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Microsoft KB Archive/100622

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Knowledge Base

Err Msg: Sector Size Too Large with Corel Drivers

Article ID: 100622

Article Last Modified on 12/5/2003


  • Microsoft MS-DOS 3.1
  • Microsoft MS-DOS 3.2 Standard Edition
  • Microsoft MS-DOS 3.21 Standard Edition
  • Microsoft MS-DOS 3.3 Standard Edition
  • Microsoft MS-DOS 3.3a
  • Microsoft MS-DOS 4.0 Standard Edition
  • Microsoft MS-DOS 4.01 Standard Edition
  • Microsoft MS-DOS 5.0 Standard Edition
  • Microsoft MS-DOS 6.0 Standard Edition
  • Microsoft MS-DOS 6.2 Standard Edition

This article was previously published under Q100622


The device driver for Corel optical drives may generate the following error message when restarting a system:

Sector size too large

To correct this problem, run the PATCH.EXE program supplied with optical drives by Corel Corporation. PATCH.EXE modifies the IO.SYS file to allow the recognition of a sector size greater than 512 bytes.


According to Corel Technical Support, the PATCH.EXE program executes automatically the first time you install the optical device driver. However, any time you upgrade the MS-DOS version, reformat your hard disk drive, or perform any function that replaces the "patched" IO.SYS file, you must run PATCH.EXE again.

For more information, call Corel Technical Support.

The products included here are manufactured by Corel Corporation, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: 6.22 system 3rdparty cdrom cd rom 3.0 SCSI 3.00 4.0 4.00 5.0 5.0a 5.00 5.00a 6.00 6.20

Keywords: KB100622