Date: Fri, 12 Jan 2001 17:58:16 -0800 (PST) From: Keith Woodman <keith@cydonia.net> To: Bill Moran <wmoran@mail.iowna.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Drive size head scratch Message-ID: <Pine.BSF.4.21.0101121754370.26275-100000@core.cydonia.net> In-Reply-To: <3A5FB314.24C12A23@mail.iowna.com>
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The 26 meg thing was just what he was used to seeing the NT system eat up
away from the drive size. The output of the slice editor was purely for
information purposes so I don't get slamed for not giving enough info. :-)
The info you give about the assuming a percentage for sanity makes good
sense to me. I'll hit the man pages. Thanks..
Keith
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On Fri, 12 Jan 2001, Bill Moran wrote:
> Keith Woodman wrote:
> > A friend of mine has installed a quantum fireball 14Gb IDE drive.
> > After getting it install on his 4.2-stable system it shows a capacity far
> > less than it should.
> >
> > bash-2.04$ df /dev/ad2s1e
> > Filesystem 1K-blocks Used Avail Capacity Mounted on
> > /dev/ad2s1e 14215706 13078445 5 100% /mp3
>
> What are you talking about? You say it "shows a capacity far less than
> it should"? but I see 14G here.
> If you're talking about the math (14G/13G!=100%) then you might want to
> consider that UN*X filesystems assume a percentage of free space always
> avialable so it can work sanely when it does writes (I think this
> defaults to 9% - see the man page for newfs & tunefs)
>
> > 100% full but showing a differance of 1+ Gigs. Any clue on this? He had it
> > in NT this morning and it showed up with about 26 megs missing, he's
> > thinking FreeBSD sucks now and I don't know what to tell him. Here is the
> > output of a disk slice editor
> >
> > DISK Geometry: 1826 cyls/255 heads/63 sectors = 29334690 sectors
> > (14323MB)
> >
> > Offset Size(ST) End Name PType Desc Subtype
> > Flags
> >
> > 0 63 62 - 6 unused 0
> > 63 29334627 29334689 ad2s1 3 freebsd 165 C
> > 29334690 2142 29336831 - 6 unused 0
>
> If you mean about the 30K offset at the beginning of the drive and the
> 1M at the end (which doesn't add up to 26M, so I doubt it) that's a
> function of partitioning the disk to Micros~1 standards, which can't use
> the entire disk. Make it a "dangerously dedicated" disk and it will use
> the whole thing. I'm still not sure what you're talking about with the
> 26M thing, though.
>
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