I recently changed optical drive to have a caddy and my older HD, i and replaced the original with a 128gb SSD so the old original hard disk went into the caddy. It came up fine in my left panel in finder.. but now doesn't ....I have a feeling I unmounted it or ejected it (if there is a difference) is there a way to get it back.... I tried disk utility and does not show.. I tried command and shows replies but I'm not sure I understand, the SSD i use for running oS is 128gb but the second one I have installed is bigger. I'm not sure why is says (internal, virtual): and (internal, physical): or where the second hard drive has disappeared too. Can someone check the output below and explain it to me and also help out with getting my HD loaded so I can browse it. I tried terminal command distil list and get this output.. Code: /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *128.0 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage Mac 127.2 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 /dev/disk2 (internal, virtual): #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS Mac +126.8 GB disk2 Logical Volume on disk0s2 2471DB76-93CE-4DA2-A8E8-9A40EE9B1F71 Unencrypted This is what DiskUtility Shows..