I do not have any experience with that particular Garmin model, but you have to put it into mass storage mode. You can try using this procedure, but if this does not work on your particular model, just Google the steps for your specific model.

Start NUVI by itself and go to Volume Screen.
1. Press the upper right hand corner of screen for 10 seconds.
2. The Developers Screen will pop up
3. Scroll down to MTP SETTINGS


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4. Change from AUTO DETECT to MASS STORAGE
5. Shut down NUVI and hookup to Computer USB cable
6. Start NUVI and it should recognized as an external drive which is plugged into the computer.
steynja Reviewed by steynja on . How to preform a CHKDSK on a Garmin Nüvi 2567LMT in Windows 10 Hello all, After a 2 day long discussion with Garmin Support about that my Nüvi 2567LMT with Internal Storage 2,71gb from 7,05gb and a 16gb SanDisk class 10 SDcard not willing to install Europe Nort+South 2019.20 amps. I ask here the forum members for help. Garmin sent me a email to preform a Check Disk on my Garmin Device to see if there are any corrupt files or some kind of error inside my device. They sent me what i need to do for this Check Disk: Press Windows+E and look for the Rating: 5