For these cases you can use ODIN. This application is very easy to use, all you'll need to do is to select the drive that you want to create the backup of, establish where the disc image will be stored and click on “Start” so that ODIN can create the backup.
ODIN also includes a small selection of options that can have direct impact on the backup, like the possibility to write only the blocks that contain information, to compress the data so that it occupies a lot less space or to divide the disc image into several smaller files.
Therefore, if you want to create a backup of your data in the most simple way, why not download and install ODIN, and you'll see how easy it is.
We'd love to hear from you. Do you want to give us your opinion?