Running Microsoft Backup for MS-DOS under Windows ------------------------------------------------- You should not run Backup for MS-DOS while Windows is running. If you do not have Backup for Windows installed, see "Installing Anti-Virus, Backup, and Undelete after Setup" in the "Getting Started" chapter of the Microsoft MS-DOS USER'S GUIDE. (Type SETUP /E) Using MS-DOS 6.22 Backup to Restore MS-DOS 6 or 6.2 Backups ----------------------------------------------------------- Like earlier versions of MS-DOS Backup, the Backup programs included with MS-DOS version 6.22 support data compression during backup. However, the MS-DOS 6.22 Backup programs use a different compression format from earlier versions of Backup. Because of this, MS-DOS 6.22 Backup for Windows (MWBACKUP.EXE) cannot restore compressed backups created by MS-DOS 6 or 6.2 Backup. To restore such backups, use the version of Backup that created them, or use MS-DOS 6.22 Backup for MS-DOS (MSBACKUP.EXE). MS-DOS 6.22 Backup for MS-DOS (MSBACKUP.EXE) can restore earlier compressed backups only if your system is running DoubleSpace (that is, if DBLSPACE.BIN is loaded in memory). Otherwise, MSBACKUP.EXE cannot restore older backups; to restore such backups, use the version of Backup that created them. Both MSBACKUP.EXE and MWBACKUP.EXE can successfully restore 6 and 6.2 backups made without data compression. If you unchecked the Compress Backup Data box in the Backup Options dialog before you backed up, you should have no problems restoring your data using the MS-DOS version 6.22 Backup programs. Restoring a Previous Version of Microsoft Backup ------------------------------------------------ When you run MS-DOS 6.22 Setup, it installs the 6.22 version of the Backup program(s). The following procedures explain how to re-install the MS-DOS 6 or 6.2 version of Backup for MS-DOS. The procedure you use differs depending on the size of your MS-DOS 6 or 6.2 disks. (The commands in these procedures assume that your Setup disks are in drive A and your MS-DOS files are located in the C:\DOS directory; if the disks or MS-DOS files are in a different drive or location, adjust the commands accordingly.) * FILES ARE PROVIDED READY TO USE * If you have MS-DOS 6.2 disks (either 1.2 MB or 1.44 MB disks) or MS-DOS 6 disks (1.2 MB disks only): 1. Insert Setup Disk 1 in drive A. 2. Type the following commands: COPY A:*.OVL C:\DOS EXPAND A:MSBACKUP.EXE C:\DOS EXPAND A:MSBACKUP.HLP C:\DOS EXPAND A:MSBCONFG.HLP C:\DOS If you are using MS-DOS 6 disks (1.44 MB disks only): 1. Insert Setup Disk 2 in drive A. 2. Type the following commands: EXPAND A:MSBACKUP.EXE C:\DOS COPY A:*.OVL C:\DOS 3. Insert Setup Disk 3 in drive A. 4. Type the following commands: COPY A:*.OVL C:\DOS EXPAND A:MSBACKUP.HLP C:\DOS EXPAND A:MSBCONFG.HLP C:\DOS These commands copy Backup's files from drive A to the C:\DOS directory. If Setup Disk 1 is in drive B, or if your MS-DOS files are located in a directory other than C:\DOS, you should adjust the commands accordingly. WARNING ------- You may wish to rename or copy the MS-DOS 6.22 versions of the above files to a safe location before copying the 6.2 versions. For possible future use.