USB Flash drive not getting recognized or detected when connected to Windows or Mac system is an issue that happens most frequently for the computer users. As a result, users face huge data loss, as they are not able to access the files stored in the flash drive. Actually, the factors that could trigger this issue includes.
- Check USB cable, USB connection and USB ports. Jump drives are directly plugged into USB ports.
- And besides, there can be a risk that data on the external USB pen, hard, or flash drive is corrupt, which means you can’t transfer what you need between devices at all. Corrupt data can be one reason your Mac won't recognize an external drive, but there are other reasons too.
First we need to check your Finder preferences and ensure external disks are set to mount to your desktop.
With the Flash Drive connected to the USB port of your computer:
1. Click Finder in the upper left corner of the screen and select Preferences
2. Ensure the check box next to External disks is checked
If the Finder preferences are set to mount external drives to the desktop we will need to determine if the USB flash drive is detected by the computer
1. Double click the MAC HDD
2. Double click Applications
3. Double Click Utilities
4. Select System Information
5. On the left side selectUSB
If you see Flash Drive listed under the USB hub the USB flash drive is detected properly. You can verify is the drive is mounted by Selecting 'Go > Go to folder' from the file menu and typing /Volumes/ (Note: This is case sensitive). This will open the mount point for all drives connected to the Mac computer. You should see the drive mounted here.
Why Isn't Flash Download Recognized Mac Os
If the USB flash drive is not listed under USB hub please verify other USB devices work properly and if possible test the USB flash drive using a different computer.If the USB flash drive is not detected on other computers or if other USB devices are working properly on this Mac then most likely the USB drive is not functional.
Why Isn't Flash Download Recognized Macbook Pro
If the USB drive appears non-functional per the above troubleshooting, please contact SanDisk support for further assistance with warranty.