[pjmlp]

Almost, as everyone knows DR-DOS, MS-DOS and PC-DOS were like 99% compatible, the problem was when one was lucky enough to trip on that 1%, because they reverse engineered MS-DOS (even the IBM's PC-DOS license did not provide access to everything Microsoft was doing on MS-DOS).

[_joel]

1% like running Windows 3.1? :)

[pjmlp]

I saw what you did there.