My usb flash drive is not recognizable after installation.

Ok so, after the installation of ISO file (macOS) i have discovered that i can t attribute a letter to macOS partition ( I managed to attribute a letter to EFI partition) and the EFI partition is the single one i can see in ‘This PC’. Anyway my BIOS doesn t recognize my flash drive because of this.


did you try to boot from that flash drive? That should work.
Windows by default is not able to see the partitions for mac and linux.

In case you want to use your drive again for file transfer, you can format it from the build in Disk manager tool on Windows. If that does not work for any reason, you can recover your drive as described here: Etcher broke my USB stick … or did it?