Oct 28, 2021 Formatting would result in data loss before formatting your drive, make use of Remo Recover Mac a data recovery software to recover data from external hard drive does not mount on mac. Navigate to the Disk Utility then select the External hard drive not mounting on Mac then click on the Erase option. The drive works fine and is colorful but the USB plug is a bit touchy, you have to get it in the slot just right or it will not mount. Maybe we just got a bad one but once the drive is recognized you cant touch it or it will disconnect because the cable is loose. If your external hard drive appears there but is not mounted, you can click the Mount icon then the external hard drive will be mounted in macOS Mojave. However, if the external hard drive appears in Disk Utility but is unmountable or no volumes of that external drive listed, you got both good news and bad news.
If your Mac is not performing well such as overheating, running slow, or frequent system/app crashes, here is a guide to help you reset Mac without losing data.
Mac won't turn on
The most complete than ever solutions to 'Mac won't turn on' problem to make your Mac boot past the Apple logo/loading bar/login screen to the desktop successfully.
Forget Mac password
What to do if you forget Mac password? Find solutions to get back your login or admin password to unlock your Mac.
External hard drive is not showing up on Mac
You can't have access to your stored files if external hard drive is not showing up on Mac. It could result from Mac's wrong configurations or disk corruption.
SD card is not working
An SD card is a handy extended storage medium for digital devices. If the SD card is not working on Mac, all your saved photos and videos will be lost.
Macintosh HD is not mounted
Adata Hard Drive Software
Adata Ssd External Hard Drive
When Macintosh HD is not mounted, the drive is not available for loading up the operating system, resulting in an unbootable Mac. Use iBoysoft Mac data recovery software to rescue Mac files first.