In most cases, you choose to use the built-in Windows image backup restore tool - Backup and Restore for system image creation. Now, it's your turn to start to back up your computer for Windows 10/8/7. If you have a system image for your computer, you can restore system image from external hard drive, internal hard drive or other devices so as to restore your computer to a normal state. Besides, mistaken operations, sudden power outage, hard drive failure, etc. In other words, a system image is a compressed file including Windows operating system, boot sectors, settings, programs and files saved on those partitions.Īctually, a system image is very important to you for computer protection.Īs you know, the computer is always under the threat of ransomware attacks, like WannaCry and Bad Rabbit in 2017, which can cause data loss. Simply speaking, it refers to an exact copy of partitions which are required for Windows to run. Restore System Image from External Hard Drive FAQ.Suggestion: Clone Disk and Boot from Target Disk.How to Restore System Image from External Hard Drive Windows 10/8/7.