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If you install, remove, and then reinstall Windows 95, you may receive the following error message when you start Windows 95:
When you press a key, Windows 95 starts, but it may be unstable. You may see unusual characters on the screen and you may receive "fatal exception" error messages.
The DriveSpace VxD and the DriveSpace real-mode driver are mismatched. You may need to reinstall them.
Press any key to continue.
DriveSpace 3 from Microsoft Plus! for Windows 95 places real-mode drivers on the hard disk that are not removed when you delete the Windows folder. When you reinstall Windows 95, Setup places a DriveSpace VxD in the Iosubsys folder that is incompatible with the DriveSpace 3 drivers.
Replace the Drvspacx.vxd file in the Iosubsys folder with the correct version from the original Microsoft Plus! disks or CD-ROM. To do so, follow these steps:
This behavior can also occur if you reinstall Windows 95 to a different folder than its original folder after you install Microsoft Plus!. If you reinstalled Windows 95 in a different folder and you want to use the original installation, edit the Msdos.sys file on both the host drive and the compressed drive. Make sure that the PATH statement points to the correct folder. After you edit the Msdos.sys files, save the files and then restart your computer.
NOTE: If you are using a Microsoft Plus! CD-ROM and you are not using real-mode CD-ROM drivers, this resolution does not work.
The following tables list the correct files.
Windows 95 without Microsoft Plus!:
Windows 95 with Microsoft Plus!:
File name Date/Time Size Location Drvspace.bin 07-11-95 9:50am 71,287 C:\ and root of compressed drive Dblspace.bin 07-11-95 9:50am 71,287 C:\ and root of compressed drive Drvspacx.vxd 07-11-95 9:50am 54,207 C:\windows\system\iosubsys
Windows 95 OEM Service Release 2:
File name Date/Time Size Location Drvspace.bin 07-14-95 12:00am 64,135 C:\ and root of compressed drive Dblspace.bin 07-14-95 12:00am 64,135 C:\ and root of compressed drive Drvspacx.vxd 07-14-95 12:00am 61,719 C:\windows\system\iosubsys
File name Date/Time Size Location Drvspace.bin 08-24-96 12:00am 65,271 C:\ and root of compressed drive Dblspace.bin 08-24-96 12:00am 65,271 C:\ and root of compressed drive Drvspacx.vxd 08-24-96 11:11am 57,466 C:\windows\system\iosubsys
Article ID: 134859 - Last Review: September 27, 2013 - Revision: 1.2