Dual Drives Dual Boot OSX and Win7


I installed EasyBCD 2.02 on Win7 x64.
I set it up to boot to one or the other drives.
I have OSX on one drive and Win 7 x64 on another drive.

No problem booting to Win7 or OSX first time BUT...
Upon reboot my bios gets reset to default and OSX or Win 7 won't boot up.
From then on my bios keeps getting reset and I have to keep going in and fixing the bios.

I would like to be able to dual drive boot. Just can't get it to work.

Thanks for any help.


Telephone Sanitizer (2nd Class)
Staff member
What do you mean your "BIOS gets reset" ?
The W7 bootmanager is invoked in a chain starting at the BIOS. Nothing done in the OS boot manager/loader process affects the BIOS.
Do you have a USB device or a bootable CD/DVD loaded which is taking precedence ?
Remove any bootable floppy/optical/USB device and make sure that the BIOS HDD sequence puts W7 before OSX.


I ended up Reinstalling OSX 10.6.3 and it booted up fine with EFI bootloader CD.
So I rebooted and went to win7 and added OSX to easybcd. Rebooted.
osx will not start up.
I thought when I loaded osx in easybcd, all was taken care of and that it would fix the boot on the osx. Do I have to do this manually?
Am I missing something here.

Note: I installed OSX by itself on the primary sata with no other dives attached. So I think it's labled as C:\
I also installed Win7 the same way and it's labled C:\
Win7 drive is the primary drive.
OSX is the secondary drive.


New Member
hey bud, just had this problem a few days ago. I couldn't get easybcd to work at all, so I ended up installing chameleon rc3 on osx. It looked way better and was incredibly straight forward. Its just an installer with nothing to customize, everything was done automatically.