I mistakenly partitioned my external firewire drive. IS there any way I can recover the data?
You might find a tool that will recover a partition-wipe as long as you have not saved any new data to the drive. Otherwise, it is very difficult to recover that sort of material, because re-partitioning is designed to clearly prepare the disk for the new environment / conditions that you set it up for.
I would be looking to restore from backups.
If you do get the data back from a partition tool, save it off onto another device, and when you are done recovering, reformat it to clean up any residue.
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