Download the website version of M3 Data Recivery Free now.
Due to sandboxing rules on Mac App Store, App Store version can only recover lost files from Disk Image (.dmg), but the website version can directly recover lost files from storage devcie without making the disk image, see following product comparison table:
Supported Operating Systems
macOS 10.13/10.12 (Sierra) and Mac OSX 10.11 (El Capitan), 10.10 (Yosemite), 10.9 (Mavericks), 10.8 (Mountain Lion), 10.7 (Lion)
Supported file systems
HFSX, HFS, HFS+, exfat and FAT32
Supported storage devices
Hard drive, external hard drive, USB drive, flash drive, pen drive, memory card, CF card, etc.
How to use M3 Mac Data Recovery App Store version to recover lost data?
Step 1: Open Applications -> Utilities -> Disk Utility, select the storage device where you lost data and then select New Image to make a disk image file: .dmg.
Step 2: Launch M3 Mac Data Recovery and then load image file to start scan.
Step 3: After the scan completed, you will see the found files as below.
Step 4: If the files you expect are not found, please click Deep Scan option and try again.
1. When I run M3 Mac Data Recovery, I receive warning message: "M3 Data Recovery.app" is damaged and cannot be opened. You should move it to the Trash.
By default, Mac OS X security allows only the apps that are downloaded from the Mac App Store or from Mac certified developers. To fix this error, please open System Preferences -> Security & Privacy -> General tab -> Change the Allow apps downloaded from: option to Anywhere.
2. When I run M3 Mac Data Recovery, I receive warning message: "M3 Data Recovery.app" cannot be opened because it was not downloaded from the Mac App Store.
It is caused by Mac OS X security settings which allows only the apps that are downloaded from the Mac App Store. To fix this error, please open System Preferences -> Security & Privacy -> General tab -> Change the Allow apps downloaded from: option to Anywhere.