only the second of two devices available for installation side-by-side

[sudodus]

/dev/sda cannot be selected for installation side by side (an SSD), only /dev/sdb (a USB3-HDD) is available

This bug is there alongside 1240532 (that the choice to install is greyed out)

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubiquity 2.15.25 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic i686
ApportVersion: 2.12.5-0ubuntu2
Architecture: i386
CasperVersion: 1.336ubuntu1
Date: Wed Oct 16 17:01:38 2013
InstallCmdLine: file=/cdrom/preseed/lubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- debian-installer/language=sv keyboard-configuration/layoutcode?=se
LiveMediaBuild: Lubuntu 13.10 "Saucy Salamander" - Release i386 (20131016)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en
 TERM=xterm
 PATH=(custom, no user)
 LANG=sv_SE.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[sudodus (nio-wiklund)]

I attach a screenshot showing only the /dev/sdb (and I cannot select /dev/sda)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1240622

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Erick Brunzell (lbsolost)]

I think bug #1262824 is likely a duplicate of this bug.