各位大侠帮助（硬盘问题）-红联Linux系统门户

我的硬盘是80G分区如下，c（20G） d（10G） e(10G) f(20G) h(18G) 和一个linux交换区(2G)，linux装在h盘。
今天早上使用命令# dd if=/dev/sdb of=/dev/sda6 conv=noerror,sync bs=4k
想把优盘数据备份到e盘（优盘2G）
之后在x window下看到的e盘为2G,以前的数据没了。
[root@localhost /]# df -lh
文件系统容量已用可用已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
15G 7.5G 6.3G 55% /
/dev/sda8 190M 19M 162M 11% /boot
tmpfs 1.3G 60K 1.3G 1% /dev/shm
/dev/sda1 19G 11G 7.9G 58% /media/系统盘
/dev/sda7 20G 11G 9.4G 53% /media/disk
/dev/sda5 9.8G 7.8G 2.1G 79% /media/个人文件
/dev/sda6 2.0G 20M 1.9G 1% /media/disk-1
/dev/sdb 2.0G 20M 1.9G 1% /media/disk-2
[root@localhost /]# /sbin/fdisk -l

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x4cb44cb3

Device Boot Start End Blocks Id System
/dev/sda1 * 1 2423 19462716 7 HPFS/NTFS
/dev/sda2 2424 9729 58685445 f W95 Ext'd (LBA)
/dev/sda5 2424 3698 10241406 7 HPFS/NTFS
/dev/sda6 3699 4973 10241406 7 HPFS/NTFS
/dev/sda7 4974 7523 20482843+ b W95 FAT32
/dev/sda8 7524 7548 200781 83 Linux
/dev/sda9 7549 9729 17518851 8e Linux LVM

Disk /dev/dm-0: 15.8 GB, 15804137472 bytes
255 heads, 63 sectors/track, 1921 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 2080 MB, 2080374784 bytes
255 heads, 63 sectors/track, 252 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x30307800

Disk /dev/dm-1 doesn't contain a valid partition table

Disk /dev/sdb: 2059 MB, 2059403264 bytes
64 heads, 62 sectors/track, 1013 cylinders
Units = cylinders of 3968 * 512 = 2031616 bytes
Disk identifier: 0x6f20736b

This doesn't look like a partition table
Probably you selected the wrong device.

Device Boot Start End Blocks Id System
/dev/sdb1 ? 196103 483782 570754815+ 72 Unknown
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(357, 116, 40) logical=(196102, 51, 11)
Partition 1 has different physical/logical endings:
phys=(357, 32, 45) logical=(483781, 40, 51)
Partition 1 does not end on cylinder boundary.
/dev/sdb2 ? 42513 530423 968014120 65 Novell Netware 386
Partition 2 has different physical/logical beginnings (non-Linux?):
phys=(288, 115, 43) logical=(42512, 30, 47)
Partition 2 has different physical/logical endings:
phys=(367, 114, 50) logical=(530422, 52, 42)
Partition 2 does not end on cylinder boundary.
/dev/sdb3 ? 471241 959151 968014096 79 Unknown
Partition 3 has different physical/logical beginnings (non-Linux?):
phys=(366, 32, 33) logical=(471240, 18, 30)
Partition 3 has different physical/logical endings:
phys=(357, 32, 43) logical=(959150, 39, 39)
Partition 3 does not end on cylinder boundary.
/dev/sdb4 ? 727239 727253 27749+ d Unknown
Partition 4 has different physical/logical beginnings (non-Linux?):
phys=(372, 97, 50) logical=(727238, 12, 25)
Partition 4 has different physical/logical endings:
phys=(0, 10, 0) logical=(727252, 11, 33)
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order
[root@localhost /]# /sbin/fdisk -l /dev/sda6

Disk /dev/sda6: 10.4 GB, 10487199744 bytes
255 heads, 63 sectors/track, 1274 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x6f20736b

This doesn't look like a partition table
Probably you selected the wrong device.

Device Boot Start End Blocks Id System
/dev/sda6p1 ? 48437 119493 570754815+ 72 Unknown
Partition 1 does not end on cylinder boundary.
/dev/sda6p2 ? 10501 131013 968014120 65 Novell Netware 386
Partition 2 does not end on cylinder boundary.
/dev/sda6p3 ? 116395 236907 968014096 79 Unknown
Partition 3 does not end on cylinder boundary.
/dev/sda6p4 ? 179626 179629 27749+ d Unknown
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order

在xp下显示e盘为2G，用pm查看显示以前e盘变为未指定分区。但是分区后挂在不成功显示有指定区域为多个分区或多个系统。。所有
莫名的失去了8G的容量，给为高手我怎么作才能恢复以前的数据并把盘该回去？？

[ 本帖最后由水波于 2008-9-24 17:59 编辑 ]

各位大侠帮助（硬盘问题）

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