The best tool for backup in my opinion is Macrium. ($45 us for home user)
They used to have a free version.
When I was employed at that company in Redmond (that shall not be named) we used third party tools to image and back up our drives in one of the test labs.
We found that the backup tools built into the os were not sufficient to do the job.
You need some kind of tool that has a bootable CD that runs independently of the OS.
I believe there are also Linux bootable discs that can be set up for free to do what Macrium does.
They used to have a free version.
When I was employed at that company in Redmond (that shall not be named) we used third party tools to image and back up our drives in one of the test labs.
We found that the backup tools built into the os were not sufficient to do the job.
You need some kind of tool that has a bootable CD that runs independently of the OS.
I believe there are also Linux bootable discs that can be set up for free to do what Macrium does.