Another workaround for those who don't have the ability / want / time to download the daily ISO build, when the busybox prompt appears wait around 30 seconds to 1 minute and then type exit and press Enter, busybox should exit and the Ubuntu boot process will continue.
This problem could come down to you having an Intel D945 motherboard and the need for extra time in discovering S-ATA devices.
Another workaround for those who don't have the ability / want / time to download the daily ISO build, when the busybox prompt appears wait around 30 seconds to 1 minute and then type exit and press Enter, busybox should exit and the Ubuntu boot process will continue.
This problem could come down to you having an Intel D945 motherboard and the need for extra time in discovering S-ATA devices.
Check this bug report: https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/290153