Black screen with white underscore, stuck on boot

Discussions related to using VirtualBox on Windows hosts.
Post Reply
Rask
Posts: 3
Joined: 14. Feb 2021, 04:09

Black screen with white underscore, stuck on boot

Post by Rask »

Hi, just installed oracle vm and tried installing ubuntu 18.04 and 20.04 with 16g ram, newest version of oracle vm, storage given about 100gb etc.

As the name of the thread suggests, I get stuck on a black bootup screen with white underscore flashing for a while. Here is the log from the vm. If someone could help me out, it would be amazing. Thanks.
Attachments
ubuntu log.txt
(74.13 KiB) Downloaded 36 times
mpack
Site Moderator
Posts: 39134
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Mostly XP

Re: Black screen with white underscore, stuck on boot

Post by mpack »

00:00:07.139395 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:07.175311 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...
You have Hyper-v enabled. See the last post in FAQ: I have a 64bit host, but can't install 64bit guests.
Rask
Posts: 3
Joined: 14. Feb 2021, 04:09

Re: Black screen with white underscore, stuck on boot

Post by Rask »

mpack wrote:
00:00:07.139395 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:07.175311 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...
You have Hyper-v enabled. See the last post in
So I've gone to that post, typed in the command and executed a cold boot as suggested. Went into control panel to make sure that windows hypervisor platform was unchecked.

When I ran the VM again, deleted everything and reinstalled on Oracle vm. I still got stuck on the same thing. And when I went to go check on the log, it said

NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

again. Not sure what to do. Here is the second log.
Attachments
ubuntu log 2.txt
(73.96 KiB) Downloaded 11 times
Rask
Posts: 3
Joined: 14. Feb 2021, 04:09

Re: Black screen with white underscore, stuck on boot

Post by Rask »

Nvm, I have WSL 2 which enables Hyper v...
scottgus1
Site Moderator
Posts: 20945
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows, Linux

Re: Black screen with white underscore, stuck on boot

Post by scottgus1 »

Glad you figured out the cause. Have fun!
Post Reply