Second Hard Drive not showing on Mac

[Patrick-32]

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..

/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..

 

[DeltaMac]

Is your hard drive listed in your System Information?
Go to Apple menu/About This Mac, then click on System Report.
Click on the SATA/SATA Express tab.
If you don't see it there, then your hard drive is dead, or the SATA cable is loose, or faulty.

 

[Patrick-32]

Is your hard drive listed in your System Information?
Go to Apple menu/About This Mac, then click on System Report.
Click on the SATA/SATA Express tab.
If you don't see it there, then your hard drive is dead, or the SATA cable is loose, or faulty.

Why does it have 2 x intel 6 series chipset

No idea why it showed.. the other hard drive was perfect before i took it out and the cable also was used for optical drive.
il check if anything is lose.. would it matter than a mac os was installed on the old one before hand.

 

[Patrick-32]

Was a lose connection to the board. i had checked it earlier but it didn't show up, checked it again and wasn't connected, it shows in left panel now.