[Last Call] Learn how to a build a cloud-first strategyRegister Now

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 7906
  • Last Modified:

How to change the BIOS time on a Hyper-v guest vm without changing host's time?

For testing purpose I need to modify the date/time in the BIOS of a virtual machine created on hyper-v server but always failed.
After some searching, it seems like there is no way I can do it unless I modify the host's date/time which I don't want to.
Can someone tell me how to do it withouth changing the time on hyper-v host server?
Thanks
0
brothertu
Asked:
brothertu
1 Solution
 
Joshua_PetersCommented:
When you boot up the guest you should be able to enter the bios during startup. Then you can change the bios time without changing it on the host. Change the post delay time in the os so it allows you to have time to see which key it is to access the Bios.
0
 
shanyuenCommented:
http://www.experts-exchange.com/Software/Virtualization/Q_24166919.html
http://www.markwilson.co.uk/blog/2009/02/hyper-v-qa.htm

Hyper-V VMs do still have a virtual machine BIOS; however, all of the BIOS features (e.g. numlock setting, boot device order, etc.) may be set in the virtual machine configuration or using a script. As a conseqence of this, Microsoft has removed the ability to access the BIOS at boot time.
0
 
Greg HejlCommented:
in hyper v manager - click on vm - open settings - go to integration services for vm (bottom left) - turn off time synchronization -
 login to vm - open services,  stop Hyper-V time synchronization service - change to manual -
 go to vm control panel > date and time >turn off internet time setting - change time and date on vm
2
 
brothertuAuthor Commented:
thanks for all the replies.
Joshua,
I can't enter the BOIS setting from bootup, tried several keys: F2,F10,Esc, Del.

Greg,
My problem is that, there is no OS installed on the virtual machine. And I need to change the BIOS time before install OS.

Shanyuen:
Although the news from your link is negtive but I guess this might be the truth that there is no way to get into vm BIOS during bootup. I wonder if you have seen any official clarificaition from Microsoft?

0

Featured Post

Vote for the Most Valuable Expert

It’s time to recognize experts that go above and beyond with helpful solutions and engagement on site. Choose from the top experts in the Hall of Fame or on the right rail of your favorite topic page. Look for the blue “Nominate” button on their profile to vote.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now