Secure Erase causes HDD to stop being detected
I'm trying to RMA my 2 Samsung F1 1TB HDDs, and before I do that, I'm trying to secure erase the drives following instructions from here. The 1st one worked without any issues. The 2nd one stopped prematurely without any error message, and then subsequently cannot be detected by Linux fdisk. I tried rebooting and it now hangs at SATA detection at the POST screen. Once I remove the drive then it boots up properly. I've tried different SATA ports - same result.
Does anyone know why this is the case? Has the drive been somehow locked?