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From: heff@bsdpkh.ATT.COM (Paul K Heffner)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Strange DOS behavior
Message-ID: <296@bsdpkh.ATT.COM>
Date: Mon, 11-May-87 10:57:48 EDT
Article-I.D.: bsdpkh.296
Posted: Mon May 11 10:57:48 1987
Date-Received: Wed, 13-May-87 06:46:58 EDT
References: <1293@ur-tut.UUCP>
Organization: AT&T-IS, Orlando, FL
Lines: 22

in article <1293@ur-tut.UUCP>, akk2@ur-tut.UUCP says:
> Keywords: DOS
> 
> Inserted a floppy in drive A, which had a write protect tab
> on it. Changed the default drive to A> from C>. Then
> typed     
> A>  TYPE filename.ext | MORE
> and I got an error message  
> Write protect error writing drive A:
> What's going on ?
> Atul Kacker

Under Toynix (MS-DOS) pipes are implemented as temporary files which are
written to the root directory of your currently active disk. They're
usually named something like "%PIPE1.$$$". Try the command line:
dir|sort|more
and you should see two of 'em at the head of the list. The write error
occurred when the system attempted to save your pipe. It probably
won't happen if you issue "dir a:" while logged into "c:" (assuming
c: isn't r/o itself)

Heff