Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!usc!apple!bbn!bbn.com!slackey
From: slackey@bbn.com (Stan Lackey)
Newsgroups: comp.sys.atari.8bit
Subject: DOS XE File Formats
Message-ID: <42843@bbn.COM>
Date: 17 Jul 89 18:08:29 GMT
Sender: news@bbn.COM
Reply-To: slackey@BBN.COM (Stan Lackey)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 13

Me again, with my usual barrage of questions...

I am trying to reclaim files from a damaged DOS XE disk.  I am having
difficulty understanding the formats, though.

According to the manual, a directory entry contains up to 12 pointers
to file map sectors.  File map sectors contain up to 125 pointers to
data sectors.  Data sectors contain up to 250 bytes each.  So, by
my calculations, the maximum size of one file is 12x125x250 bytes, or
375K bytes.  However, the manual claims that the max size of a file
is 8M bytes.  What's the deal?

-Stan