Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!udel!burdvax!bbking!rmarks
From: rmarks@KSP.Unisys.COM (Richard Marks)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Open files when PC goes down
Keywords: Recovery Crash Directory
Message-ID: <673@bbking.KSP.Unisys.COM>
Date: 20 Mar 89 19:49:55 GMT
References: <1939@holos0.UUCP>
Distribution: usa
Organization: Unisys/Knowledge Systems Organization, Frazer, PA
Lines: 18

In article <1939@holos0.UUCP> lbr@holos0.UUCP (Len Reed) writes:
>I am developing a system that runs on MD-DOS 3.x.  I need to be able
>to save as much data as possible if the system crashes.
>
>As I understand it, MS-DOS doesn't update the directory entry on an
>output file until the file is closed.
>
>So, is there a way to get MS-DOS to update the file size without closing
>the file?

	On DOS 3.3 use int 21, func 68, BX=handle to secure a file.

	Also on any DOS 2.x/3.x can try int 21, func 0D which resets the
	disk.  On some BIOSes this will update all open files.

Good Luck,
Richard Marks
rmarks@KSP.unisys.COM