I can try that util Rich if you want to share it.
I sent you a PM with a link to it.
I'm zero'ing out the drive each time on my macOS machine: diskutil secureerase 0 /dev/diskx and it takes a few hours so I'm confident it's wiping the entire drive.
This sounds like a remarkably bad idea! You are wearing out your SSDs needlessly. Only the first and last 100 sectors (at most) need wiping. In any case, if you end up with a bad GPT layout (or you want to revert to MBR) there's a way to repartition it without doing a wipe. It involves making a few temporary changes to config.sys, so I'll save that until it's needed.
In the past, I used testdisk after losing a GPT disk which was altered by ArcaOS adding MBR on it during installation.
With tesdisk, I could put GPT back very quickly (may be - not tried out of windows disk and only a supposition - it could help for mbr/gpt change but other function may not be usable due jfs nor hpfs aren't told been supported)
I suggest you to use zip instead of diskcopy (I use zip now " from the root partition to save: zip -r -S -9 -y n:\drive_src.zip * (n=destination drive letter) " since arca noae support team suggested me to use zip. It could be very long but it has several advantages. 1/ you have a backup - 2/unzip into the new partition and if needed run instalx to have it bootable
If these information could help !