Thank you for the quick response!
I'm currently using a usb 2.0 stick and I tried all the 4 usb 2 ports aviables (2 on the front of the case and the other two on the motherboard).
Do you think that recreating the bootable usb can fix this issue?
When booting macOS High Sierra from clover, to install it, I get this screen with some white text in it.
But after few seconds this happens
Please note that I can't turn off the support for legacy USB forom BIOS because if I do this, I won't be able to see my USB key from the...