Hello! So, I have a CD-ROM that I took out. Then, I got a caddy and a 5 TB HDD. I stuck that in my laptop. It worked until my system died. I have another laptop (system 76 very similar specs). So, I put the SSD and HDD + caddy HDD in and it worked. Then, it gave me the following errors: Seagate HDD not recognized in Windows... was just working. Linux USB can't see it nor can Seagate tools. Computer Management says disk not initialized... do I want to initialize and MBR OR GPT??? What do I do? Thanks!
If the drive didn't have anything on it or you don't want to recover any data on then yes, initialize it. And a 5tb hard drive should be GPT.