WD MyBook Studio II Crash

WD Studio II crashed last week. Made a mirror image of one of the two 500 GB drives. Followed Thomas Kaeding (sp?) method in Linux. Found keyblock at end of disk and it had an oxRI … notation at the beginning of the block. Unsuccessful decryption. Any suggestions? I’m running Windows 10 Host and Oracle Linux VM. Disk has many photos of my deceased parents and all my medical school review materials. Any help much appreciated.