I accidentally included a disk in a Fusion drive that I didn't intend to when creating a roll-your-own Fusion drive. I typed "diskutil cs create Fusion\ Drive disk1 disk2" instead of "diskutil cs create Fusion\ Drive disk0 disk1" and so lost a disk with valuable data on it. I did *not* complete creating the Fusion drive by executing 'diskutil cs createVolume logicalvolumegroup jhfs+ Macintosh\ HD 100%'.
No, there's no backup; this was an old Snow Leopard drive that I was keeping intact until I got around to going through it.
I don't necessarily expect anyone here to know how to un-Fusion it, though advice would be appreciated; best I can tell from looking at 'man diskutil' is that I need to execute 'diskutil cs deleteVolume' on disk 1, then 'diskutil cs revert' on disk2. That should get me a reformatted disk (the 'create' command wipes the disk, and then the revert command (presuming that works) changes it back to its initial format.
I'm pretty sure the data has not been zeroed out; certainly the operation didn't have time to do so.
So presuming all this works and I can get a 'blank" disk back, what is the best way to recover the data? My hope is that only the 'header' info will have been changed; is there a hope that I can get my disk back intact, or will I have to scramble around looking for individual files? It's been many years since I've tried anything like this, and I want to make sure I do it right.
TTP 10 running on El Capitan, if it matters.
No, there's no backup; this was an old Snow Leopard drive that I was keeping intact until I got around to going through it.
I don't necessarily expect anyone here to know how to un-Fusion it, though advice would be appreciated; best I can tell from looking at 'man diskutil' is that I need to execute 'diskutil cs deleteVolume' on disk 1, then 'diskutil cs revert' on disk2. That should get me a reformatted disk (the 'create' command wipes the disk, and then the revert command (presuming that works) changes it back to its initial format.
I'm pretty sure the data has not been zeroed out; certainly the operation didn't have time to do so.
So presuming all this works and I can get a 'blank" disk back, what is the best way to recover the data? My hope is that only the 'header' info will have been changed; is there a hope that I can get my disk back intact, or will I have to scramble around looking for individual files? It's been many years since I've tried anything like this, and I want to make sure I do it right.
TTP 10 running on El Capitan, if it matters.