WIN.COM

WIN.COM is the executable file used to load versions of Windows that run from DOS. In Windows 3.1 and its predecessors, it is executed either manually from the DOS prompt or as a line in AUTOEXEC.BAT. In Windows 95 and onward it is automatically invoked by IO.SYS after AUTOEXEC.BAT is processed.[1] The file is present in the SYSTEM32 directory of some Windows NT-based versions of Windows (such as Windows 2000, Windows XP and Windows Vista) for backwards compatibility purposes.

WIN.COM
Developer(s)Microsoft
Operating systemMicrosoft Windows
TypeWindows loader

Usage

WIN.COM has several parameters that facilitate system recovery and diagnostics.[2]

Issues

Corruption or deletion of WIN.COM caused many issues for users of Windows 1.0, Windows 2.0, Windows 3.0 and 3.1, Windows 95, Windows 98, and Windows ME and some early Windows viruses targeted WIN.COM. Corruption of WIN.COM would cause the system to be unable to load the graphical user interface.[3] In all these versions the system could still be booted to the underlying DOS prompt.

gollark: Or they could just use tools which make it harder to write code with memory leaks/corruption/whatever.
gollark: I *was* considering recompiling nginx with LibreSSL.
gollark: There is, what is it again, rustls, though. Maybe they'll provide some way to replace openssl with that.
gollark: I hope security-critical stuff like OpenSSL gets done in Rust or something.
gollark: (because HTML-escaping is the *default*, not opt-in, when rendering to HTML)

See also

References
  1. https://web.archive.org/web/20070927001312/http://www.techweb.com/encyclopedia/defineterm.jhtml?term=WIN.COm
  2. https://web.archive.org/web/20041124040119/http://support.microsoft.com/kb/142544
  3. https://www.computerhope.com/issues/ch000021.htm
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