Re: Floating disk geometry

2009-07-01 Thread Sergey Yudin
Please can someone tell why disk geometry changed after install in installation time on empty sd0: Disk: sd0 geometry: 78753/2/911 [143638992 Sectors] Offset: 0 Signature: 0x0 Starting Ending LBA Info: #: id C H S - C H S [ start:

Re: Floating disk geometry

2009-07-01 Thread Rod Whitworth
On Wed, 01 Jul 2009 12:26:30 +0600, Sergey Yudin wrote: no it is not a garbage.. It's just zero filled disk. Geometry detection process uses info from preexisting partition table? And the zero fill included the MBR making it garbage. *** NOTE *** Please DO NOT CC me. I am subscribed to the

Re: Floating disk geometry

2009-07-01 Thread Sergey Yudin
How to understand in installation time which geometry is correct for curent disk? What is the starting point for calculations? Number of sectors? In which case, if you want to set it right, your best bet is to say 'No' to letting OpenBSD use the whole disk, then setting the correct geometry by

Re: Floating disk geometry

2009-07-01 Thread Sergey Yudin
no it is not a garbage.. It's just zero filled disk. Geometry detection process uses info from preexisting partition table? And the zero fill included the MBR making it garbage. so we must prepare MBR with 3rd party tools before OpenBSD installation?

Re: Floating disk geometry

2009-07-01 Thread Otto Moerbeek
On Wed, Jul 01, 2009 at 12:46:45PM +0600, Sergey Yudin wrote: How to understand in installation time which geometry is correct for curent disk? What is the starting point for calculations? Number of sectors? In some cases thedisk is queried, and in other cases not. But geomtery is largely

Re: Floating disk geometry

2009-07-01 Thread Otto Moerbeek
On Wed, Jul 01, 2009 at 12:55:31PM +0600, Sergey Yudin wrote: no it is not a garbage.. It's just zero filled disk. Geometry detection process uses info from preexisting partition table? And the zero fill included the MBR making it garbage. so we must prepare MBR with 3rd party

Re: Floating disk geometry

2009-07-01 Thread Sergey Yudin
no it is not a garbage.. It's just zero filled disk. Geometry detection process uses info from preexisting partition table? And the zero fill included the MBR making it garbage. so we must prepare MBR with 3rd party tools before OpenBSD installation? No, fdisk

Re: Floating disk geometry

2009-07-01 Thread Otto Moerbeek
On Wed, Jul 01, 2009 at 02:42:00PM +0600, Sergey Yudin wrote: no it is not a garbage.. It's just zero filled disk. Geometry detection process uses info from preexisting partition table? And the zero fill included the MBR making it garbage. so we must prepare MBR

Re: Floating disk geometry

2009-07-01 Thread Eric Furman
You had crap and then OBSD fixed it. It is as simple as that. On Wed, 1 Jul 2009 07:49:29 +0200, Otto Moerbeek o...@drijf.net said: On Wed, Jul 01, 2009 at 11:03:20AM +0600, Sergey Yudin wrote: Please can someone tell why disk geometry changed after install in installation time on empty

Re: Floating disk geometry

2009-07-01 Thread Sergey Yudin
1. zero filled disk is not a crap, its just empty and nothing to fix there :-) zero disks just need NEW CORRECT info to be placed on them 2. If it is crap, why this crappy information used for partitioning ? You had crap and then OBSD fixed it. It is as simple as that. Please can someone

Floating disk geometry

2009-06-30 Thread Sergey Yudin
Please can someone tell why disk geometry changed after install in installation time on empty sd0: Disk: sd0 geometry: 78753/2/911 [143638992 Sectors] Offset: 0 Signature: 0x0 Starting Ending LBA Info: #: id C H S - C H S [ start:

Re: Floating disk geometry

2009-06-30 Thread Tony Abernethy
Sergey Yudin wrote: Please can someone tell why disk geometry changed after install in installation time on empty sd0: Disk: sd0 geometry: 78753/2/911 [143638992 Sectors] I don't know what that is, or where it came from, but I don't think any 80386-type pc-BIOS could handle that

Re: Floating disk geometry

2009-06-30 Thread Otto Moerbeek
On Wed, Jul 01, 2009 at 11:03:20AM +0600, Sergey Yudin wrote: Please can someone tell why disk geometry changed after install in installation time on empty sd0: Disk: sd0 geometry: 78753/2/911 [143638992 Sectors] Offset: 0 Signature: 0x0 Starting Ending