Boot Menu for iMac is Empty After Installing Ubuntu
A few days ago, I completely wiped my 27in iMac using the Disk Utility and filled the Terabyte with Ubuntu 12.04 LTS through USB. After using Ubuntu, I decided I wanted to reinstall MacOSX alongside it (perhaps at 200 GB). However, now when I activate the boot menu (alt) to boot from the MacOSX install disc, the Menu comes up EMPTY! Literally; all I get is a blank white screen, without even the Ubuntu HardDrive showing up. Holding the C key brings up Debian, and then Ubuntu boots like nothing happened. I feel a little bit hostage to Ubuntu since my Boot Menu is gone. Is there any way to force-boot from the disc from the Ubuntu OS? It seems that it's my only option, even though Ubuntu doesn't seem to recognize the disc while it's running as well.
Last edited by lisati; April 1st, 2013 at 04:58 AM.
Reason: Please use the default font
Alright, let me change my question a bit. I'm kinda new to Ubuntu, and I just discovered Grub from booting (ESC key). Since I erased MacOSX, it seems the Mac boot menu is gone for good. However, the USB with a different version of Ubuntu that I need does not show up on the Grub list. I see: Ubuntu, Recovery Mode, Previous Versions, and Memory Check. How can I boot from a USB if I have a full Ubuntu install? I can only find tutorials online explaining how to make a USB bootable with Ubuntu, but I just want to boot from the USB to reinstall the system itself. This is kind of a big deal to me as if I don't get a clear answer, I'll keep trying and messing up until I have to buy a new harddrive.
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