After upgrading to OS X 10.7, my removable hard disk cannot be detected and prompts me to eject or initialize.
I updated to OS X 10.7.3 and now it says that my removable 2TB hard disk which is less than 6 months old and seems to be in good condition cannot be detected. On Time Machine is says that the back up drive is not available too.
Please help as all my photos and time machine backups are on that disk.
MacBook Air (13-inch Late 2010), Mac OS X (10.7.3)