Appears that 'hal' (Hardware Abstraction Layer) is causing the partitions to be automatically remounted. Could you test what happens if you also call:
eject /dev/somewhere Does that prevent the device from being immediately remounted? ** Changed in: hal (Ubuntu) Importance: Undecided => Low Status: New => Incomplete -- hal interferes with umount autofs using SIGUSR1 https://bugs.launchpad.net/bugs/63720 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs