光盘安装 ubuntu 9.10 只能看到整个硬盘而无法看到分区

[lucien.zheng]

ubuntu@ubuntu:~$ sudo 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: 0x0876e30a

Device Boot Start End Blocks Id System
/dev/sda1 1 1 992+ 42 SFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 * 1 13 102400 42 SFS
Partition 2 does not end on cylinder boundary.
/dev/sda3 13 7833 62811136 42 SFS
Partition 3 does not end on cylinder boundary.
/dev/sda4 7833 38914 249655640 42 SFS
Partition 4 does not end on cylinder boundary.


ubuntu@ubuntu:~$ sudo 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: 0x0876e30a

Device Boot Start End Blocks Id System
/dev/sda1 1 1 992+ 42 SFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 * 1 13 102400 42 SFS
Partition 2 does not end on cylinder boundary.
/dev/sda3 13 7833 62811136 42 SFS
Partition 3 does not end on cylinder boundary.
/dev/sda4 7833 38914 249655640 42 SFS
Partition 4 does not end on cylinder boundary.
如何解决 ?