Startup disk "Not mounted", needs to be repaired but can't get it to mount

I did a Verify Disk because my HD has been having issues. It told me I needed to backup and reformat, so I went ahead and backed everything up and went to DU in recovery mode.
But when I got there, my Macintosh HD showed up as "Mount Point: Not Mounted", so I did the following:
I clicked on the Macintosh HD from the list and clicked "Mount". It gives me the following:
Mount failed
The disk "Macintosh HD" could not be mounted.
Try running First Aid on the disk and then try mounting.
So I click "Verify Disk" and it gives me this:
Disk Utility stopped verifying "Macintosh HD"
This disk needs to be repaired. Click Repair Disk.
So I go to click Repair Disk but it's grey and cannot be selected, I assume because my drive is not mounted.
So how can I'm in a paradox and REALLY need help with getting my startup drive mounted again. Can anyone help?
Let me know if I can provide more info for troubleshooting and thank you in advance!

Install or Reinstall Mavericks or Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

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