Uncompressing a SuperStor/DS Drive

Applicable to: United States

With ongoing changes in the price of hard drives, the temptation to add another hard drive to the system may be irresistible. Getting a second drive will provide a large amount of storage space for new applications and data files, allowing you to migrate some or all of the applications from a compressed drive to the new drive.

Because disk compression is a software function, the disk compression program itself takes up some amount of conventional or upper memory. When the disk is being accessed, each operation will also take additional time before the data can be read or written to the drive. While this is a relatively small amount of time, it can add up for large files or sometimes affect time-sensitive operations.

Depending on the types of applications that you run, you may decide that the space benefits provided by the disk compression program are less desirable than having more memory for running programs and increasing overall system performance. It is also possible that you run the SSTOR program and accidentally selected the Prepare function, which resulted in the compression of the drive. Thus, you may want to remove the data file compression from the drive.

To uncompress a SuperStor compressed drive, use the following steps:

1) Exit from Windows or DOSSHELL, if either is being used, and go to the DOS prompt. Do not attempt to use the DOS prompt icon in Windows or the Shift+F9 keys in DOSSHELL when you are preparing to remove disk compression.

2) At the DOS prompt, enter the command: SSUNCOMP. This will bring up a menu and a list of compressed drives for selection.

3) Select the Uncompress option and then select the drive ID that is to be uncompressed.

4) Select the Overwrite method for handling duplicate files.

5.) The decompression of the selected drive will now begin. This function can take some time to complete, since it will need to defragment the compressed drive, set up the uncompressed space for use, and then move all files from the compressed drive to the uncompressed space.

6) When the decompression completes, the program prompts for other drives that you might want to uncompress. If so, select the desired drive and repeat the above process.

7) If you have uncompressed all drives, the SSUNCOMP program will prompt you to determine if you want to remove the DBLSPACE.BIN file from the root directory of the boot drive. If you specify Yes, the next bootup will not load that file into memory, thus freeing up the memory for other uses.

If you wish, you can elect to keep the DBLSPACE.BIN file in the root directory for your own reasons, even though all disk compression has been otherwise removed. At a later time, you may then decide that you no longer wish to keep the DBLSPACE.BIN active, since it will take up memory space during bootup of the system and serves no other purpose with all disk compression removed.

To remove the DBLSPACE.BIN driver at a later time, use the following steps:

1) At the DOS prompt, change to the root directory of the boot drive with the command:

C:

2) Enter the commands:

ATTRIB -R -S -H DBLSPACE.BIN
DEL DBLSPACE.BIN

3) Now reboot the system and verify that the DBLSPACE driver is no longer being loaded by entering the command:

MEM /C /P

at the DOS prompt.

Search Keywords

Hint Category

DOS/Windows 3.x, Utility Software

Date Created

18-04-97

Last Updated

25-01-99

Revision Date

14-12-99

Brand

IBM Aptiva

Product Family

Aptiva, PS/1

Machine Type

2011, 2144, 2168, 2121, 2123, 2133, 2155

Model

1R2; 66P; 67P; 86P; OR8; 1R1; 1R3; 1R5; 22P; 24P; 25P; 27P; 29P; 63P; 67P; 82P; 83P; OR6; OR7; OR9; 1R0; 1R1; 26P; 62P; C01; C34; M01; NEA; T35; U35; A62; A82; A94; B82; C42; C92; G42; M82; S92; 081; 087; 131; 137; K37; N31; N81; 11E; 13T; 14C; 16E; 17A; 18A; 18T; 19C; 21C; 23C; 28A; 46M; 51D; D50; G11; G13; G43; G46; G46; G49; G49; G50; G53; M40; M40; M46; M46; P11; P13; P43; P50; P53; R04; R05; R06; R09; R38; R42; R43; R44; R84; R86; R87; RO3; S11; S13; S43; S45; S45; S47; S47; S48; S48; S50; S53; W11; W13; W42; W42; W43; W45; W45; W50; W53; 20E; 22T; 24C; 24M; 28V; 39E; 41T; 43C; 45V; 48E; 50T; 52C; 55V; 72E; 74T; 76C; 78C; 79C; 81A; 82E; 84T; 86C; 87C; CC1; D53; G14; G44; G52; G54; G72; G76; G78; G82; NM1; P14; P44; P57; P71; P74; P76; P78; P84; R14; R15; R16; R17; R18; R51; R52; R57; R58; R62; R63; R67; R71; R89; R93; R96; R97; S14; S44; S50; S54; S70; S75; S76; S78; S80; W14; W44; W48; W54; W67; W76; W77; W78; Z33; 28V; 31E; 33T; 37C; 38C; 51E; 54T; 56C; 57C; 88V; BB1; G57; G87; OR1; OR3; OR4; OR5; P89; R28; R29; R31; R74; R78; R82; R98; S55; S85; SR1; US1; W52; W82; 2R3; S15

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