This is *not* a ubiquity bug. Please do not reopen this bug on ubiquity. The problem is that qtparted only knows how to offer reiserfs with the aid of libreiserfs, which is too broken to use and therefore disabled (it creates reiserfs filesystems that later cause the kernel to oops). gparted uses an external program (mkfs.reiserfs) to do this, which works much better.
José mentions the "no root file system" bug, which is bug 67130. That makes the impact of this bug greater, but it's very much a separate bug, so please don't conflate the two. I'm sure a patch for qtparted to make it able to use mkfs.reiserfs if libreiserfs is disabled would be welcome. It's not a matter of filesystem popularity - qtparted just isn't maintained upstream from what I hear, and I don't have the Qt skill or time to deal with it. ** Changed in: ubiquity (Ubuntu) Status: Confirmed => Rejected -- No option to change an existing partition filesystem to ReiserFS in the new Espresso installer https://launchpad.net/bugs/42994 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs