I would like to transfer files from Windows to Nano with USB memorystick. USB memory shows as /dev/sda. When I try to mount it I get "mount: unknown file system type vfat" I have compiled kernel with vfat and fat options and they show in modules.builtin file.
1) Is vfat listed in /proc/filesystems
2) To use any of the fat filesystems, you also need proper
nls support. (But you should get useful error messages
if that's your problem.)
vfat wasn't listed in /proc/filesystems. It seems it is not compiled, even I have selected it in menuconfig.
After several hours working I solved this:
select VFAT (and others if you need)
check the Default iocharset for fat (437)
go to Filesystems-->Native language support: select codepage 437 (United States, Canada)
save, exit and compile as usual