Hi, I have a mid 2011 iMac 27" with a 250Gb SSD and a secondary 2TB HDD. Currently I have 16 Gb Ram and running OSX 10.9.5. I've purchased a seagate 4TB SSHD to substitute my internal secondary 2TB HDD. (I'll clone the contents of the HDD to the SSHD) First I connected the new disk to an external enclosure so I can initialize it and clone it before opening the iMac and swap it with the internal (secondary) HDD. Problem is.. the 4TB disk reads as 2 separate disks on Disk Utility. One with 2TB and one with 1.8TB. This is my first time with an SSHD, and I realize it is indeed 2 disks, and ssd and a hdd and it chooses what files go where... But how do I initialize it as one disk so it can do its thing on itself? THank you. M.