I got this problem suddenly today with 14.04 on SDD/brtfs, shortly after I switched to NVIDIA driver, as the standard one crashes (known bug). As my disk is not an array, dmraid -ay does not help (command does not exist). Disk mounts perfectly in another Ubuntu. Current Ubuntu does not start anymore.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/931929 Title: root on RAID:0 fails to boot Status in dmraid: New Status in tools for generating an initramfs: Confirmed Status in udev - /dev/ management daemon: New Status in initramfs-tools package in Ubuntu: Confirmed Bug description: Booting from RAID is often broken after upgrades or fresh installations of Ubuntu. initramfs is not activating RAID devices. Steps to reproduce: 1. Upgrade or Install Ubuntu on a RAID 2. Reboot 3. Observe failure to find root drive and drop to busybox To work around this, when given the busybox prompt enter: dmraid -ay Verify that all of your raid devices are initialized, then enter: exit Booting should then continue. See comment #2 for a persistent (rebootable) workaround. To manage notifications about this bug go to: https://bugs.launchpad.net/dmraid/+bug/931929/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp