On 08/23/2010 08:48 AM, Aaron Konstam wrote: > On Sun, 2010-08-22 at 19:05 -0500, Mikkel wrote: >> On 08/22/2010 04:38 PM, Aaron Konstam wrote: >>> >>> I am glad you solved you problem but I am amazed that default worked. >>> Hibernate saves the state of the system at the time you tell it to >>> hibernate. When you return you load back the system to the state you >>> had before hibernation. Which means to me that if you hibernate while in >>> Linux it should come back to Linux. And booting into Windows 7 should be >>> impossible. Would someone who suggested the default solution explain why >>> this works? >> I think you are confusing suspend to RAM with hibernation. When you >> have the system hibernating, it has actually shut down. When you >> boot Linux again, it checks swap to see if you saved the system >> state, and reloads it if you did. But Grub and Windows do not test >> this, so if you chose to load Windows, Grub happily does it. But it >> probably is not a good idea. >> >> You can also chose to ignore the hibernating image and do a normal >> reboot. I don't remember what you have to pass the kernel to have it >> skip the check... >> >> Mikkel > > I am always glad to know new things. Hibernate anws suspend have similar > functions in that a system state is saved on a disk or in RAM. Google > "Linux hibernate" and it seems clear that when the machine is started > the state of the system, is restored to what it was before hibernation > or suspension. If Grub does not check if a state was saved then > hibernation is worthless and I have learned something. To me what you > describe is just plain crazy. Grub is a general purpose boot loader. It does not know how to check if there is an OS hibernating. I should also add that if the BIOS supports it, and Linux know how to use it, it will resume directly from disk without Grub ever entering the picture. With Windows, you normally have to set it up before you can use it. I am not sure about Linux. I don't hibernate my systems often enough to look into all the fancy options. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
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