Date: Mon, 3 Jun 2002 13:34:36 -0700 From: "Drew Tomlinson" <drew@mykitchentable.net> To: <questions@freebsd.org> Subject: Drive Space - Am I Getting All I Should? Message-ID: <003101c20b3e$13a0d320$0301a8c0@bigdaddy>
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I added a 80G IDE drive to my 4.5 machine. I used /stand/sysinstall
to FDisk and Label the drive. Now after mounting, df -h shows:
Filesystem Size Used Avail Capacity Mounted on
/dev/ad0s1e 72G 1.0K 66G 0% /ftp
dmesg shows the drive as 76319M so 72G seems reasonable:
ad0: 76319MB <GENERIC GENERIC> [155061/16/63] at ata0-master UDMA33
The /stand/sysinstall disklabel editor sees it as the same size:
Part Mount Size Newfs Part Mount Size
Newfs
---- ----- ---- ----- ---- ----- ---- -
----
ad0s1e /ftp 76319MB UFS Y
But the FDISK partition editor sees the drive geometry differently
than dmesg:
Disk name: ad0 FDISK Partition
Editor
DISK Geometry: 30629 cyls/81 heads/63 sectors = 156299787 sectors
Offset Size End Name PType Desc Subtype
Flags
0 156301488 156301487 ad0s1 3 freebsd 165
C>
So how come df -h only shows 66G available? Where's the other 6G? Is
this some limitation of FBSD or my system BIOS? As an experiment, I
split the drive into two slices but got about the same result as shown
below:
Filesystem Size Used Avail Capacity Mounted on
/dev/ad0s1e 39G 1.0K 36G 0% /ftp
/dev/ad0s2e 33G 1.0K 31G 0% /ftp2
Can anyone explain what's going on here?
Thanks,
Drew
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