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I am a complete noob. Following advice online it seems that I need to change the partition size because LUKS size can't be detected automatically. Testdisk sees my LUKS partition but doesn't see it takes the whole disk and it only appears as 2MB. I've tried to read up about cylinders and what not but that goes way over my head. Could someone please walk me through this?
TestDisk 7.1, Data Recovery Utility, July 2019
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org
Disk /dev/sdd - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512
Because these numbers change the way that TestDisk looks for partitions
and calculates their sizes, it's important to have the correct disk geometry.
PC partitioning programs often make partitions end on cylinder boundaries.
A partition's CHS values are based on disk translations which make them
different than its physical geometry. The most common CHS head values
are: 255, 240 and sometimes 16.
[ Cylinders ] [ Heads ] [ Sectors ] [Sector Size] >[ Ok ]
Done with changing geometry