How to Re-Install Windows 9x
  1. Go to Control Panel > Add/Remove Programs
  2. Click on the Startup Disk tab, then on Create Disk and follow the instructions. Windows 98 users skip to # 5
  3. Open Explorer and copy the following files to your startup disk:

    MSCDEX.EXE from C:\Windows\Command
    HIMEM.SYS from C:\Windows
    Your DOS CD-ROM driver (e.g. IDE-CD.SYS)
    Your DOS Mouse driver (e.g. MOUSE.COM)

  4. Edit the AUTOEXEC.BAT & CONFIG.SYS to load your DOS CD-ROM driver & mouse driver (read the documentation that came with the CD-ROM drive and Mouse on how to do this)

    Example CONFIG.SYS:
    DEVICE=HIMEM.SYS

    Example AUTOEXEC.BAT
    @echo off
    ctload sbide.sys /d:mscd001 /p:170,15
    mscdex /d:mscd001 /v /m:8
    mouse.com

  5. Backup your documents and any other data that is critical
  6. Restart your computer with the startup disk in the drive
  7. (Optional) At the A:\> prompt, type fdisk, answer y to turning on LBA (if asked), then go to Create primary DOS partition and follow the instructions. Exit when finished
  8. At the A:\> prompt, type format c: and answer y to the question Are you sure?
  9. Restart the computer with the startup disk still in the drive
  10. At the A:\> prompt change to your CD-ROM drive (e.g. type d:)
  11. At the D:\> prompt type setup and follow the instructions
  12. After Windows is configured install all your applications
Contributed by GearHead