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From: d88-eli@nada.kth.se (Erik Liljencrantz)
Newsgroups: comp.sys.ibm.pc
Subject: Re: How can I poll a drive?
Message-ID: <1668@draken.nada.kth.se>
Date: 15 Sep 89 14:18:11 GMT
References: <342@castle.ed.ac.uk> <45855611.15768@bladder.UUCP> <331@helens.Stanford.EDU>
Reply-To: d88-eli@nada.kth.se (Erik Liljencrantz)
Organization: Royal Institute of Technology, Stockholm, Sweden
Lines: 17

In article <331@helens.Stanford.EDU> mike@relgyro.STANFORD.EDU (Mike Macgirvin) writes:
>In article <45855611.15768@bladder.UUCP> wagnere@bladder.UUCP (Eric Wagner) writes:
>>In article <342@castle.ed.ac.uk>, erck12@castle.ed.ac.uk (Gnome) writes:

>>> Questions about determining valid drive letters and open drive doors.
> Suggestion to use _harderr() and _hardresume() in MSC 5.1

  To determine if a drive letter is valid, use the MSDOS INT 21 (AH=xx)
function select drive and then use INT 21 (AH=yy) return current drive and
check if they are equal (Sorry about the xx and yy, but I don't have the
manual at hand...).

  I don't know about the open drive door, but MSDOS doesn't know either...

---
Erik Liljencrantz     | "No silly qoutes!!"
d88-eli@nada.kth.se   |  Embraquel D. Tuta