What causes the error message

Question

When I start the computer, I get a blank screen with the following message:

"INVALID DISK SYSTEM"

I already inserted all floppy disk that I have and keeps giving me the same message.

There is any way I can get rid of that message?

Answer

This question was answered on January 20, 2004. Much of the information contained herein may have changed since posting.

It could be either of (2) things:

1 A boot sector virus: If so, run a current version of antivirus software and see if that doesn't

correct it.

2 Io.sys could be missing or corrupted: If so you neee retor the file from a backup or emergency startup disk;

Do the following:

A Boot from the startup disk

B Run the SYS C: command to restore the Io.sys, Msdos.sys, Drvspace.bin and Command.com

C Remove disk and reboot

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Author

Posted by Student of Katharine Gibbs School - New York on January 20, 2004