Hi guys, I removed the original 1TB HDD that came with my iMac and replaced with the 3TB HDD that I pulled out from my iMac 2011 when I sold it. I initially hooked it up through USB3.0 but it's always asking to initialize so I decided to open it up since I'm planning to do a Raid 0 using another SSD anyways. When I installed it internally somehow the iMac wants to automatically fuse it with the 128GB SSD and I accidentally clicked fix. I was able to unfuse it but now I couldn't find the files. Is there a way to revert the 3TB HDD to its original working condition or somehow retrieve the files? BTW, I successfully did the Raid 0 and my Write speed is 630MB/s, Read 830MB/s, so I'm happy with that . I'm just a little annoyed that the files on the 3TB HDD isn't showing up on finder . ---------- When I deleted the logical volume group, does it mean that the files are lost forever? Tnx!