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 select USB 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).
Just bought this thumb drive, I plug it into my desktop, and nothing shows up in File Manager or anything else. It is listed in my Device Manager, but doesn't seem to be recognized fully. The thumb drive is slowly flashing red. I also plugged it into my DVR, and it is not recognized there.
This will open the mount point for all drives connected to the Mac computer. You should see the drive mounted here. 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. If the USB drive appears non-functional per the above troubleshooting, please contact SanDisk support for further assistance with warranty.