npm

f3

Test flash memory devices for errors and measure write/read speed

brewmacoslinux
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Source

About

Test various flash cards

Commands

f3writef3read

Examples

Write test files to a mounted flash drive to detect counterfeit cards$ f3write /mnt/usb
Read and verify test files to measure actual speed and find errors$ f3read /mnt/usb
Quick test with fewer files for faster verification$ f3write --quick /mnt/usb && f3read /mnt/usb