Harddrive size being reported incorrectly?
jerrymc at clunix.cl.msu.edu
Thu Dec 29 13:34:38 PST 2005
> On Thursday 29 December 2005 12:22 pm, Jerry McAllister wrote:
> > > Now, I understand that harddrive manufacturers measure things differently
> > > (1000kbytes per gbyte rather than 1024, or something like that) than
> > > expected, but I've been told by a few people that I should be getting
> > > around 305-312GB of available space after the drive has been formatted.
> > They didn't do their arithmetic.
> > When you slice and partition the drive, there will likely be a handful
> > of sectors that don't round out to an even value so those are dropped.
> > Then, when you do the newfs, some space is taken by the spare superblocks
> > and finally the system reserves 8%. So, I would say you are getting
> > it all.
> 289GB is before the 8% reservation. I actually turned that off with tunefs.
I strongly suggest you do not do that - at least completely off.
Reduce it some, if you like, but keep some.
> Thanks to all who responded so quickly, makes me feel better about filling the
> drive up. Wanted to verify this before using the drive as to not end up
> having to re-newfs it in the future to gain back any possible unused space.
> Travis Poppe
> IRC: tlp @ irc.freenode.net
> freebsd-questions at freebsd.org mailing list
> To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"
More information about the freebsd-questions