Ventoy on Linux - need to format usb stick as ext3/4

[longpanda]

When you use the default exfat file system please make sure that you wait the cache flushed to the USB before you reboot or plug-out the USB drive.
Or you can do this:
1. Copy the ISO file to the USB drive.
2. run sync cmd
3. plug-out the USB drive
4. plug-in the USB drive
5. md5sum the ISO file in the USB drive to make sure that the ISO file is right
6. reboot and test again.