At 16:54:36 on Thursday Thursday 01 October 2009, Greg Freemyer
On Thu, Oct 1, 2009 at 10:08 AM, Per Jessen
wrote: Stan Goodman wrote:
At 14:23:39 on Thursday Thursday 01 October 2009, Per Jessen
wrote: Stan Goodman wrote:
as somebody else said, why don't you use YaST installer to do the partitionning?
Among other reasons, because I want to know why the installer has retained partition information that isn't there anymore, and where it is storing obsolete information.
Partition information is stored in the partition tables. When the partitioner finds your old partition scheme it's because it is still stored there.
I don't know dfsee either, I always use fdisk - what does fdisk says when you print the partition table?
I know that the partition tables store the partition scheme. But if I see a certain arrangement, that must be what the partition table is storing.
Exactly.
I think, in fact, that HDs have two copies of the partition table.
Yes, it does.
Are you guys sure about that? Is that a unique Linux thing? Where is the second copy?
It is not a special Linux thing. I don't know where it is or how to use it, but I hope I will soon.
The MBR (master boot record) (which includes the partition table) is normally marked by having AA55 as the last 2 bytes of the sector. That is also used for BR (Boot Records) (which do not have a copy of the partition table). Some filesystems (ie NTFS) have redundant copies of the BR at the end of the partition, but I'm not familiar with redundant copies of the MBR.
note: I assume at this point that yast is keeping a redundant set of partition info somewhere, but I doubt it is in a raw sector which is how I am interpreting the above reference to a second copy.
Greg
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