Problem partitioning dual-boot
Holger Parplies
wfai at parplies.de
Tue Sep 20 05:09:09 CEST 2011
Hi,
I can't really help you with your issue, but a few things do strike me as
strange:
John G. Heim wrote on 2011-09-19 17:11:38 -0500 [Re: Problem partitioning dual-boot]:
> [...]
> One thing that I've noticed... Sda1 ends on block 5100 and sba2 also begins
> on 5100. That can't be right, can it?
> [...]
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 5100 40960000 7 HPFS/NTFS
For all I can figure out, your Windoze partition does not seem to end on a
cylinder boundary (though in my experience, fdisk tends to print a warning if
this is the case). I could imagine this could lead to a second partition being
created starting on the same cylinder. Whether or not this would confuse
Windoze 7, I couldn't begin to guess. Note, though, that this already seemed
to be the case before the FAI installation:
> ==========
> Fdisk before FAI install
> ==========
> Disk /dev/sda: 160.0 GB, 160000000000 bytes
> 255 heads, 63 sectors/track, 19452 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disk identifier: 0xc19e4136
>
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 5100 40960000 7 HPFS/NTFS
> /dev/sda2 5100 19452 115287040 7 HPFS/NTFS
At this point, you seem to have 2 NTFS partitions, of which your FAI
installation deletes the second (but then, the manual Debian installation
probably does, too).
> My disk_config file:
> disk_config disk1 preserve_always:1 bootable:1
> primary /windows 0- ntfs rw
> logical swap 1500M swap rw
> logical / 30G- ext3 rw createopts="-m 5" tuneopts="-c 0 -i
> 0"
Not problem-related, but out of curiosity: why do you use logical partitions
instead of primary, even though you don't need more than 4 partitions in
total?
I hope someone else has more insight into what might be causing your problem.
Regards,
Holger
P.S.: I was first wondering about the disk size being slightly larger than
what the disk geometry indicates, but I've found this to be the case
on any disk I can currently run 'fdisk' on. Does anyone know why this
is so?
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