I'm new here, so I hope this is the right place to post.
I recently got a new Dell machine, and it has the option to make a recovery usb drive which can restore the factory image. I made a recovery drive on my 16GB USB drive. I'd like to back it up to a file somehow so I can use the drive for other things.
I tried using dd to dump the entire drive to an image file. Although this worked, it isn't ideal because the recovery data only takes 7GB out of the 16GB on my drive, but if I use dd, the backup uses a full 16GB. Also, I don't think it would be compatible with other size drives (for example if I wanted to use an 8GB drive for recovery.)
If I do something more simple like just copying the files to a backup location, the drive wouldn't be bootable.
Can someone recommend a good way to do this? I would prefer open source/free linux tools to get the job done, but I'm open to others.
Thanks so much!