hi i have win Vista as main OS and then Win 7 as the second OS ... use to have XP as the third OS but have deleted it and have done many unsuccessfull attempts to install iatkos 4i and now iatkos 5i but if i install them then i loose vista and windows 7 boot and still mac does not boot. what to do or should i use some other distro i have hp dv 6137TX ... thanks in advance ...