DOCUMENT:Q75087 17-DEC-2000 [msdos] TITLE :3.5-inch MS-DOS 5 Upgrade May Fail with Early DOS Versions PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:5.x,6.0,6.2,6.21,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system versions 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22 ------------------------------------------------------------------------------- SUMMARY ======= When upgrading to MS-DOS 5.0 or later from DOS versions earlier than 3.2, installation from the 3.5-inch MS-DOS 5 Upgrade disks may fail. Most MS-DOS and OEM DOS versions earlier than DOS 3.2 do not support 3.5- inch floppy drives and thus will not be able to correctly read all the files on 720K disks. When the Setup command is run from MS-DOS 5 Upgrade Disk 1 - Setup, the message "bad command or file name" will be displayed. When the DIR command is used on one of the MS-DOS 5 Upgrade disks, all the files will not be listed, or the filenames will displayed as garbage (extended ASCII characters). For example, IBM PC-DOS versions 3.0 and 3.1 will provide the following information with the DIR command: Setup Disk Files on Disk Files Displayed ---------- ------------- --------------- 1 37 5 2 28 0 3 52 27 Other OEM DOS versions may also exhibit the same behavior or display garbage. MORE INFORMATION ================ To successfully install the MS-DOS 5 or later Upgrade, do one of the following: - Obtain the 5.25-inch MS-DOS 5 or 6 Upgrade disks if the computer system has a 5.25-inch floppy drive. - If another computer that is running DOS 3.2 (or later) with 1.2 MB and 3.5-inch floppy drives is available, and the current system has a 1.2 MB floppy drive, do the following: 1. Copy all files from each 3.5-inch MS-DOS 5 or 6 Upgrade floppy disk to three 5.25-inch 1.2 MB disks using the second computer. 2. Label the disks as Disk 1, Disk 2, and Disk 3 using the LABEL command. There should be six spaces between the word "Disk" and the number in the volume label (for example, Disk 1). 3. Run Setup from the 1.2 MB floppy drive on the first computer. - Start from a later DOS version that supports a 3.5-inch floppy drive, such as MS-DOS or PC-DOS versions 3.2 or later, and run Setup. Additional query words: 6.22 3.00 3.20 5.00 5.00a 6.00 6.20 ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a Version : MS-DOS:5.x,6.0,6.2,6.21,6.22 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.