Samuel Thibault wrote: > Mmm, why not looking for io.sys at the root? In all the versions of DOS > that I know there has to be one for the partition to be bootable. According to http://en.wikipedia.org/wiki/IO.SYS , some of the DOS clones did not use io.sys, which may be why I don't remember it well. I added a check for autoexec.bat || config.sys , just to have an added check and avoid the worse of the false positives. My gut feeling is that either a) nobody cares if their DOS is not detected, or b) if they do care, they have one of those files. -- see shy jo
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