Image of a partition
image.dd file is an image of a partition (or an iso file), you can easily loop mount it and read the files. Change directory to where you have the file and mount it.
sudo mkdir /mnt/pt1
sudo mount -o loop image.dd /mnt/pt1
ls -l *
Image of a whole drive
image.dd file is an image of a whole drive (a HDD, SSD, pendrive, memory card), it is possible but more complicated to loop mount a partition. You may succeed with
In this case it is probably easier to restore from the image file to a drive with at least the same size as the original drive from where it was cloned. Please notice that this drive will be overwritten, so all previous data on it will probably disappear.
You can do that with
dd (simple but risky], or with mkusb, which 'wraps a safety belt around
dd' by helping you identify the target drive and giving you a final checkpoint.
In Windows there is Win32DiskImager that can also clone with a final checkpoint.
After restoring you can connect the drive,
- either while running an operating system, and mount the partition(s), browse and read files there,
- or boot from the drive, if it a system that can boot your computer, and get into its partition(s), browse and read files there.