Ubuntu

what is empty partition?

Asked by Novid

hello man , I have 2 hard drive with 500 GB volume . the second hard derive is partitioning with ubuntu installer (live karmic) .
I create 3 partition on my second hard. One for home and one partition for the root and third for Swap but the output command sfdisk get wrong!!

erghezi@erghezi-desktop:~$ sudo sfdisk -l

Disk /dev/sda: 60801 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start End #cyls #blocks Id System
/dev/sda1 * 0+ 8511 8512- 68372608+ 7 HPFS/NTFS
/dev/sda2 8512 60800 52289 420011392+ 5 Extended
/dev/sda3 0 - 0 0 0 Empty
/dev/sda4 0 - 0 0 0 Empty
/dev/sda5 8512+ 22535- 14024- 112640000 7 HPFS/NTFS
/dev/sda6 22535+ 35283- 12749- 102400000 7 HPFS/NTFS
/dev/sda7 35283+ 48113- 12831- 103058432 7 HPFS/NTFS
/dev/sda8 48114+ 60800 12687- 101908296 7 HPFS/NTFS

Disk /dev/sdb: 60801 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 84 85- 682731 82 Linux swap / Solaris
/dev/sdb2 85 60800 60716 487701270 5 Extended
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
/dev/sdb5 85+ 1908 1824- 14651248+ 83 Linux
/dev/sdb6 1909+ 60800 58892- 473049958+ 83 Linux

I see two Empty partition after Extended! (sdb3 and sdb4) . what is Empty partition!?I think so home partition must be sdb4 not sdb6! and root partition must be sdb3 not sdb5!

of course Palimpsest program show my second hard drive ( that I bought new it) has a bad sector!

http://img2.tinypic.info/viewer.php?file=hgcyiwku5bmqpggkdex3.png

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This question was originally filed as bug #429279.

Revision history for this message
Neil Perry (nperry) said : 		#1

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We appreciate the difficulties you are facing, but it would make more sense to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs. For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs.

Revision history for this message
Novid (novid) said : 		#2

oh man, thx for to attention me! plz see my new hard disk!

http://img2.tinypic.info/viewer.php?file=wi3bhwfkdlqlcrmq0faf.png

the status is changed to red alert from yellow !

i check my hard with a program(for repair bad sector) on flash . but there are not any bad sector on my hard !

Revision history for this message
Ralph Janke (txwikinger) said : 		#3

You can have 4 primary partitions. Any further partitions need to be extended partitions. Therefore the empty partitions are somewhat placeholder for the primary partitions that could still be used.

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