0

I installed second Windows 10 on my laptop (now it's dual boot with two Windows 10 installations). The newer installation is set as default and first in the Windows Boot Manager menu. But when I restart the laptop, it doesn't show the Windows Boot Manager for 30 secs (the time you have to select the OS before it selects the first listed one), and instead it shows a black screen (with display backlight turned on) for 30 secs and then boots into the default OS. I tried pressing enter during the black screen phase and it boots right away to the default OS, so obviously the menu is technically there but the GUI is not shown.

Any ideas?

This might be related to the hibernate/fast boot option in Windows 10, since the 30 sec black screen appears only when I restart my laptop, and not when I turn it off completely and turn it on afterwards (in this case it shows normal Windows Boot Manager for 30 secs). I'm thinking of turning the timer off and try booting into the default OS right away without Windows Boot Manager menu, but I'm afraid it would complicate things further. Anyhow, I think I don't need the older installation at this point and I think I'll completely delete it

user1274114
  • 1

1 Answers1

0

You shouldn't be using fast boot in dual-boot.

To disable (in both Windows versions):

  • Run Power Options

  • Click Choose what the power buttons do

  • Click Change settings that are currently unavailable

  • Click "Turn on fast startup (recommended)" so that the check-mark disappears

  • Click Save changes.

harrymc
  • 498,455