Found these lines in the Ubiquity-Syslog.txt that may be related to this problem:
6:28:46 ubuntu dmraid-activate: ERROR: Cannot retrieve RAID set information for isw_ccifjiiifa_RAID-0 Jul 11 16:28:46 ubuntu dmraid-activate: ERROR: Cannot retrieve RAID set information for isw_ccifjiiifa_RAID-0 Perhaps there is a problem in ubuntu dmraid-activate? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1023697 Title: Custom install failed to install grub on Raid 0 boot partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1023697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs