如题 好好的 重启之后忽然出现invalid partition table ，我的本本是双系统。新本本才买一个月.系统是win7和ubuntu，今天刚装完u的显卡驱动然后重启，，，就出现了这个问题。我用win7启动光盘直接修复是否就可以了？这个应该不是分区表坏了吧？只是mbr的问题吧？我的grub是写入mbr的.我的分区是 sda1sda2是ubuntu的根分区和交换分区，sda3是win7分区，都是主分区

看看分区表有什么问题。

这个我无法进入系统呢，

嗯 知道了 用livecd进入 谢谢楼上啊 我发现你真是硬盘大神啊

我只能明天了 我u盘不在这。嗯 谢谢楼上 呵呵 硬盘问题神级别的人，对了 神 我还拍了硬盘smart的照片我感觉有些不正常，所以想给你 那天进入系统了 我给你啊 嗯 今天的情况是grub没出现，谢谢啦啊

billbear的帖子大家不愿意看，我只好水贴了。

发个链接 我看 啊 求不得呢 我巴不得有学习资料

神 在吗 我进去了 提示我有问题 i另外帮我分析下这图片的SMART是什么意思
[email protected]:~$ sudo fdisk -lu

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003b195

Device Boot Start End Blocks Id System
/dev/sda1 2048 39063551 19530752 83 Linux
/dev/sda2 39063552 48742399 4839424 82 Linux swap / Solaris
/dev/sda3 * 48742400 87803903 19530752 7 HPFS/NTFS/exFAT
/dev/sda4 87805950 976771071 444482561 5 Extended
/dev/sda5 87805952 185460735 48827392 b W95 FAT32
/dev/sda6 185462784 976771071 395654144 83 Linux

Disk /dev/sdb: 2001 MB, 2001731584 bytes
62 heads, 62 sectors/track, 1017 cylinders, total 3909632 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x20ac7dda

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

Device Boot Start End Blocks Id System
/dev/sdb1 ? 3224498923 3657370039 216435558+ 7 HPFS/NTFS/exFAT
/dev/sdb2 ? 3272020941 930513678 976730017 16 Hidden FAT16
/dev/sdb3 ? 0 0 0 6f Unknown
/dev/sdb4 50200576 974536369 462167897 0 Empty

Partition table entries are not in disk order
[email protected]:~$ sudo parted /dev/sda print
Model: ATA ST9500325AS (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags
1 1049kB 20.0GB 20.0GB primary ext4
2 20.0GB 25.0GB 4956MB primary linux-swap(v1)
3 25.0GB 45.0GB 20.0GB primary ntfs boot
4 45.0GB 500GB 455GB extended
5 45.0GB 95.0GB 50.0GB logical fat32
6 95.0GB 500GB 405GB logical ext4

SMATR 图片如下

Disk /dev/sdb: 2001 MB, 2001731584 bytes
62 heads, 62 sectors/track, 1017 cylinders, total 3909632 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x20ac7dda

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

Device Boot Start End Blocks Id System
/dev/sdb1 ? 3224498923 3657370039 216435558+ 7 HPFS/NTFS/exFAT
/dev/sdb2 ? 3272020941 930513678 976730017 16 Hidden FAT16
/dev/sdb3 ? 0 0 0 6f Unknown
/dev/sdb4 50200576 974536369 462167897 0 Empty


分区表损坏，试试testdisk。

我不是什么大神，就是灌水多些。
无损改变分区大小的分区工具少用。
备份分区表，而不是分区表出现问题再找软件恢复。

sdb是 u盘

恩 谢谢啊 testdisk
The program 'testdisk' is currently not installed. You can install it by typing:
sudo apt-get install testdisk
You will have to enable the component called 'universe'
[email protected]:~$ sudo apt-get install testdisk
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package testdisk
[email protected]:~$ testdisk
The program 'testdisk' is currently not installed. You can install it by typing:
sudo apt-get install testdisk
You will have to enable the component called 'universe'

sda没什么问题。

我觉得sda是不是没什么问题啊 还有啊 神，那个SMART数据值几千万代表什么啊