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For instance, 'Temporary Remote Desktop files' and 'Temporary Sync Files' may appear only under certain computer configurations, differences such as Windows Operating System and use of additional programs such as Remote Desktop. The option of removing hibernation data may not be ideal for some users as this may remove the hibernate option.
powercfg must be run from an elevated command prompt, and, under Windows XP, it requires workstation Administrator or power user rights. Power Schemes are configured on a per-user basis. The most common cause of problems with power saving and hibernation on Windows systems is an incompatible device driver.
Windows Vista introduced a hybrid sleep feature, which saves the contents of memory to hard disk but instead of powering down, enters sleep mode. If the power is lost, the computer can resume as if hibernated. Windows 7 introduced compression to the hibernation file and set the default size to 75% of the total physical memory. [18]
In particular, this includes the registry, page file and hibernation file. Prior to the Windows Vista release, only one volume could be analyzed or defragmented at a time and only one instance could run. [8] Only local volumes can be defragmented; network volumes are not supported. [8] The GUI version prior to Windows Vista cannot be scheduled.
This approach combines the benefits of sleep mode and hibernation: The machine can resume instantaneously, but it can also be powered down completely (e.g. due to loss of power) without loss of data, because it is already effectively in a state of hibernation. This mode is called "hybrid sleep" in Microsoft Windows other than Windows XP.
Try it yourself; hibernate Windows, then try to enter your BIOS setup when you turn it back on (usually by pressing the DEL key on startup). It won't work. Now try again; Hibernate windows, but this time, pull the power plug on your computer, remove the battery, and press and hold the power button for 30 seconds to empty the capacitors.
In Windows XP only, there is a "Shut Down" menu that provides access to Standby, Hibernate, Turn off, Restart, Log Off, and Switch User. This is because, by default in Windows XP, pressing Ctrl + Alt + Delete opens the Task Manager instead of opening a dialog that provides access to the Task Manager in addition to the options mentioned above.
The Free Edition (limited to Windows 32-bit Win2000 / XP / 2003) is able to use 'invisible' RAM in the 3.25 to 4 GB 'gap' (if your motherboard has i946 or above chipset) & is also capable of 'saving to hard disk on power down' (so, in theory, allows you to use the RAM disk for Windows XP swap file and survive over a 'Hibernate').