Re: hibernate, then start Windows [SOLVED]

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  On 08/31/2010 06:38 AM, Greg Woods wrote:
> This is in regard to the issue that, when Linux is hibernated, upon
> reboot the thaw starts immediately and the grub menu is not presented.
>
> I am now absolutely convinced this is not a BIOS issue, it is a kernel
> or boot loader issue.
>
> I worked around it by adding a level of indirection to the boot process.
> To do this requires that you have at least one Linux partition that is
> not / or /boot.
>
> The basic idea is that Linux is booted with a chainloader, same as
> Windows. So the main grub menu gives you a choice of Linux or Windows,
> and both are implemented with "chainloader +1" stanzas. It works, but I
> don't recommend trying this unless you are fairly familiar with how the
> boot loader works, and are comfortable reinstalling the boot loader from
> a rescue CD/DVD if something goes wrong.
>
> The high-level instructions go like this:
>
> 1) In your extra Linux partition, create "boot" and "boot/grub"
> directories.
> 2) Copy the contents of /boot/grub to this new grub directory.
> 3) Edit the boot/grub/grub.conf file in this new directory so that
> Windows and Linux are presented as "chainloader +1" stanzas.
> 4) Install grub in the master boot record, pointing to this partition
> 5) Install grub in the first sector of your root partition, with the
> usual kernel choices.
>
> When this is done, at boot time you get a choice of Linux or Windows. If
> you select Linux, the second boot loader comes up with the usual choice
> of kernels. If Linux is hibernated, you can then boot and run Windows
> just fine (my Windows install doesn't have a hibernate option so I
> wasn't able to test hibernating Windows in this scenario). If you boot
> again and select Linux, instead of getting the choice of kernels, it
> immediately resumes the hibernated image. This is how I *want* it to
> work, so I have left it this way.
>
> Suppose you have this:
>
> /dev/sda1 Windows
> /dev/sda2 Linux root
> /dev/sda3 Linux /local
>
> Then /boot/grub gets copied to /local/boot/grub, then
> edit /local/boot/grub/grub.conf so that you have something like this:
>
> title Linux
>     root (hd0,1)
>     chainloader +1
> title Windows
>     root (hd0,0)
>     chainloader +1
>
> Then run:
>
> # grub
> [...]
> grub>  root (hd0,2)
> grub>  setup (hd0)
>
> This loads the master boot record that points to /dev/sda2, the
> chainloader configuration.
>
> Now edit /boot/grub/grub.conf and remove the Windows stanza (you don't
> need it here any more). Then run:
>
> # grub
> [...]
> grub>  root (hd0,1)
> grub>  setup (hd0,1)
Why is this last step (grub)  necessary?
It is already as it should be because it is the original boot/grub
and needs no re-installation.

> This loads grub into the first sector of the Linux root partition,
> pointing at that partition and presenting the usual choice of kernels.
>
> This has worked great for me. I can now hibernate Linux, boot into
> Windows, and later resume from the hibernated Linux image.
>
> --Greg
>
>

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