Less space with UFS

Simon L. Nielsen simon at FreeBSD.org
Sun Aug 8 14:12:46 PDT 2004

On 2004.08.08 12:59:33 -0700, Austin Wilson wrote:

> But
> once I have reformatted one of my FAT32 partitions to UFS I seem to not have
> the same amount of space as I had with my FAT32 partition. I look the df -h
> out put and it shows that I have a 63 gig hard dive, but only total 57 gigs
> free and used space useable. I am wondering where the 6 gigs that I had went
> to?

To quote the FAQ [1] :

	A portion of each UFS partition (8%, by default) is reserved for use
	by the operating system and the root user. df(1) does not count that
	space when calculating the Capacity column, so it can exceed
	100%. Also, you'll notice that the Blocks column is always greater
	than the sum of the Used and Avail columns, usually by a
	factor of 8%.

	For more details, look up the -m option in tunefs(8)

[1] http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/disks.html#DISK-MORE-THAN-FULL

BTW. questions like this is best suited for the freebsd-questions@
mailing list.

Simon L. Nielsen
FreeBSD Documentation Team
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