PassFab 4EasyPartition uses files from or is developed by Tenorshare. It’s basically a cloning app, requiring both source and destination drives be connected. [When both drives cannot be connected, or when it’s easier to only connect one at a time, use disk / partition image backup software.] The software itself is contained solely in the program’s folder, with 64 new registry entries from installation recorded. Activation is good for 2 PCs. Compared to other apps that can do cloning, the only apparent benefit is an easier GUI. A potential limitation with cloning &/or image backup apps is that not all of them will let you use a destination drive that’s smaller than the original source. I couldn’t find anything on the PassFab 4EasyPartition site saying it could or could not. One way around that limitation is to restore a backup to a VHD [Virtual Hard Disk], then shrink the partition and perform an image backup of that VHD.
The big unknown when transferring the partitions Windows uses to another hard disk / SSD, is if the boot files will work on the new drive. Personally, I’ve had ~50% success – it worked with our AIO & laptop, replacing the conventional drive with a SATA SSD, but failed when I did the same thing with my wife’s PC, and also failed when I added a NVMe drive to this rig. I’ve never had it work with VMs [& I’ve tried several times] and have a roughly 10% success rate with Win2Go drives. It’s possible that this app tries to modify the boot files [BCD] when needed, but I see no indication of that, and the only way I can think of to test that is real world use, e.g., migrating Windows from a conventional hard disk to an NVMe drive, which I can’t easily do right now.
That said, swapping out a hard disk can be hard or easy… part of that depends on what you have to do to physically install the new drive, which can be pretty challenging if you’re working with a laptop, AIO, or tablet. Another part has to do with your installed software, since software DRM may make use of a unique ID associated with the current hard disk / SSD. And finally, you may or may not have problems with the boot files [BCD] if the drive you’re swapping is home to Windows.
Moving your installed software over to another Windows device can be hard or easy as well… There are a few apps, e.g., Laplink, that allegedly can do it for you, but it’s hard if it’s even possible to manage all the DRM. Some software requires deactivation 1st, and if you skip that step, you might be in for a world of hurt.
One bright spot, since Windows 10, moving or copying the copy of Windows you’ve been using to another device can be surprisingly easy, though the same software DRM issues as above apply. If you want to make doubly sure everything’s as it should be, with Windows running on the new device, run Windows setup to do a repair reinstall – that’ll get rid of some garbage, and help to make sure all the needed drivers are in place. Unfortunately booting Windows is where things can go wrong.
If you added a new hard disk / SSD, with the old one still connected, you need to go into the BIOS settings and set the BIOS to look for the boot files on the new drive first. If Windows won’t start or boot on the new drive, you *may* be able to put the BIOS settings back the way they were, start Windows on that original drive, then add Windows on the new drive to the boot menu using the free EasyBCD. If that works, you can get rid of the Windows and recovery partitions on the original drive, using that storage for whatever you want, but keeping the boot partition on the original hard disk intact.
Otherwise, there are tools you can use to try and repair the boot files to get things working. You can try the repair utilities on a bootable USB stick with the setup files for Windows, or you can put just the repair tools on a bootable USB stick using Recovery in Control Panel. Macrium Reflect, Paragon, and a few other partitioning &/or backup apps also include boot repair utilities on their USB sticks, sometimes along with tools for system migration. These tools may or may not work – the only thing that works 100% is to install a fresh copy of Windows. If you had tried to copy your old copy of Windows to a new device, and it didn’t work, restoring a backup you made beforehand is likely your best bet. Note: Working with a VM [Virtual Machine], I have in one case [& only in one case] restored a backup of the Windows partition on the original hard disk to the Windows partition on a hard disk with a freshly installed copy of Win11, & it worked. For the record the two tools that come with Windows to work with the boot files are BCDBoot & BCDEdit, both command line apps.