hi all, have (had?) win7 installation , found myself needing linux work related reasons, dual-boot installed ubuntu on external hdd grub on external mbr , great. boot either os fine, , ubuntu mount windows partitions @ mp3s , other files. had brilliant idea create virtualbox in ubuntu virtualize existing win7 installation have few windows-specific things running while did of work in ubuntu. found some instructions on how this, lot of old, , i'm not super handy *nix, , virtualbox howto didn't make whole lot of sense me. wound frying win7 bootup process. not terrible, ubuntu still works fine i'm @ bit of crossroads. wouldn't mind having ubuntu primary os, , there plenty of great tutorials virtualizing win7 in ubuntu (just not how virtualize existing win7 installations), wonder: is safe leave ubuntu installed on external hdd? feel should move more stable, internal sata drive. if so, should installation cloned, or better reinstall? don't...