Suffice it to say, I was unable to recover the files I had intentionally deleted. The utility identified approximately 315MB of unreadable files, including empty folders, a pair of preference files, and a document called NowContact. Unlike Stellar Phoenix, Disk Drive tallies recovered files in storage size. Running a Deep Scan of my SSD was fast: in fact, at 35 minutes, it beat its own estimate. Given my interest in recovering specific files, I selected the Deep Scan to increase my odds. On the next screen, I discovered four scanning options: Quick Scan, which identifies minor issues with a hard disk Deleted Files Scan, which searches a drive's free space for lost files Deep Scan, which crawls the entire disk and Clone, which copies the file system for further recovery. There is, however, a possibility that utilities can retrieve recently deleted files. By clearing sectors that are no longer in use, TRIM extends the lifespan of an SSD, but it also greatly reduces the efficacy of data recovery utilities. The issue is a command called TRIM, which zeroes out the parts of the drive where deleted files are stored. I opted to test both a SSD and HDD because of the challenges solid-state drives present for data recovery software. In the interest of testing real world usage, I selected six common file types (DOC, XLS, PDF, JPG, MP3, and MP4). To ensure uniform testing, I deleted the same files on both machines two weeks prior to testing. ![]() The MacBook Pro features a 120GB solid-state drive (SSD), whereas the Mac Mini uses a 500GB hard disk drive (HDD). ![]() Both systems run the same version of macOS Sierra. I tested Data Rescue alongside four other recovery utilities using two Macs: an early-2015 MacBook Pro and a late-2014 Mac Mini. That said, the next version (due later this year) will bring Mac, PC, and Linux offerings into alignment, according to a Prosoft technician. Windows users should note the Mac version boasts a more streamlined interface and superior cloning functionality.
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