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graphicsmonkey
Jun 20, 2009, 02:58 AM
Hi Guys,

I have recently purchased two SSD drives for my 2008 mac pro. I have these software raided 0 with leopard installed. I have figured out that I cant dual boot off this, which is ok. But now i have been trying to install windows, on the original 300gb hard drive but i have come across a few problems.

Firstly when I try and use the bootcamp assistant it wont let me choose the 300gb hard drive to partition. When i use the disk utility and do it that way, then using the windows cd and in the installation part try to format it to install it this way it says it cant write to the SSD drives. I assume it needs to do something here for it to work with switching between the operating systems and it cant detect the raid because its only software.

Is it possible to do this or will i need to hardware raid the SSD's then try it again like that? or am I missing something here?

any help would be greatly appreciated. Thank you!



Dr.Pants
Jun 20, 2009, 03:16 AM
What SSD drives did you purchase? A model would really help, as there a a few different controllers out there as well as several different firmwares, each with varying levels of support...

graphicsmonkey
Jun 20, 2009, 03:20 AM
Ah ok sorry, I bought the OCZ Summit series.

gugucom
Jun 20, 2009, 04:31 AM
AFAIK any RAID on a Mac Pro will prevent Windows to use SATA ports for boot device. The ports will be regarded as external and Windows will reject them. You can uninstall the RAID and set the SATA ports to AHCI mode. Then reinstall the RAID and you should be ok. Setting AHCI mode is not trivial. Search for the thread and proceed only after making a backup.

graphicsmonkey
Jun 20, 2009, 04:40 AM
ok cheers thanks for that. Will i take a performance or speed hit from doing this?

gugucom
Jun 20, 2009, 04:50 PM
ok cheers thanks for that. Will i take a performance or speed hit from doing this?

No, the AHCI drivers are much faster than the legacy drivers.

http://forums.macrumors.com/showthread.php?t=709582