用DD制作全盘镜像

Question

可以使用以下命令运行 ubuntu 来制作完整的磁盘映像：

dd if=/dev/sda of=/image_name

制作完成后，如何在崩溃的系统上恢复该映像？

Answer 1

Boot from the live cd. Mount your destination media to (say) /mnt.

dd if=/dev/sdXXX of=/mnt/mybackup.ddimg

To restore:

dd if=/mnt/mybackup.ddimg of=/dev/sdXXX

The destination drive should be the same size or bigger than the original.

A better way is using tar.

Mount the source to /mnt, mount the destination to /home (say)

tar cvfpz /home/mybackup.tar.gz /mnt

This can then be restored to any size drive:

tar xvfpz /home/mybackup.tar.gz

(After mounting source to /home and destination to /mnt.)

Then just install grub.

Answer 2

除了hatterman 的好答案之外，您还可以gzip像这样压缩图像：

dd if=/dev/sdx | gzip > /mnt/mybackup.ddimg.gz