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- Newsgroups: aus.mac
- Path: sparky!uunet!munnari.oz.au!cs.mu.OZ.AU!mriddle.insted.unimelb.edu.au!matthew_riddle.pharmacology
- From: Matt Riddle <matthew_riddle.pharmacology@muwayf.unimelb.edu.au>
- Subject: Re: Hard drives & file space
- Message-ID: <9235912.766@mulga.cs.mu.OZ.AU>
- X-Xxmessage-Id: <A75F59B29E029C32@mriddle.insted.unimelb.edu.au>
- X-Xxdate: Thu, 24 Dec 92 20: 12:34 GMT
- Sender: news@cs.mu.OZ.AU
- Organization: Science Mutimedia, University of Melbourne
- X-Useragent: Nuntius v1.1.1d12
- References: <9235813.2960@mulga.cs.mu.OZ.AU>
- Date: Thu, 24 Dec 1992 01:10:16 GMT
- Lines: 34
-
- In article <9235813.2960@mulga.cs.mu.OZ.AU> Matt Riddle,
- matthew_riddle.pharmacology@muwayf.unimelb.edu.au writes:
- >I have encountered an unexpected anomaly when using a large capacity hard
- >drive. Inve noticed that files using less than 16K actually always take
- >up exactly 16K of disk space. Also, larger files tend to take a lot more
- >room on the big drive than elsewhere. I wonder if anyone has a simple
- >reason or solution to offer?
- > I imagine there is some overhead with respect to directory information,
- >perhaps, or am I barking up the wrong tree?
-
- I received 3 replies to the above querie. Thanks to r.exner@trl.oz.au,
- Joe Miles, and Martin Gleeson. r.exners response sums up what they all
- said:
-
- From r.exner:
- A Mac partition can hold only 65536 blocks. So the bigger the disk the
- bigger the bytes per block. A 32M (or smaller) partition has blocks of 512
- bytes. A partition greater than 65536 x 8K (= 500MB) will need 16K blocks,
- so the smallest disk file will require 16K.
-
- The solution: partition a big disk into a number of smaller partitions.
-
- Thanks again, and Merry Christmas to one & all!
-
- Matt
-
-
- ______________________________________________________________________
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