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how can I install Ubuntu 12.10 to an external USB HDD?

On the disc partitioning screen of the installer there is only /dev/sda showing up in the list. However in a terminal window I can see /dev/sdb with sudo fdisk -l. So how can I get ubiquiti to show /dev/sdb as well?

enter image description here

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Does any of the information here help? askubuntu.com/questions/52274/… –  belacq Nov 12 '12 at 23:20

2 Answers 2

up vote 0 down vote accepted

It sounds like the USB drive is not mounted.

Try unplugging it and plugging it back in, or use Disc Utility to check it is mounted.

EDIT :

From the picture it looks like the USB drive has the wrong mount point as /cdrom.
It should be automatically mounted at /media/name-of-drive.
This is why the installer does not see it.

Have a look at comment #6 in this old bug report and see if it helps.

Solution

The simple solution is not to connect the USB HDD until after the live 12.10 CD boots up completely.

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It is already mounted, see the attached screenshot. –  medve Nov 12 '12 at 23:20
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You are right. Somehow the USB HDD get mounted as /cdrom, probably because an older version of Ubuntu was on it. The simple solution is to only attach the USB hdd after the live 12.10 CD booted up completely. Thank you! –  medve Nov 13 '12 at 19:41
    
@medve - thanks for the feedback and saying what worked for you. I have added the extra info to the answer to help others, glad it's working now. :o) –  Fernhill Linux Project Nov 13 '12 at 20:06

You did click on the dropdown box in the top right, right ?

See this for the dropdown box with /dev/sda selected.

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Yes, it is there, but not in the install screen. See attached screenshot. –  medve Nov 12 '12 at 23:18
    
Sorry, it's not gparted in the install process .. It should look like that instead. –  user55822 Nov 13 '12 at 1:41

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