Use dd AND gzip to export Hard Disk Images

You can save space and time by generating a gzip file. You can add the-9 parameter to gzip. If the bs = 1M parameter is used to determine whether the data will be affected, it is to be evaluated. This time, I will not be greedy for it, but it will be slower to ensure data integrity.

To use dd AND gzip backup, run the following command:# Dd if =/dev/sda1 bs = 1 M | gzip> sda1.dd.gz

During restoration, you can run the following commands:# Gzip-dc bw.office.sled.10.hda1.dd.gz | dd of =/dev/hda1 bs = 1 M