Re: is booting an OS without power cycling a host possible?

[Peter Van Wieren]

Thanks, maybe I will try kexec next weekend.  

My situation is probably quite rare, so I'm thinking there is no need to raise 
a feature request for a defining a "use only once" choice in the grub menu.

Best Regards,
Peter


--- On Mon, 3/19/12, Markus Halm <address@hidden> wrote:

> From: Markus Halm <address@hidden>
> Subject: Re: is booting an OS without power cycling a host possible?
> To: address@hidden
> Date: Monday, March 19, 2012, 7:24 AM
> > I hoped I could transition from
> "A" to "B", without power cycling the host or editing the
> MBR, by running grub from the command line as root. In a
> root shell I started grub and planned to issue the
> commands:
> 
> I'm not sure wether it's possible using grub. At least
> judging from the replies so far ... no. ;)
> 
> BUT what could be helpful: kexec! At least I already
> successfully changed the kernel *within* a distribution
> without having to reboot. But I don't see any reason why it
> shouldn't work with changing to another distro this way. You
> just give the corresponding params and kexec's gonna do the
> magic for you. :)
> 
> HTH: http://www.ibm.com/developerworks/linux/library/l-kexec/index.html
> 
> Regards, Markus
> 
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