Hibernation worked perfectly well on my system until a few weeks ago, when I bought a bigger hard disk and cloned all the partitions. Then I installed and updated a few programs, and did some more things to reorganize, optimize and speed up Win2k SP4. Now apparently hibernation still works and shuts the computer down. On the windows drive, after every attempt there is a recent hiberfil.sys of the same size as the memory, and on C:, there is hiberfil.sys with linkmulti to the correct partition, also recent. But the computer never wakes up and resumes, it always boots as if there were no hibernation. Searching for the problem I discovered the "Acronis True Image Backup Archive Explorer" in the device manager, starting timntr.sys 1.1 build 15. I do not know, how long this has already been there. Deactivating it, I got the BSOD - inaccessible_boot_device - and could only reboot with the last working configuration. As TrueImage works fine, I do not intent to deinstall it, only temporarily deactivate it for testing hibernation. But the BSOD made me suspicious that there is more to that timntr.sys than a simple driver to access files on a stored image. I started to wonder, if by any chance Hibernation needs something in the MBR, which TrueImage has modified. I did a lot of googling and searching this forum, but I cannot find any answer. Anybody an idea? Thanks.