Originally Posted by docbuntu
I installed Ubuntu 10.10 on my external USB HDD (320 GB with 2 NTFS, 1 ext4 and 1 swap partition)
I installed the bootloader into my external hard disk
I am able to boot into my ubuntu installation in my laptop by choosing USB boot option at BIOS start up
Though I have access to two modern PCs with USB boot capability, i am not able to boot into the Ubuntu installation on my external HDD.
After I choose USB boot , I just get a black screen with a blinking cursor at the left. The grub menu option does not load
How do I work around this problem?
Ensure that all internal hard drives are disconnected from your computer during the install (pull your SATA or IDE cables)
Download the Ubuntu ISO, burn it to a CD and restart your computer from the live CD
Once the Ubuntu Live system is up and running, navigate to System-> Preferences-> Removable Drives and Media and uncheck the following options:
Mount removable drives when hot-plugged
Mount removable media when inserted
Browse removable media when inserted
Click the install Ubuntu icon from the desktop to begin the installation
At step four Prepare disk space, select the Guided-use entire disk option and select to install to your USB hard drive:
Prepare disk space - Full Ubuntu external hard drive install
When the installation has finished, select the option to restart-now
Boot into your system BIOS or Boot Menu and select to boot from your USB Hard drive.
If all goes well, you should now be booting into a full installation of Ubuntu from your portable USB device.
Source : http://www.pendrivelinux.com/install...sb-hard-drive/