Currently Being ModeratedMay 4, 2012 8:05 AM (in response to Ha Tschi)
Clone your system.
Clone your RAID volume.
Clone as backup strategy.
Clean install Lion on a single drive.
Other options: ditch and sell Apple RAID for another PCIe controller.
Sounds like the OWC SSD PCIe card would be your cup of soup.
OWC Mercury Accelsior 240GB / 480GB
Currently Being ModeratedMay 19, 2012 3:45 AM (in response to Ha Tschi)
Hi Ha Tschi,
I have installed Lion on my MacPro 3,1 that has an apple RAID card, with 4x 1TB drives arranged in a single RAID 5 volume.
Installed Lion from the app store, it went without a glitch. The OS X installer also created tha Lion recovery partition as a raid set. All absolutelly seemlesly, apple-style user experience.
My experience above direclty contradicts what you say that "installing lion on a mac pro with hardware raid is critical".
So just go ahead and upgrade from the app store, reboot, and all is good!
Currently Being ModeratedMay 19, 2012 6:04 AM (in response to Michelin Man)
there is an older and long thread about issues with Lion and Apple RAID card; does not support more than 48GB and still does not support 3TB drives. Kernel panics in 64-bit mode.
Currently Being ModeratedMay 23, 2012 6:22 AM (in response to Michelin Man)
Hi michelin Man
Thank you for sharing your experience with lion istalling on a hardware raid system.
It encouraged me to finally install lion.
Till now, no big problem occured. A few settings I will need to adjust for sure. But ok so far.
I did not get the message, that recovery partition could not have been builtmor "some services could not have been installes" as apple describes it may happen with a raid card.
I have not checked yet though, if recovery partition reallymhas been built.
Currently Being ModeratedMay 24, 2012 2:11 PM (in response to Ha Tschi)
To take all doubt away that your recovery partition has been build on top of your RAID volume, just reboot and hold down <cmd-R>
Your mac pro will boot from the recovery partition! Nice :-)
Also, if you open RAID Utilitiy in /Applications/Utilities will will see that your RAID sets have been renamed to RS1 (2,3...)
This is the only change I'be noticed from snow leopard to lion. Everythign works fine.