On 08/16/2015 12:01 AM, Fanhenglong wrote:
>  
> In uefi boot mode I can’t install windows or linux guest os on mbr
> partition,
> 
> Maybe uefi only supports booting from mbr and can’t install on mbr?

Windows and most Linux distributions have their own prohibitions against
installing to MBR disks. Your description is a little unclear, but
you're probably running into this issue.

Earlier, you wrote:

> I can’t convert mbr to gpt,

Why not? The OS installer should permit you to do this, although in some
cases you'll need to jump through some hoops to do it. (Note that this
may destroy other OSes already installed to the disk, or at least render
them unbootable until an EFI-mode boot loader is installed.)

-- 
Rod Smith
rodsm...@rodsbooks.com
http://www.rodsbooks.com

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