Getting an invalid system error

Question

I formated my hard drive to reinstall window. When I try to boot to my "boot disk" it gives me a invalid system disk error. The disk works ok in my other pc. Everything worked before. I made sure the boot sequence was to the A drive in the BIOS. Thanks

Answer

This question was answered on October 7, 2003. Much of the information contained herein may have changed since posting.

1-Suspect a boot sector virus

2-IO.SYS is missing or corrupted restore the file from a back up or emergency startup disk

3-Boot from awindow 9x emergency starup disk

4-to restore IO.SYS execute the command SYS C:

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Author

Posted by Student of Katharine Gibbs School - New York on October 7, 2003