how not to initialize HD
Gregory Hosler
ghosler at redhat.com
Fri Aug 6 11:50:17 UTC 2010
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 08/06/2010 04:49 PM, Michael Schwendt wrote:
> On Fri, 6 Aug 2010 03:55:05 +0000 (UTC), JB wrote:
>
>> JB <jb.123abc <at> yahoo.com> writes:
>>
>> Hi,
>> let me follow the previous post with another example.
>>
>> One more "rule to follow" with regard to partitions:
>> http://www.lissot.net/partition/partition-03.html
>> ...
>> Unlike primary partitions, logical partitions must be contiguous. Each logical
>> partition contains a pointer to the next logical partition, ...
>>
>> OK.
>> Now another example of a disk layout (also Paul Cartwright's, but a different
>> computer - Dell XPS desktops):
>> Btw Paul, is that disk also partitioned by Anaconda tool ?
>>
>> Between partitions 2 and 4 there is a free space marked as "logical".
>>
>> Logical 219463964* 219463964 0 1*Free Space
>> None
>>
>> It is clearly outside of the Extended partition range.
>> How comes it is called "logical" if it violates the rule of contiguousness ?
>
> You might want to examine the cfdisk source code to find out. cfdisk does
> not claim it would be a valid partition. It just prints a partition type
> for the free space, and that already could be a bug. Happens here, too:
>
> First Last
> # Type Sector Sector Offset Length Filesystem Type (ID) Flag
> -- ------- ----------- ----------- ------ ----------- -------------------- ----
> 1 Primary 0 390625* 1# 390626*Linux (83) Boot
> 2 Primary 390626* 781250* 0 390625*Linux (83) None
> 3 Primary 781251* 39062500* 0 38281250*Linux (83) None
> Logical 39062501* 39070079 0 7579*Free Space None
The space immediately above lies between the end of partition 3 and the start of
partition 4 (the extended partition).
It is unused, and *UNUSABLE* space (unusable, due to the fact that it is
*impossible* to map it with a partition id given your current partition layout).
Labeling it as "logical" is, well, not logical, in that it isn't a logical
partition. In fact, it's not a partition at all, as noted by the fact that it
doesn't have a partition id #). Labling it as "void" or "void space" would
probably be a more accurate description of this disk space.
The only way to claim this space would be to backup everything on the disk,
repartition without leaving a "void", and then restore.
- -Greg
> 4 Primary 39070080 976768064 0 937697985 W95 Ext'd (LBA) (0F) None
> 5 Logical 39070080 78124094 63 39054015 Linux (83) None
> 6 Logical 78124095 117194174 63 39070080 Linux (83) None
> 7 Logical 117194175 156248189 63 39054015 Linux (83) None
> 8 Logical 156248190 195318269 63 39070080 Linux (83) None
> 9 Logical 195318270 203125859 63 7807590 Linux swap / So (82) None
> 10 Logical 203125860 976768064 63 773642205 Linux LVM
> (8E) None
>
>
>> # cfdisk -Ps
>> Partition Table for /dev/sda
>>
>> First Last
>> # Type Sector Sector Offset Length Filesystem Type (ID)
>> Flag
>> -- ------- ----------- ----------- ------ ----------- -------------------- ----
>> 1 Primary 0 128519 63 128520 Dell Utility (DE)
>> None
>> 2 Primary 128520 219463963* 0 219335444*HPFS/NTFS (07)
>> Boot
>> Logical 219463964* 219463964 0 1*Free Space
>> None
>> 4 Primary 219463965 615401954 0 395937990 W95 Ext'd (LBA) (0F)
>> None
>> 5 Logical 219463965 223672994 63 4209030 Linux swap / So (82)
>> None
>> 6 Logical 223672995 265618709 63 41945715 Linux (83)
>> Boot
>> 7 Logical 265618710 615401954 63 349783245 Linux (83)
>> None
>> 3 Primary 615401955 625137344 0 9735390 CP/M / CTOS / . (DB)
>> None
>>
>> # fdisk -l
>>
>> Disk /dev/sda: 320.1 GB, 320072933376 bytes
>> 255 heads, 63 sectors/track, 38913 cylinders
>> Units = cylinders of 16065 * 512 = 8225280 bytes
>> Disk identifier: 0xe686f016
>>
>> Device Boot Start End Blocks Id System
>> /dev/sda1 1 8 64228+ de Dell Utility
>> /dev/sda2 * 9 13661 109667722 7 HPFS/NTFS
>> /dev/sda3 38308 38913 4867695 db CP/M / CTOS / ...
>> /dev/sda4 13662 38307 197968995 f W95 Ext'd (LBA)
>> /dev/sda5 13662 13923 2104483+ 82 Linux swap / Solaris
>> /dev/sda6 * 13924 16534 20972826 83 Linux
>> /dev/sda7 16535 38307 174891591 83 Linux
>>
>> JB
>>
>>
- --
+---------------------------------------------------------------------+
Please also check the log file at "/dev/null" for additional information.
(from /var/log/Xorg.setup.log)
| Greg Hosler ghosler at redhat.com |
+---------------------------------------------------------------------+
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/
iEYEARECAAYFAkxb9vcACgkQ404fl/0CV/SyCgCbBfPT0GfnmW0eQ94d4EDeOVRw
qJ8AoLDBJcquSjxdIKS+h9Lk3nrCB97V
=wmO0
-----END PGP SIGNATURE-----
More information about the users
mailing list