Uhh: However! The same live OS I just booted into has a KDE Partition Manager app, so I’m going to use that to resize the windows partition.
That… just took four hours with no progress bar. Disk (fast SSD) was chugging at 20MB/s while resizing 2TB partition down to 1.2TB.
It worked! But four hours with no progress indicator. Not nice. 3/