Otherwise, creating such a filesystem can easily destroy the wrong data - hence only attempt this if you know very well what you're doing. PhotoRec is a companion program to TestDisk, an application for recovering lost partitions on a wide variety of file systems and making non-bootable disks bootable again. However I knew perfectly where to create this filesystem, especially because it did not border with the lost partition. PhotoRec is free - this open source multi-platform application is distributed under GNU General Public License (GPLV v2+). PhotoRec is file data recovery software designed to recover lost files including video, documents, and archives from Hard Disks and CDRom and lost pictures (thus, its Photo Recovery name) from digital camera memory. So I could speed up search a lot by creating a filesystem in an empty partition before the missing one, so that Testdisk would skip that space. If there is a lot of free space (without a filesystem) before the partition, this might be very slow.

It is based on a simple but powerful textual interface that walks you through recovering your lost data. Once it thinks it found a partition and you confirm its guess, it will skip searching inside the partition. PhotoRec is a free and open-source data recovery software program designed to recover lost files including video, documents, and archives from hard disks, CR-ROMs, and lost pictures. If the partition entry is just removed, Testdisk will look for the start of the partition in sensible positions (by default, at the start of every cylinder, since partitions should usually be cylinder-aligned), ignoring the existing partition table. A (dangerous) tip to speedup Testdisk from my own experience But if you're really impatient (as I am) and you know very well what you're doing, you might want to read on. Otherwise, it might take more time, but probably waiting is the most sensible option. If you indeed just removed one partition, it should be fast. I had the luxury of an empty HFS+ partition, so I just removed it and recovered it using Testdisk - it was rather fast. I tried using Testdisk 6.13 (latest stable release) and it worked like a breeze for both NTFS and HFS+.

Photorec macos