`fdisk -l` ---for the difference Etxended

hunter_cao7 · 11-28-2007, 02:15 AM

Dear all:
I have a problem don't understand?

For example:

Input1: `fdisk -l`
/dev/sda4 487 1305 3686917+ f Win95 Ext'd (LBA)

Input2: `fdisk -l`
/dev/sda4 781 907 1020096 5 Extended

how about these two Extended (Extension Division) What's the difference between. why sometimes "Win95" Extended is installed by default, sometimes it's "83" Extened?
tks.

jschiwal · 11-28-2007, 02:20 AM

It would help if you posted the full list: "sudo /sbin/fdisk -l /dev/sda" and posted the results in a code block to preserve whitespace.

How were the two created? What is the actual problem?

hunter_cao7 · 11-28-2007, 02:46 AM

tks,
when i installed the system, sometimes default extension for the district is "linux 83", sometimes is "Win95" both formats.

If I encountered System "Win95" format of the expansion area, and logic Partition more than four, I will be the it replaced 'linux 83'.
so i don't know whether there are other differences?

the same system version, twice installation.？？？

Code:

[root@Host1 root]# fdisk -l

Disk /dev/sda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sda1   *         1        16    128488+  83  Linux
/dev/sda2            17       781   6144862+  83  Linux
/dev/sda3           782       846    522112+  82  Linux swap
/dev/sda4           847      1305   3686917+   f  Win95 Ext'd (LBA)
/dev/sda5           847      1037   1534176   83  Linux
/dev/sda6          1038      1228   1534176   83  Linux
-------------------------------------------------------------------
[root@Host2 root]# fdisk -l

Disk /dev/sda: 15.0 GB, 15021899776 bytes
255 heads, 63 sectors/track, 1826 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sda1   *         1        16    128488+  83  Linux
/dev/sda2            17       526   4096575   83  Linux
/dev/sda3           527       781   2048287+  82  Linux swap
/dev/sda4           782      1826   8393962+   5  Extended
/dev/sda5           782       972   1534176   83  Linux
/dev/sda6           973      1163   1534176   83  Linux
/dev/sda7          1164      1826   5325516   83  Linux

jschiwal · 11-28-2007, 03:30 AM

Listing One looks normal. The extended partition contains the Linux partitions.

Listing Two looks bad. Type "5" is a dos/early windows partioning type. That doesn't sound correct.

reference:
http://www.win.tue.nl/~aeb/partition...n_types-1.html

Quote:

05 DOS 3.3+ Extended Partition

Supports at most 8.4 GB disks: with type 05 DOS/Windows will not use the extended BIOS call, even if it is available. See type 0f below. Using type 05 for extended partitions beyond 8 GB may lead to data corruption with MSDOS.

An extended partition is a box containing a linked list of logical partitions. This chain (linked list) can have arbitrary length, but some FDISK versions refuse to make more logical partitions than there are drive letters available (e.g. MS-DOS LASTDRIVE=26 is good for at most 24 disk partitions; Novell DOS 7+ allows LASTDRIVE=32).

You may be able to simply change the type with fdisk. Does this system work?

hunter_cao7 · 11-28-2007, 03:50 AM

Thanks very much.

hunter_cao7 · 11-28-2007, 04:07 AM

[QUOTE=jschiwal;

You may be able to simply change the type with fdisk. Does this system work?[/QUOTE]
yes, this system is working..
The linux '85'Extended was supported logical partitions >4
tks.