Thanks MaLdon,
My sistem was running correctly with a 200Mb EFI FAT partition, NTFS partition with WINDOWS10 and APFS partition with Mojave.
After several days of use without any kind of trouble, the EFI partiton disappears, apparently inglobated into the APFS container, but accessible only from USB installer Vlover and not the clover that appears booting from the HD...
Strange, uh?
Apple forever, even if not on Apple.