I am trying to rebuild a raid that was actting funny. They are two seperate drives that are internal. After I frormated both of them when I look in disk utility and click highest disk, it does not give me an option to select Raid. How would I get around this to be able to get my raid back up.
MacBook Pro, OS X Mavericks (10.9.2)
Internal on your laptop? and you are booted from another device and not from the drives used in the array?
They are in a mac pro tower, and the os drive is a seperate drive. So there is 3 drives total. Any reason why they wouldn't be able to put in a raid set? Do you think that disk utility thinks they are external?
did you format each individually?
are they both the same size, type, make? mixing drives in an array is not good idea.
Nothing on the drives now, reboot with Shift Key, or boot into Recovery Mode.
My OS is on one drive, TimeMachine another, and "/Users/myaccount" on third - very common, and you don't want media files and libraries on the boot drive. Ideal is a smaller fast SSD for just the system OS and apps.
Screen shot of what you see if either of the above, Safe or Recovery, is not able.
Or clone the system to external, slide out partially the system drive. Even one of the drives for the array.
And is this for a stripe or mirror? The data going on the array also needs to be backed up. And an array is not the best use for system. An SSD would be. Or for scratch for photoshop. Or for Lightroom and Aperture.
Yes, I formatted them individually and they are the exact same drive. attached is what the disk utility looks like. What do you mean clone the system? Am I simply pulling out the drives and re attaching them? I plan on creating a raid 1 which is what it was before I formatted.
but they are not bare, they need to be erased, nuked, no partition or just one.
That is what it made when I totally erased it through disk utility.
And this is what happens when I try to erase them again.
misuse of disk utility and raid tab function.
click on the drive, not the volume. or work in raid tab.
you have to delete and create in RAID tab or erase the raw drive, not one of the two raid slices.
When I click on the drive, there isn't a tab to erase, nor is there a raid tab.
Sorry, im just not sure why it won't let me make these two in a single raid like I had it before. And now I can't erase them. This is what shows when i click on the highest HD.
Raid Option not available in disk ut
