Comment 5 for bug 451304

Impact:
A regression in the hal-->devicekit-disks transition resulted in hidden recovery partitions appearing after an upgrade to 9.10. Some ACER systems use a hidden recovery partition of type 0x12 (label 'PQSERVICE'). These hidden partitions were hidden from the user in 9.04, but are not properly hidden in 9.10 with devicekit-disks 007-2ubuntu3. In 9.10 it is possible for the user to mount these hidden partitions and modify the files on them, inadvertently breaking the system recovery feature.

Fix:
The patch 03-hide-configuration-partition-12.patch fixes this behavior on 9.10.

TEST CASE:
On a system that contains a hidden partition of type 0x12, install 9.04. Notice that the partition cannot be accessed from the file manager or the Places menu. Upgrade to 9.10; the hidden partition will now be visible in the file manager. Update to a patched version of devicekit-disks. The hidden partition should not be accessible from the file manager or Places menu.

Regression potential:
Users who rely on access to a hidden partition of type 0x12 will no longer have access to the partition. I expect this is a very small set of users.