[Bug 60868] Re: gparted does not detect sdb

[Jeff Greene]

In that case, stop the installer and run GParted manually by typing:
gparted /dev/hda /dev/hdb which will detect both drives. Partition it
manually with gparted and then try running the installer again. You
won't be able to make partition changes to /dev/hdb, but I believe you
will be able to install it that way..

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gparted does not detect sdb
https://launchpad.net/bugs/60868