Comment 7 for bug 1055006

You can switch with

CTRL + ALT + F2 (or F1 or ...)

to a terminal during installation.

The GUI install is still on

CTRL + ALT + F7

and you can swith between them.

Regarding to

https://wiki.ubuntu.com/DebuggingUbiquity

you can find the relevant logs in

var/log/...

(by default the promt points to /home/ubuntu/
so you have to switch)

to examin them manually you can use if you are in var/log/

nano syslog

(exit nano with CTRL + ^ + X )

So far I have tested.

May be that works also when the install procedure is already hanging.

What I have not tested is to get out the logs to a usb stick or something.

But I can give a document here that might be helfull:

https://help.ubuntu.com/community/Mount/USB

especially:

https://help.ubuntu.com/community/Mount/USB#Manually_Mounting

Hope that helps on a Sunday.