format slice
Freek Nossin
freeknossin at tiscali.nl
Fri Mar 11 11:53:28 PST 2005
Thank you for your suggestions, I followed them and this is what happened:
pcwin451# fdisk -s
/dev/ad0: 39704 cyl 16 hd 63 sec
Part Start Size Type Flags
1: 63 20820177 0x07 0x00
2: 20820240 19201392 0xa5 0x80
Part 1 is the one I want to convert to a freebsd slice.
Now I used fdisk -f <file> with the input
p 1 0 0 0
the operation succeeded. I did again:
pcwin451# fdisk -s
/dev/ad0: 39704 cyl 16 hd 63 sec
Part Start Size Type Flags
2: 20820240 19201392 0xa5 0x80
And this was indeed the output I expected. So I thought lets see what
sysinstall thinks of all this. Selecting fdisk in the menu showed me a disk
layout where the NTFS partition still was on the disk.
Disk name: ad0 FDISK Partition
Editor
DISK Geometry: 39704 cyls/16 heads/63 sectors = 40021632 sectors (19541MB)
Offset Size(ST) End Name PType Desc Subtype
Flags
0 63 62 - 12 unused 0
63 20820177 20820239 ad0s1 4 NTFS/HPFS/QNX 7
20820240 19201392 40021631 ad0s2 8 freebsd 165
How can this be? I've always assumed that sysinstall uses the fdisk tool?
And which one is "correct"? Is it wise to try creating a new slice with
fdisk?
-----Original Message-----
From: Alejandro Pulver [mailto:alejandro at varnet.biz]
Sent: vrijdag 11 maart 2005 20:15
To: Freek Nossin
Cc: freebsd-questions at freebsd.org
Subject: Re: format slice
On Fri, 11 Mar 2005 17:58:10 +0100
"Freek Nossin" <freeknossin at tiscali.nl> wrote:
> Hello,
>
> I have a freebsd installation on a disk with two slices. One of them
> has the current freebsd install, the other has a win2k installation. I
> want to convert the win2k slice to a freebsd slice (by deleting the
> old one and add a new one). I followed the handbook but when I try to
> delete the win2k slice, and want to write the changes to the disk,
> sysinstall returns "a disk error". The steps I took were simple:
>
> - run sysinstall en select fdisk
> - choose delete on the NTFS slice
> - Write changes
>
> Then sysinstall complains that it cannot do that (no specific
> information on the cause of the error is displayed).
>
> Does anyone know what can be wrong and how can I solve this?
>
>
>
>
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Hello,
Try using 'fdisk' directly (man 8 fdisk) and see the complete error
messages.
For example, to delete the second slice (check the numbering with
'fdisk -s') save the following in a file and then run 'fdisk -f <file>'
(but first try the test mode with the -t flag to see if it works as
expected):
p 2 0 0 0
Best Regards,
Ale
P.S.: what is the output of 'fdisk -s'?
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