When it comes to data recovery, iBoysoft Mac Data Recovery is your best assistant. If you don't care about data on the drive, please skip to solutions to fix USB drive files not showing up on Mac. Because any further operation will write new data to the USB drive and overwrite the original data. When you finally find some files are disappeared from flash drive on Mac, if you didn't back up important data, you must conduct data recovery on the USB drive right away. First of all: Recover lost data from USB flash drive on Mac
Please calm down and follow the solutions below. This is a common problem, which is caused by various factors, such as mistaken deletion, hidden files, wrong file system and virus attack, etc. But sometimes your USB flash drive or other external drives files is not showing up on Mac. In general, when you connect a USB flash drive on the Mac, the drive will automatically mount and you are able to view files on it. The 'get info' tab shows that there is about 5 GB of files stored on the flash drive. I have an 8 GB USB flash drive that when I plug it into my MacBook, the flash drive shows up but files disappeared from the drive.
