Hello All, I have a MacBook Pro that the original HDD failed in. So I bought a new HDD through OWC. Just a 500GB HDD. I plugged it in via a USB adapter to another mac and formatted the drive. I then installed it into the MacBook Pro, plugged in my USB Yosemite Installer and booted it up. When I go through the installer process the disk does not show up as a drive that I can install on. When I go into Disk Utility it shows up but all options are grayed out. I cannot erase, etc etc. I took it out and erased it to "free space". Installed it again and still could take no action on the drive from within Disk Utility. I formatted it again to Extended Journaled and still nothing. When I click on Get Info it says "Writable: NO". So obviously there is something at play preventing me from using it. Has anyone seen this before? Thank you for any help!