Q: file recovery after partition deletion

Run Deleted Recovery. If it does not show any information, then we can use the tables and try to modify the partition headers and see if data can be retrieved. Do not exit out of the Testdisk.

Please try Recover Data as a last resort, before we proceed with the manual route.

It is not doing anything on the lost Windows partition, so we may need to take the risky approach. Can you backup the entire disk to another external disk, before we start modifying partition tables.

No. Leave the Mac running. Attach a large enough external disk (larger than your current internal disk). Run Disk Utility and create a new image. The source is your internal disk, the destination is the external disk. The external disk must be formatted as GPT with Mac OSX Journaled Extended.

Make the size at least the size of your internal disk. What are the choices in Partitions? Rest of the options are fine.

Please also see Disk Utility (Yosemite): Create a disk image .