To unzip and restore the backup file, you can use the following steps:

If the backup file was compressed using gzip, you can use the following command to unzip it:

$ gunzip /path/to/destination/mybackup.img.gz

If the backup file was compressed using zip, you can use the following command to unzip it:

$ unzip /path/to/destination/mybackup.img.zip

After unzipping the backup file, you can restore it to the disk partition using dd:

$ dd if=/path/to/destination/mybackup.img of=/dev/sdX

where /dev/sdX is the device name of the partition you want to restore the backup to.

Important: Before restoring the backup, make sure you have the correct device name and destination path, as using the wrong device name may result in data loss.
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