My external hard drive suddenly stopped showing up on my Mac, but it contains important files I need to recover. It doesn’t appear in Finder, and I’m looking for safe troubleshooting or data recovery options that won’t erase the drive.
Whether the drive appears in Disk Utility matters more than Finder. Open Disk Utility, choose View > Show All Devices, and look for the physical drive. If it appears but is unmounted, try Mount once. You can also run First Aid, but if the drive is clicking, disconnecting repeatedly, or showing the wrong capacity, stop there. Those symptoms can point to hardware failure, and repeated scans may make recovery harder.
Before using recovery software, try another cable, USB port, and preferably another Mac. Avoid Erase, Initialize, Partition, or any prompt offering to “fix” the disk by formatting it. If the drive appears with the correct capacity but the volume will not mount, a read-only scan with Disk Drill for Mac may find the files. Recover them to a different drive, never back onto the problem disk.
If Disk Utility and System Information both fail to detect the physical device, software recovery probably will not see it either. At that point, important or irreplaceable files are better handled by a professional recovery lab rather than trying more repair tools.
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Don’t try a random power adapter or crack open the enclosure. On desktop external drives, a failing power brick or USB enclosure can make a healthy disk disappear, but the wrong adapter can damage it. Check the original adapter, connect directly to the Mac without a hub, and see whether System Information detects the USB enclosure. If it sees the enclosure but not the disk, a repair shop can test the drive with known-good hardware before you pay for recovery software or a full lab recovery.
Open Disk Utility and choose View > Show All Devices. If the drive appears there, don’t run First Aid or reformat it yet; try mounting it, then use Disk Drill only to scan and preview recoverable files, saving anything recovered to a different drive.
Before assuming the worst, open Finder settings and confirm External disks is checked under both General and Sidebar, since a healthy drive can mount silently and just not show. If it’s already ticked and the drive still won’t appear anywhere in Disk Utility, then yeah, the scan-only Disk Drill route @swifthacker2274 mentioned is the sane next move.