As the topic mentioned, my time machine HDD got a EBIOS read error during boot, second time for my machine, and one time for another machine, two hard disk got this error in total.
So, here is the symptoms and the details:
1.) The hang occurs during chameleon loads.
2.) Both problematic hard disk are caviar green.
3.) This problem gets resolved for a while after formatting the drive.
4.) This problem only occurs in Time Machine HDDs, for me.
The only hypothesis that came to me is that this problem is caused by assigning drives to be "Time Machines". I don't want to believe that but since this issue has been around me for three times in jsut a few months, I'm starting to believe that. And since I'm no IT at all, I can't think of any solution except for giving up the use of time machine.
Please, would anyone kindly suggest some ideas?