can't unmount HD in optibay for formating

[guidoverduci]

Hi,

I've installed the original 320GB hd in the optibay and I can't unmount it in disk utility. I'm trying to delete the OS that was original installed on it and is now on my SSD. Any suggestions?

 

[nebs7]

Not sure if you've solved this yet or not. I had the same problem. The trick is to unmount the drive before going into disk utility.