my Ubuntu does not want to boot up from an external usb drive. It only happens for my stationary PC though, while it runs nicely for my asus laptop.
Here goes the boot-repair: http://paste.ubuntu.com/1670289/
If matters, the story of my problem solving is as follows:
I have a 120 SSD drive (only) with windows and some games installed on my PC, and have really no option to put a wubi installation next to it (no space obviously). So I decided to put ubuntu on my external drive (500gb in size), using wubi.
It worked nicely, but after few days it didn't boot and dropped to BusyBox shell. For wrong reasons I decided I cannot fix this (maybe I could, do not matter now I guess), and tried to reinstall ubuntu once again.
I've read somewhere that wubi is supposed to install ubuntu inside windows installation, and if I want to put my ubuntu on the external drive, it is better to do it from liveUSB. So I installed it like three or four times, each time following a different tutorial and getting same result.
No booting from PC.
Once it stated that it lacks boot manager, whatever that might mean.
Tried to use boot-repair at this point, it processed for ages and stated that all should be fine now, but it ain't.
I guess that my system is now a real mess with grub configured for non-existing ubuntu instalation and external drive split into three non-usable partitions. And I have no much idea how to solve it anymore.
I'd be glad for any help, or at least a link to solid guide on how to get what I want. I am veteran on installing ubuntu now, though I'd like to install it working at least once.