MS-DOS 6.22 StepUp Appears to Have Duplicate Files (121320)


The information in this article applies to:

  • Microsoft MS-DOS operating system 6.22
This article was previously published under Q121320

SUMMARY

Some files included with MS-DOS 6.22 StepUp appear to be duplicated, having the same filenames as other files, but with filename extensions that include an underscore (_), caret (^), or number sign (#).

MORE INFORMATION

MS-DOS 6.22 StepUp contains two types of binary patch files:
  • Files with the filename extension .XX#. These files contain MS-DOS 6.0 checksums to patch MS-DOS 6.0 files to the MS-DOS 6.22 level. (Examples include XCOPY.EX# and SHARE.EX#.)
  • Files with the filename extension .XX^. These files contain MS-DOS 6.2 (or MS-DOS 6.0/6.2 upgraded to MS-DOS 6.21) checksums to patch appropriate files to the MS-DOS 6.22 level. (Examples include XCOPY.EX^ and SHARE.EX^.)
Files with the filename extension .XX_ are standard compressed files that are expanded during the setup process. (Examples include DELOLDOS.EX_ and COUNTRY.TX_.)
Modification Type:MajorLast Reviewed:11/23/1999
Keywords:KB121320
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