Hello everybody, I installed my very first freeBSD yesterday, and I wanted it to dual boot with windows 7. I must say I ran into a lot of trouble before getting it to work properly. Since I found very few threads (except that of andrnils) on how to achieve that, I thought it could be of some help if I gave a feedback. So here is how I did it: First Attempt (Failure): I had my Disk partitionned In two: Archlinux on the first, and Windows 7 in the second. I deleted Archlinux and tryied to install freeBSD on the first partition. I got freeBSD working all right by lost windows 7 (or at least I was no longer able to boot it. I was getting a lovely message telling me a crucial windows 7 component was missing). Second Attempt (Success): Right after that failure, I adopted another strategy: 1. I erased all my disk (with Ubuntu Live CD and gparted) and created two partitions: an NTFS partitions of 30G in the beginning of the disk, and I left the other partition unused. As you can imagine, I definitely lost all my windows 7 data in the process (I had backuped all the important stuff of course) 2. I installed windows 7 in the first partition. There is nothing special to say here, the process is very simple. Just make sure you chose "Custom Install" and chose the right partition 3. I installed freeBSD on the second partition. Here you have to make sure you install it on the unused slice when you get to the FDisk part of installation. The second important thing is to chose the option "Install BootMgr". And you're done. It worked perfectly for me. I think that the important part is to install windows first, and to make sure it is installed in the first slice of your disk. I hope this will help, PS: I am sorry if my english is not brillant, but I am French..