I wouldn't touch drive mapper again if they refunded part of my money and as far as XOLS it's great. Format it the way you want; which OS you want 1st, delay times if you want a default OS, add new delete old, in short right up there with Irfanview as recommended freeware.
Read the readme file before installing though. Ther author has some recommendations and suggestions. I chose to go with a DOS installation but it's up to you.
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"Finest Kind"
Athlon64 3800+, Asus A8V, 4x512 PC3200, 2x160GB SATA Seagate Barracudas, BFG GeForce 6600 OC 256MB, Thermaltake PurePower 500W, Antec P180 case (silent), XP Pro; home built