[15:37] <ralph> Third-party reporting installer errors after creating / and swap.  /home creation failed, something about not creating 17th partition;  sorry, nothing more specific.  https://help.ubuntu.com/10.10/installation-guide/i386/partition-programs.html warns
[15:38] <ralph> the normal Ubuntu system provides only 20 devices for partitions, so you may not install on partitions higher than 20 unless you first manually create devices for those partitions.
[15:38] <ralph> and an older version of that page actually gives the mknod required:
[15:38] <ralph> https://help.ubuntu.com/7.04/installation-guide/i386/partition-programs.html
[15:39] <ralph> I'm wondering if the warning/advice is still up to date now that udev is about.  Or isn't it there when the installer is running?
[15:40] <ralph> On an installed system, /dev/sdb gets minor of 16 so only 0-15 available for sda anyway.  0 drive, 1-4 primary, 5-15 logical.  So 11 L max even though the kernel supports many more.  A userspace restriction?
[16:46] <JanC> maybe there is a limit to avoid a possible DoS created with a specially-crafted device?  ;)
[16:51] <ralph> I don't think the guide is correct anymore.  Since /dev/hda became /dev/sda with the merge of IDE and SATA the sd limit of 15 partitions has come into play.  I've found users with 20 partitions complaining that a hd->sd kernel meant their later partitions were now unaccessible.
[16:52] <ralph> sda here is 8,0, sdb is 8,16.  I think the installer documents need to make clear 11 logicals is your max now.