FN + F2 ,F8,F10,Del kombinasyonları ile dener misiniz ?
Yabancı bir kaynaktan eriştiğim bilgiler şu yönde bunu da dener misin ?
a. Launch a terminal window.
(You can launch a terminal window like this: *Click*)
b.
Copy/paste the following command line into the terminal:
xed admin:///etc/default/grub
Press Enter.
c. Find the following line:
GRUB_TIMEOUT_STYLE=hidden
Change "hidden" into "menu", so that it becomes:
GRUB_TIMEOUT_STYLE=menu
d. Then find this line:
GRUB_TIMEOUT=0
Change "0" into "5", so that it becomes:
GRUB_TIMEOUT=5
With that, you set the time during which the menu will be shown to five seconds, which should be more than enough.
e. Save the modified file and close it.
f.
Copy/paste the following command line into the terminal, in order to actually apply the configuration changes you've made:
sudo update-grub
Press Enter. Type your password when prompted.
In Ubuntu this remains entirely invisible, not even dots will show when you type it, that's normal. In Mint this has changed: you'll see asterisks when you type. Press Enter again.
g. You're done! Test it by a reboot.