Article ID: 63906
Article Last Modified on 11/16/2006
APPLIES TO
- Microsoft MS-DOS 1.0 Standard Edition
- Microsoft MS-DOS 2.11 Standard Edition
- 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 5.0a
- Microsoft MS-DOS 6.0 Standard Edition
- Microsoft MS-DOS 6.2 Standard Edition
- Microsoft MS-DOS 6.21 Standard Edition
- Microsoft MS-DOS 6.22 Standard Edition
This article was previously published under Q63906
SUMMARY
The two most frequently used naming conventions for system files are the ones used by Microsoft MS-DOS and IBM for PC-DOS. They are as follows:
Filename Product ------------------------------- IO.SYS/MS-DOS.SYS Microsoft MS-DOS IBMBIO.COM/IBMDOS.COM IBM PC-DOS
MORE INFORMATION
These are not the only names used for system files, but they are the most common. The following is a list of some original equipment manufacturer (OEM) versions of DOS and their system filenames:
OEM Versions System Filenames ------------------------------------------------------------ AT&T 3.1, 3.2, 3.30a IBMBIO.COM IBMDOS.COM Bluechip 3.2 IO.SYS MSDOS.SYS Compaq 1.1, 1.11 IOSYS.COM MSDOS.COM Compaq 2.01+ IBMBIO.COM MSDOS.COM Dell 3.3 IO.SYS MSDOS.SYS DTK 4.01 IO.SYS MSDOS.SYS EPC/EMPAC 4.01 IO.SYS MSDOS.SYS HP Vectra 3.2 IBMBIO.COM IBMDOS.COM ITT 2.11, 3.10 IBMBIO.COM IBMDOS.COM IBM All IBMBIO.COM IBMDOS.COM Intel 4.01 IO.SYS MSDOS.SYS Lyi-Cheng 4.01 IO.SYS MSDOS.SYS Microsoft All IO.SYS MSDOS.SYS NCR 2.11 IO.SYS MSDOS.SYS NCR 3.20.20 IBMBIO.COM IBMDOS.COM Northgate 4.0 IO.SYS MSDOS.SYS Parcorp 3.3 IO.SYS MSDOS.SYS Phoenix 4.01 IO.SYS MSDOS.SYS Sperry 3.2 MIO.SYS MSDOS.SYS Tandy 2.11 IO.SYS MSDOS.SYS Tandy 3.1, 3.2, 3.3 IBMBIO.COM IBMDOS.COM Telex 3.21 IO.SYS MSDOS.SYS Wang 2.11 BIOS.SYS MSDOS.SYS Wyse 3.1, 3.21, 3.3 IBMBIO.COM IBMDOS.COM Zenith 2.11, 3.21 IBMBIO.COM IBMDOS.COM
NOTE: This is not a complete list of OEMs; only the listed versions were checked.
Additional query words: 6.22 1.x 2.x 3.x 4.00 4.01 4.01a 5.00 5.00a 6.00 6.20
Keywords: KB63906