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[bug-fdisk] [FDISK]Partition 1 does not end on cylinder boundary
From: |
Zhang Ji |
Subject: |
[bug-fdisk] [FDISK]Partition 1 does not end on cylinder boundary |
Date: |
Wed, 17 Mar 2010 11:01:17 +0800 |
User-agent: |
Thunderbird 2.0.0.23 (Windows/20090812) |
Dear Sir:
I'm sorry to trouble you!
I'm in a trouble with fdisk and hope you can help me.
Description of problem:
On the same machine,
RHEL6.0Alpha3 system is installed on /dev/sda.
RHEL5.5Beta system is installed on /dev/sdb.
Next The three partitions are distributed when I installed the RHEL6.0Alpha3
system.
On RHEL5.5Beta system(Installed on /dev/sdb), When I type next:
address@hidden ~]# fdisk -V
fdisk (util-linux 2.13-pre7)
address@hidden ~]# fdisk -l
Disk /dev/sda: 73.4 GB, 73407868928 bytes
255 heads, 63 sectors/track, 8924 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 2614 20480000 83 Linux
/dev/sda3 2614 2875 2097152 82 Linux swap / Solaris
...
Now I know the reason of "Partition 1 does not end on cylinder boundary." is
because of the end of sda1 is overlapping with the start of next partition
(sda2).
But from the above display, the end of sda2 is also overlapping with the start
of next
partition (sda3), why it is not give the warning message?
Use fdisk with next option:
address@hidden ~]# fdisk -lu
Disk /dev/sda: 73.4 GB, 73407868928 bytes
255 heads, 63 sectors/track, 8924 cylinders, total 143374744 sectors
Units = sectors of 1 * 512 = 512 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 63 1024062 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 1024063 41984062 20480000 83 Linux
/dev/sda3 41984063 46178366 2097152 82 Linux swap / Solaris
----------------------------------------
address@hidden ~]# fdisk /dev/sda
...
Command (m for help): x
Expert command (m for help): p
Disk /dev/sda: 255 heads, 63 sectors, 8924 cylinders
Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID
1 80 1 1 0 189 61 63 63 1024000 83
Partition 1 does not end on cylinder boundary.
2 00 189 62 63 254 63 1023 1024063 40960000 83
3 00 254 63 1023 254 63 1023 41984063 4194304 82
4 00 0 0 0 0 0 0 0 0 00
>From the fdsik expert command display, I know the sda1 with end Head 189(and
>end Sector 61),
so the fdisk give the WARNING message.
The sda2 with end Head 254 and end Sector 63, and with no WARNING message, but
the
end Cylinder of sda2 was overlapping with the start Cylinder of sda3.
Generally speeaking, if the Cylinder is overlapping, Partition 2 should also
not end
on cylinder boundary and should give the WARNING message.
But here is not. It is confused me.
Would you lend me a hand?
I'm looking forward to your reply.
Thanks all!
- [bug-fdisk] [FDISK]Partition 1 does not end on cylinder boundary,
Zhang Ji <=