Insufficient Disk Space to Install MS-DOS 6.21 Upgrade (114358)
The information in this article applies to:
• Microsoft MS-DOS operating system 6.21
• Microsoft MS-DOS operating system 6.22
This article was previously published under Q114358
You run out of disk space when installing MS-DOS 6.21 over MS-DOS 6.0 or
later or IBM PC DOS version 6.3.
When you install MS-DOS 6.21 on a system that has an existing copy of
Microsoft Backup for MS-DOS or Microsoft Backup for Windows, you may get
past the 4,200,000-byte minimum disk space check and subsequently run out
of disk space during Setup. On a system with MS-DOS 6.0 or 6.2 installed
with Backup for MS-DOS and/or Backup for Windows, the actual minimum free
space required is 5,084,736 bytes.
To work around this problem, use the following steps when you receive the
above error message:
• Exit Setup.
• Rename or delete MSBACKUP.EXE and MWBACKUP.EXE.
• Restart Setup.
This allows you to choose None for Backup and reduce the required free
space to install MS-DOS.
| Modification Type:
|| Last Reviewed: