Re: Disk Usage Incorrect
Re: Disk Usage Incorrect
- Subject: Re: Disk Usage Incorrect
- From: Michael Hogsett <email@hidden>
- Date: Wed, 12 Jan 2005 12:52:07 -0800
Eric Ocean wrote:
I have an approximately 110 GB drive. Both the Finder and the command
line show that I've used all but about 1.2 GB; however, when I add up
the file sizes individually, they only add up to about 62GB. I've tried
determining this using a number of different methods (du,
OmniDiskSweeper, etc.) and they all report ~110GB of used space, and
~62GB of actual space used by the files on my system.
At this point, I don't know how to proceed any further. I either need to
determine what is taking up the remaining 48GB of missing space, or
determine why all of my tools think I'm using 110GB of space.
I've searched far and wide on Google to no avail; perhaps I'm using the
wrong terms.
Best, Eric
P.s. The link is a screenshot (12KB) from OmniDiskSweeper, which clearly
shows the problem: http://www.ampede.com/disk-space.png
I may be speaking out of my rear, but I believe the smallest allocation
block on an HFS partition increases as the size of the partition increases.
On my 80Gbyte disk a 1byte file (yes 1 byte) consumes 4Kbytes. The Finder's
'Get Info' reports '4KB on disk (1 byte)'
If your 110 Gbyte drive contains a large number of small files that is a great
deal of wasted space.
Also note, that this means that a 4097 byte file will consume 8192 bytes
(2 4k disk allocation blocks).
- Mike
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