Date: Sun, 10 Jun 2001 12:15:19 +1200 From: "Juha Saarinen" <juha@saarinen.org> To: "Freebsd-Stable@Freebsd. Org" <freebsd-stable@freebsd.org> Subject: Disk geometry oddity Message-ID: <00d601c0f142$6f5a0540$0a01a8c0@den2>
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I'm in the process of removing a concatenated vinum volume, consisting
of a partition/slice on da0 plus the entire da1. The two drives are 36GB
SCSI.
I removed the vinum configuration with 'vinum resetconfig' and then just
created a new partition etc. on da1 and mounted it. Then I wanted to
reclaim the rest of the unused disk space on da0 (about 18GB) with
/stand/sysinstall, but got this warning that I haven't seen before.
lqqqqqqqqqqqqqqqqqqqqqqqqqqqq Message
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
xWARNING: A geometry of 99565/40/18 for da0 is
incorrect. Using x
xa more likely geometry. If this geometry is
incorrect or you x
xare unsure as to whether or not it's correct,
please consult x
xthe Hardware Guide in the Documentation submenu or
use the x
x(G)eometry command to change it now.
x
x
x
xRemember: you need to enter whatever your BIOS
thinks the x
xgeometry is! For IDE, it's what you were told in
the BIOS x
xsetup. For SCSI, it's the translation mode your
controller is x
xusing. Do NOT use a ``physical geometry''.
x
tqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq(100%)qqu
x [ OK ]
x
mqqqqqqqqqqqqqqqqqqq[ Press enter to continue
]qqqqqqqqqqqqqqqqqqqqj
Fdisk says:
Disk name: da0 FDISK Partition
Editor
DISK Geometry: 4462 cyls/255 heads/63 sectors = 71682030 sectors
(35000MB)
Offset Size(ST) End Name PType Desc Subtype
Flags
0 71687340 71687339 da0s1 3 freebsd 165
C
Which is presumably the "more likely geometry". The amount of sectors in
the warning message works out as 71,686,800 which is 4,770 more than
what fdisk thinks.
I don't get warning message with da1, however.
Is this a side-effect of "dangerously dedicated mode"? I'm hesitant to
make any changes to the partition table of da0 at this stage.
If this is described in a FAQ/How-To/mailing list archive somewhere,
apologies and please direct me to the right place... :-)
Cheers,
-- Juha
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