Date: Mon, 16 Jun 2003 10:58:54 +0930 From: Brian Astill <bastill@adam.com.au> To: Andy Farkas <andyf@speednet.com.au> Cc: freebsd-questions@freebsd.org Subject: Re: Can't mount ad0s2 - sourced Message-ID: <200306141625.50797.bastill@adam.com.au> In-Reply-To: <20030519151603.J93323-100000@hewey.af.speednet.com.au> References: <20030519151603.J93323-100000@hewey.af.speednet.com.au>
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On Mon, 19 May 2003 02:52 pm, Andy Farkas wrote:
> > > Sure there is [a solution]. Show us what fdisk and disklabel say.
referring to my being unable to access ad0s2 from FBSD.
The drive is partitioned DOS-DOS-FBSD.
If I set up the partitions Primary1-Primary2-Primary3, WinNT "hides"
Primary2, and I have to "unhide" using Partition Magic every time I
boot into that hateful OS. However, I CAN acess Primary2 from FBSD.
If I set up the partitions Primary1-Logical1-Primary2, WinNT is happy,
but Logical1 cannot be mounted by FBSD.
herewith details of the latter case:
As you can see, fdisk can see the extended partition, but not the
logical partition inside it. (tho' windoze is happy)
#fdisk /dev/ad0
******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=1027 heads=255 sectors/track=63 (16065 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=1027 heads=255 sectors/track=63 (16065 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 6,(Primary 'big' DOS (> 32MB))
start 63, size 2056257 (1004 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 127/ head 254/ sector 63
The data for partition 2 is:
sysid 5,(Extended DOS)
start 2056320, size 2088450 (1019 Meg), flag 0
beg: cyl 128/ head 0/ sector 1;
end: cyl 257/ head 254/ sector 63
The data for partition 3 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 4144770, size 12353985 (6032 Meg), flag 0
beg: cyl 258/ head 0/ sector 1;
end: cyl 1023/ head 254/ sector 63
The data for partition 4 is:
<UNUSED>
#disklabel /dev/ad0
# /dev/ad0:
type: unknown
disk: amnesiac
label: fictitious
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 1027
sectors/unit: 16514064
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 16514064 0 unused 0 0 # (Cyl. 0 -
1027*)
--
Regards,
Brian
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