Sabrent Rocket DOA?
Just got a 64gb steam deck and replaced the SSD with a 1tb sabrent Rocket and it's not showing up as an available drive. I reinstalled the old drive and it works fine. I have no other way of testing the drive. Most likely DOA?
You may want to check if it is partitioned.
Any way to do that on the steam deck?
I don't own a Steamdeck myself but since it's Arch Linux based there should be a partitioning tool like GParted built in.