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when DOS is not DOS (Miscellaneous)

posted by 0ffer(R) Homepage, 16.06.2015, 16:50

> To get around this and have io.sys load and run your own code
> directly it must be a DOS "MZ" exe file even though it is named
> command.com and the first byte of the code must be 0x7A which is is checked
> by io.sys.

How to change io.sys from MS-DOS 7.10 to remove this check?
io.sys from MS-DOS 8.0 make other check...

 

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