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mneumann
Asked: 2016-07-25 09:25:19 +0800 CST

通过实时 USB 从卷中恢复数据

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这是我的第一篇文章，如果我有任何错误，请多多包涵，并对可能不太漂亮的格式感到抱歉。

我不小心删除了所有内核，现在 Ubuntu 14.04 无法启动（除了 memtest）。我尝试了其他涉及挂载目录和重新安装内核的解决方案，但没有成功 - 所以我决定我应该从主卷中恢复我需要的小数据并完全重新安装 Ubuntu。

我现在的问题是，当我从 live-USB（“尝试 Ubuntu”）启动 Ubuntu 时，我无权查看或复制主卷上的数据。我收到错误消息

无法显示此位置。您没有查看“目录”内容所需的权限。

如何更改主卷的权限以便恢复数据？

奇怪的是，它适用于我上传的一些 .c 文件（这不是真正的程序，而是讲座中的笔记），但它不适用于实际的 C 项目，它甚至不向我显示目录的内容。

sudo fdisk -l返回以下结果：

Disk /dev/sda: 192.0 GB, 192048095232 bytes
255 heads, 63 sectors/track, 23348 cylinders, total 375093936 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: 0x000cbad4

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758   375093247   187295745    5  Extended
/dev/sda5          501760   375093247   187295744   83  Linux

Disk /dev/sdb: 1993 MB, 1993342976 bytes
62 heads, 62 sectors/track, 1012 cylinders, total 3893248 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  5225480974   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

Disk /dev/mapper/luks-e407b6dc-cbb3-4d1d-b5cb-96f98e4b42da: 191.8 GB, 191788744704 bytes
255 heads, 63 sectors/track, 23316 cylinders, total 374587392 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: 0x00000000

Disk /dev/mapper/luks-e407b6dc-cbb3-4d1d-b5cb-96f98e4b42da doesn't contain a valid partition table

Disk /dev/mapper/ubuntu--vg-root: 183.7 GB, 183744069632 bytes
255 heads, 63 sectors/track, 22338 cylinders, total 358875136 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: 0x00000000

Disk /dev/mapper/ubuntu--vg-root doesn't contain a valid partition table

Disk /dev/mapper/ubuntu--vg-swap_1: 8040 MB, 8040480768 bytes
255 heads, 63 sectors/track, 977 cylinders, total 15704064 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: 0x00000000

Disk /dev/mapper/ubuntu--vg-swap_1 doesn't contain a valid partition table
boot

1 个回答

  1. Best Answer

    所以我自己找到了一个解决方案：我在文件浏览器中更改了整个目录的权限（通过右键单击 -> 权限），所以我设法恢复了数据。谢谢你。

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