Just posting this at MDL in case it may be helpful for anyone else... Up until recently I've been delighted with the results obtained using Systemback - but I made a change that messed up my uses of it - I added a 2nd HDD for data storage only. I could have just migrated the whole thing, system & data to a larger HDD, but it would have created the same bottleneck because Systemback just grabs...everything - and that would make for a gigantic result, which I do not need or want. So instead... I made a slight mod - removed the blocker from an unused full sized drive bay & added another SATA cable, then stuck that as well as a power cable right out in front - and then... Plugged on an identically sized (as my main HDD) blank drive externally, then restart with my Ventoy stick that has my older, bootable Linux based version of Minitool Partition Wizard. (That direct SATA connection is way faster than any USB connection.) Tell it to copy my main drive to the spare, then settle down to read a book for a while. ~20 minutes later it is done, shut it down - unplug the cloned drive - restart as usual. Plugging the clone onto my play box had it up & running in just minutes, exactly as I desired minus the added data drive mounts. Side note: Every so often when I've cloned different Linux systems via any method, the clone drive needs a little help to start, and for those times I use the same Ventoy stick & the Boot Repair Disk ISO which fixes it in about a minute. Hope that info is useful for anyone.