Windows XP will do both suspend-to-disk (hibernate) and suspend-to-ram (sleep/stand-by). Which one it does when you close the lid is determined by the active power profile. It will only ever do one or the other - there is no hybrid mode. The except is if your power profile says something like "suspend-to-RAM after 30 minutes, suspend-to-disk after 2 hours". Then XP will wake up after being suspended to RAM for 90 minutes to suspend itself to disk.
You can compare the 2 by finding the 2 options on the "shutdown" box. If your XP system is using the welcome screen you will have a fancy graphical "shut down" box that has 3 buttons (or 4 if your system has a wide screen). The first of the 3 buttons should say "Stand By". Pressing this suspends to RAM. If you hold down SHIFT while this shutdown box is active, the "Stand By" button changes to "Hibernate" (which is the extra 4th button you get if you've got a wide screen monitor attached). If you get the box with the shutdown options in a dropdown list, then the same options should be available. The standby option will only be present if Windows thinks your hardware supports it. And hibernate will only be available if it is enabled in the "hibernate" tab of the "Power Options" control panel applet. I hardly ever shut down my XP system using a conventional shutdown - I always try to use hibernate since it lets me disconnect the power reasonbly quickly, then when I need to switch the system back on it is ready to do useful work much faster than if I had cold-booted it. I've been doing this since Windows 2000 without too much incident so having it on x86 Solaris would be really useful. Cheers Andrew. > > > I am wondering now, why XP suspends so slow and > > write > > > so lot of things to the disk. I saw my disk > keeps > > on > > > writing when suspend XP and I don't know what it > > > writes. > > > > Are you sure that windows xp is using > > suspend-to-ram? > > Or does it use suspend-to-disk? With > > suspend-to-disk > > it would write the contents of memory to disk and > > powers > > of the system (including the ram), with > > suspend-to-ram > > system context is stored in ram and ram remains > > powered > > on while the system is sleeping. > > > > (btw Solaris does not yet support suspend-to-disk) > > If xp uses suspend-to-disk strategy, how could it > resume immediately after I open the lid of my laptop? > Maybe it uses both to-ram and to-disk, just guess. -- This message posted from opensolaris.org
