Indeed, this test was bad...
But the same occurs with an offset of 63 sectors :(
Same with fdisk:
fdisk: 1> edit 3
Starting Ending LBA Info:
#: id C H S - C H S [ start: size ]
------------------------------------------------------------------------
3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
Partition id ('0' to disable) [0 - FF]: [0] (? for help) A6
Do you wish to edit in CHS mode? [n]
offset: [0] 63
size: [0] 488392002
fdisk:*1> q
Writing current MBR to disk.
bash-3.2# fdisk wd1
Disk: wd1 geometry: 30515/255/63 [490234752 Sectors]
Offset: 0 Signature: 0x100
Starting Ending LBA Info:
#: id C H S - C H S [ start: size ]
------------------------------------------------------------------------
0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
Xavier
--
Secret hacker rule #11: hackers read manuals.
On Wed, 2 Jan 2008, Nick Holland wrote:
> Good thing OpenBSD only runs on one platform and one type of computer,
> eh?
>
> Xavier Mertens wrote:
> ..
> >
> > 16 partitions:
> > # size offset fstype [fsize bsize cpg]
> > a: 48195 0 4.2BSD 2048 16384 16
> > c: 490234752 0 unused 0 0
>
> Assuming this is i386 (what people usually assume when they don't
> bother to show dmesg or even mention platform), you need a one
> cylinder offset on your 'a' partition (or more accurately, your
> first partition. TYPICALLY, that's 63 sectors, but not always).
> What you have here clobbers your MBR, which holds your (now hosed)
> fdisk partitions.
>
> see faq4.html.
>
> Nick.
