undo RAID 1 rebuild mistake and recover original

Using TestDisk to undelete files
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Posts: 1
Joined: 21 Jan 2016, 08:06

undo RAID 1 rebuild mistake and recover original

#1 Post by vicvic »

Perfect Storm:
i have an external hdd (capacity for two 3.5" bare SATA drives),
its an IcyDock model MB662UEAB-2S
with hardware dip switches set to JBOD connected to
Mac OS X and used with several 1TB bare SATA drives for projects.
Mysteriously, the dip switches were changed to RAID 1 Mode, when i placed the second drive in the IcyDock, the second drive became a duplicate of the first drive (RAID 1). this all happened in a matter of a few minutes, when the desktop displayed the same drive twice... here i am...
i verified that the second drive is not exactly the same as the first drive, as all the file folders, file names, and storage space used is the same, but the files themselves do not open.

how can TestDisk 7 undo the RAID 1 rebuild, and restore the second drive to its original state?