Originally Posted by homestyle
Is it possible to boot my OS from an external drive?
Let's say I clone my main C drive to an external drive and then at the computer startup, I direct my BIOS to boot from the external drive. Can I run my system of the external drive?
If yes, this would make a case in favor of backing up by cloning instead of imaging.
Your BIOS may have the option of booting from a USB drive. I assume that is the type of external drive you are referring to.
For me, the great thing about using a drive imaging program is that if I have a HDD crash, I just unplug the dead drive and boot from the second drive and it's like nothing ever happened. You get the exact same environment you had the last time you made a duplicate image of your boot drive.
Of course, I never trust any system that has a single point of failure, so I also use two "Backup" applications to make separate copies of my data in two separate locations. I know it sounds paranoid, but I suffered mightily from a DELL system that ate HDDs for breakfast.
It killed three good HDDs before I retired it. I lost some data the first time, never since. But I got tired of having to rebuild the Windows environment every time.