WESTERN DIGITAL FAX DOCUMENT #xxxx DISK COMPRESSION ISSUES AND HARD DISK INSTALLATION ================================================== The use of disk compression utilities to increase available hard disk space is becoming more common. When PC disk subsystems are upgraded with additional storage (adding a second hard drive), configuration issues may arise that make access to the existing compressed data difficult. This document was created to address some of the common disk compression issues encountered when installing a second hard drive. The following disk compression products are covered: DoubleSpace (included in Microsoft MS-DOS versions 6.0 & 6.20) DriveSpace (included in Microsoft MS-DOS version 6.22) While other less common disk compression utilities exist - and are not discussed in this document - contacting the software manufacturer for technical support is always the best idea. Some phone numbers for the manufacturers of disk compression utilities are located at the end of this document. ISSUES SPECIFIC TO DOUBLESPACE AND DRIVESPACE ============================================= If you are installing a second hard drive in your computer and your existing drive is compressed with DoubleSpace or DriveSpace, it is easiest to install the new drive as the secondary/slave drive. After installing the new drive as the slave, if you are unable to access one or more of your compressed drives, run the DBLSPACE.EXE or DRVSPACE.EXE program and choose Mount from the Drive menu. This lists any unmounted compressed volume files and provides the option to mount the compressed volume(s). If you wish to make the new drive the primary/master drive and your existing drive the secondary/slave drive be sure to follow the special instructions for DoubleSpace/DriveSpace users as specified in the following sections. NOTE: If you encounter problems using DoubleSpace or DriveSpace, contact Microsoft MS-DOS support at the number listed at the end of this document. GENERAL INSTALLATION RECOMMENDATIONS ==================================== The installation instructions below will allow the drive to be used as either a bootable master or slave drive. If the ability to boot drive D: at some later time is not an issue, use DOS's FDISK and FORMAT or Disk Manager to configure drive D: and skip sections I, II and III. I. BEFORE YOU START a. Make sure you have the following: 1. A bootable DOS disk with FDISK.EXE and FORMAT.COM. 2. Record the Cylinder/Head/Sector information for your existing hard drive currently specified in your CMOS setup. 3. Master/Slave jumper information for your existing hard drive. - 1 - 4. If you use Microsoft DoubleSpace or DriveSpace disk compression on your existing drive AND you are installing the new drive as the primary/master drive, carry out steps 1 - 6 in the "Special Instructions For Users of DoubleSpace/DriveSpace" section (below) before proceeding with section Ib. b. Temporarily install the Caviar drive as the only hard drive. 1. No jumpers are required to support standalone mode on the Caviar drive. 2. Make sure the 40 pin IDE cable is disconnected from the existing drive. 3. Boot the system and configure the C: drive parameters through your system configuration utility. For the AC2540 use 1024 cyl, 16 heads and 63 sectors. c. Start the system from a bootable DOS disk in floppy drive A:. 1. For a bootable DOS installation, continue at section IIa. 2. For a bootable DISK MANAGER installation, continue at section IIIa. II. USING DOS (528mB BOOTABLE, NON-Disk Manager installation) a. At the A> prompt, type FDISK and press return. 1. Choose option 1 (default), Create DOS partition... Press enter. 2. Choose option 1 (default), Create primary DOS partition. Press enter. 3. Accept the default "Y" use all available space for DOS partition and set the partition active. 4. Press any key to continue. 5. Press any key to reboot from the bootable DOS disk. b. At the A> prompt, type FORMAT C: /S and press return. 1. Answer "Y" to Destroy all data on non-removable disk. 2. The screen should report FORMATTING 504 MB. c. When Format is complete, remove the floppy from drive A: and reboot. 1. Check to make sure the drive boots properly to drive C:. a. If the drive boots properly, continue with step d. b. If the drive does not boot properly, rerun steps starting at Ic. d. Turn off the computer and re-install your existing drive along with the new drive. 1. Set the drive jumpers for primary/master drive (drive C:) and secondary/slave drive (drive D:) as appropriate. e. Start the system and change the CMOS drive data for drives C: D:. 1. Configure the C: and D: drive parameters through your system configuration utility. C: drive parameters refer to the primary/master drive and D: drive is the secondary/slave. f. Reboot the system from the C: drive. 1. The boot process should complete successfully and bring you to the C> prompt. g. If you use Microsoft DoubleSpace or DriveSpace disk compression on your existing drive AND you installed the new drive as the primary/master drive, carry out steps 6 - 9 in the "Special Instructions for Users of DoubleSpace/DriveSpace" section (below) to re-enable the disk compression. h. This completes the installation of your new drive. If you change to the new drive and run the CHKDSK command, it should report approximately 527,500,000 bytes total disk space. - 2 - III. USING DISK MANAGER (540mB BOOTABLE) a. At the A> prompt, insert the Disk Manager disk, type DM and press enter. 