I replaced the battery on my RAID card, when I booted my mac pro up, I get the folder with the question mark. I used a boot USB drive to boot and when I looked in the RAID utility, my RAID 5 volumes were no longer showing, advise.
Ernest
You should not be running your System drive from a RAID. It should be on its own fast Rotating drive or an SSD in an Optical drive bay.
RAID-ness is written in a driver on the drives, it is not somehow stored in the System.
Can the drives be seen as existing in Disk Utility? Is you RAID Card seated correctly in topmost slot 4 (2009 and later), and the extra cable (if so equipped for 2008 and older) properly seated?
Not sure if I'm following you. I have 4 hard drives installed on my Mac Pro. I had a RAID 5 configured and functional for about 5 months. My battery died on the RAID card. I replaced the battery, seated the RAID card back in the slot I removed it from. When I booted to the USB drive to look in the RAID utility, I could see the battery is charged but my volumes are not showing.
The drives don't show in disk Utility. I built the RAID with the RAID Utility and they did show there. I have a early 2008 Mac Pro, Mavricks OS running Mac Server
See if this procedure is any help:
Mac Pro RAID Card or Xserve RAID Card: Volume may not mount after improper shutdown or restart
I replaced the battery on my RAID card, when I booted my mac pro up, I get the folder with the question mark. I used a boot USB drive to boot and when I looked in the RAID utility, my RAID 5 volumes were no longer showing, advise.
