Windows 7: backing up system iso on usb flash drives question

I have win 7 home premium on one tower and win 7 pro. on another. My question is can I save a system iso of each one on usb flash drives in case of a crash? My home premium c:/ drive shows 445gb. free from 465gb. so would I have to use at least a 20gb. flash drive. I know New Egg has a large selection of flash drives. Thanks for all help. I have a second hd in my pro system I used to save a complete iso backup on it.

p5200, an ISO won't do you much good. You can create an image backup on usb drives, I recommend two for your machines. Also you will need to create a recovery disk or use your original windows 7 disk. create two recovery disks, one for each system and you should be fine.

There are other alternatives that are cheap or free to create images for your machines.

Rich

What I have done is d/l Macrium Reflect FREE Edition - Information and download I have a C and D partition on one HD and on my other HD I have made a E and F. I use the E and F as my image of C and D. Macrium automatically backs up as often as you set the schedule. I do mine once a week. Give it a try.