Hard Drive Not Showing up
Internal & external hard drive not showing up means that you can't see the drive in any part of your computer. That's to say, the drive is not detected nor read by the operating system. So, it won't show up in Finder, Disk Utility, desktop, or even system information (for mac), either in File Explorer, Disk Management, or in Device Manager (for Windows).
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Hard Drive Not Mounting
While internal & external hard drive not mounting means that the system has detected the hard drive but is unable to recognize it. The system can't access the hard drive via a mount point because of file system corruption, partition table lost, etc. From the computer side, it will show the storage device but can't access it. From your view, you'll see the drive on your computer, but the drive is unmounted (greyed out), or it's not recognized with the correct disk information.
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Normally when you plug a thumb drive into the USB port of your Mac, the USB drive will be displayed on your computer. However, sometimes, the USB drive may not show up as you expect. Or, it's detected but won't work normally. Then, you need to replace the USB cable, USB adapter, USB port, and check other relevant components.
External HDDs or external SSDs are often externally used to free up computer's space or back up files. Occasionally, the external hard drive is not showing up on computer after plugin. Don't panic. Locate your situation in these posts and find a solution to fix the external HDD or SSD.
The internal hard drive (often the startup disk) of your computer is important for booting up. When the internal hard drive is not showing up, not mounting, or not working, the worst case is that your computer won't turn on. If you are facing such boot issues, you'll find a solution in the following posts.
Be it micro SD cards or standard SD cards, they are good portable hard drives for cameras, phones, and other digital devices. But the SD card could not be recognized when you want to transfer SD card files to your computer. If your SD card is not showing up on computer, these articles might help.
Storage devices made by all manufacturers, such as WD, Seagate, Toshiba, Samsung, and SanDisk, could have troubles in working on computers. When hard drives are not showing up or recognized by your computer, you’ll know what to do with the following posts.
When your hard drive is showing up but not gets recognized, you probably have tried all solutions while the drive just won't work. Then, you can recover data from the hard drive. With iBoysoft Data Recovery, you can get files retrieved from the hard drive as long as you got a Mac or Windows PC.