1. Choose option E, Easy Disk Installation. 2. When prompted, insert your bootable disk in drive A:. b. When installation completes, remove the floppy from drive A: and reboot. 1. Check to make sure the drive boots properly to drive C:. a. If the drive boots properly, continue with step c. b. If the drive does not boot properly, rerun steps starting at Ic. c. Turn off the computer and re-install your existing drive along with the new drive. 1. Set the drive jumpers for primary/master drive (drive C:) and secondary/slave drive (drive D:) as appropriate. d. Start the system and change the CMOS drive data for drives C: D:. 1. Configure the C: and D: drive parameters through your system configuration utility. C: drive parameters refer to the primary/master drive and D: drive is the secondary/slave. e. If you are leaving your existing drive as the primary/master drive, reboot the system from the C: drive and carry out steps e1 and e2. 1. Insert the Disk Manager floppy, change to that floppy drive and type DMCFIG and press enter. 2. Follow instructions and allow DMCFIG to modify CONFIG.SYS. This will copy the proper files onto your existing C: drive to support the Disk Manager partition on drive D:. f. If you use Microsoft DoubleSpace or DriveSpace disk compression on your existing drive AND you installed the new drive as the primary/master drive, carry out steps 6 - 9 in the "Special Instructions for Users of DoubleSpace/DriveSpace" section (below) to re-enable the disk compression. g. Reboot the system from the C: drive. 1. The boot process should complete successfully. 2. If you change to the new drive and run the CHKDSK command, it should report approximately 539,750,000 bytes total disk space. SPECIAL INSTRUCTIONS FOR USERS OF DOUBLESPACE OR DRIVESPACE =========================================================== IMPORTANT: Follow the instructions in the "General Installation Recommendations" section above. You will be referred to this section if it is appropriate. STEPS TO TAKE BEFORE INSTALLING THE NEW DRIVE AS THE MASTER DRIVE ----------------------------------------------------------------- 1. Copy the DBLSPACE.EXE (or DRVSPACE.EXE) file to the bootable disk you created in Step Ia1. 2. Use the ATTRIB command to remove the hidden and system attributes from the DBLSPACE.BIN and DBLSPACE.INI (or DRVSPACE.BIN and DRVSPACE.INI) files. These files are located in the root of drive C: (or the root of the host for drive C: if C: is compressed). For example, if drive C: is compressed and H: is the host for C:, type the following commands: - 3 - ATTRIB -H -S H:\DBLSPACE.BIN ATTRIB -H -S H:\DBLSPACE.INI Note: DriveSpace users substitute DRVSPACE for DBLSPACE. 3. Copy these files to the bootable DOS disk you created in Step Ia1. For example: COPY H:\DBLSPACE.BIN A:\DBL.BIN COPY H:\DBLSPACE.INI A:\DBL.INI Note: DriveSpace users substitute DRVSPACE/DRV for DBLSPACE/DBL. 4. Use MS-DOS Edit to edit the A:\DBL.INI file and delete the ActivateDrive= line(s). For example, if drive C: is compressed and hosted on drive H:, delete the line that reads: ActivateDrive=H,C0 5. Save the A:\DBL.INI file and exit from Edit. STEPS TO TAKE AFTER INSTALLING THE NEW DRIVE AS THE MASTER DRIVE ---------------------------------------------------------------- 6. At the DOS prompt, carry out the following command: DIR C:\*.BIN /A If you do not see the DBLSPACE.BIN or DRVSPACE.BIN file in the root of C, copy the BIN file from the boot disk you created before installing the new drive. For example: COPY A:\DBL.BIN C:\DBLSPACE.BIN -- or -- COPY A:\DRV.BIN C:\DRVSPACE.BIN 7. Copy the INI file from the boot disk you created in 1a to the root of your C: drive. For example: COPY A:\DBL.INI C:\DBLSPACE.INI -- or -- COPY A:\DRV.INI C:\DRVSPACE.INI 8. Restart your computer from drive C. 9. Run the DBLSPACE.EXE/DRVSPACE.EXE program from the DOS boot disk and choose Mount from the Drive menu. Select the volume file to mount from the list provided. Repeat this step for each unmounted compressed volume file. DISK MANAGER INSTALLATIONS ========================== If after moving the Caviar drive to the D: drive position the blue banner for Disk Manager is not displayed or the message "BAD OR MISSING XBIOS.OVL" is displayed during boot up, follow these steps to correct this error. - 4 - 1. Boot the system from a bootable DOS 6.X diskette in drive A:. Check that drive C: is fully accessible and all files are present. 2. Insert the Disk Manager floppy, change to that floppy drive and type DMCFIG and press enter. 3. Follow instructions and allow DMCFIG to modify CONFIG.SYS. This will copy the proper files onto your existing C: drive to support the Disk Manager partition on drive D:. 4. Remove the floppy from drive A: and reboot. Proper access to the Disk Manager partition on drive D: should now be established. COMPRESSION UTILITY MANUFACTURERS SUPPORT NUMBERS ================================================= CubeIt - SoftLogic Solutions, main number (603) 627-9900 support number (603) 644-5555 BBS number (603) 644-5556 DoubleSpace or DriveSpace - Microsoft, main number (206) 882-8080 MS-DOS support (206) 646-5104 BBS number (206) 936-6735 FastTips service (800) 936-4200 Stacker - STAC Electronics, main number (619) 431-7474 BBS number (619) 431-5956 FAXback service (619) 431-8585 SuperStor - AddStor (no longer in business) - 5 -