crwdns2934241:0crwdne2934241:0 Mark

crwdns2934249:0crwdne2934249:0:

I can't go in Boot Manager since I updates my GPU to an RX580.  So I tried all the codes with 'sudo' infront of it. But this is not working. What can I do more?

crwdns2915684:0crwdne2915684:0:

open