techsupport

Well the good news is, everything worked as designed!

You have a block by block full copy of one disc onto another disc.

Unfortunately some of those blocks also include partition information and sizing of the disc.

1. Don't do a block by block clone, use rsync or rclone to copy the files themselves to a new appropriately sized disc internally
2. Resize the partition of your new disk now that you've moved everything

Since you have the original disc, as long as you haven't written new data, try 2, and if that fails do 1

AFAIK when you clone a drive it will create a partition the same size as the original disk. It doesn't just copy your files, it's a full disk partition clone.

As @[email protected] said, you'll have to extend the partition to the full drive size in Partition manager (or gparted on a Linux machine).

did you suspend bitlocker or disable & decrypt before cloning? even if you don't specifically enable bitlocker (device encryption), many newer systems enable it by default if the hardware meets certain requirements.. even on base (non pro) editions of windows.

my guess is the software did a sector-by-sector clone of 237gb of encrypted partition it couldn't read and that's what you ended up with on the target disk, regardless of what size it configured in the partition table.

As a first step, just try going into Partition Manager in Windows and growing the actual partition. This is harder from Linux because of Bitlocker.