Install + Boot From External Hard Drive

[de_dust]

Hello everyone! I have a pesky problem that I'm trying to figure out.

I have an external hard drive connected to my iMac. I have installed Ubuntu on unallocated space on my external, the first time I chose to put the bootloader on the external but when I booted up the computer and held the Option key it didn't recognize an OS to boot from.

I am currently reinstalling Ubuntu but placing the bootloader on the internal hard drive hoping that the Mac boot menu will recognize an OS to boot from.

Am I doing something wrong? Or am I right in placing the bootloader on the internal hard drive?

~ de_dust

[de_dust]

Update: No luck with placing the bootloader on the internal hard drive.

My main problem is I can't see the Ubuntu install on the boot menu. Everything installed correctly but I have no way of booting into the actual os. :-?