Path: utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!uw-beaver!microsoft!leefi
From: leefi@microsoft.UUCP (Lee Fisher)
Newsgroups: comp.sys.ibm.pc
Subject: re: Backup incompatabilities between MS-DOS 3.2 AND MS-DOS 3.3
Message-ID: <1136@microsoft.UUCP>
Date: 8 Feb 88 07:15:06 GMT
References: <102@tron.UUCP>
Organization: Microsoft Corp., Redmond, WA
Lines: 21

In article <102@tron.UUCP>, celozzi@tron.UUCP (Dominic J Celozzi) writes:
>
> Someone I work with was complaining that Back-ups using MS-DOS 3.2
> aren't compatable with those using MS-DOS 3.3? That is, if someone
> updated to MS-DOS 3.3, then all the backups done under the old
> version would be worthless! Is this actually true??

The file format for BACKUP files in DOS v3.3 is different than with
previous versions of BACKUP. (It is supposedly a more efficient and
stable storage method.) However, the DOS v3.3 RESTORE command will
read the file format of previous DOS versions, and thus will be able
to restore files backed up using older versions of BACKUP. So, upward
compatibility is there, but not backward compatibility. 

-Lee
________
01001100  Lee Fisher, Microsoft Corp., Redmond, WA.
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01001001  disclaimer: My opinions are my own, not those of my employer.