Probably better way to disable Hibernate (Fast boot)

[midncircus]

Hi. Currently the way to disable hibernation is:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Power] "HiberbootEnabled"=dword:00000000

which is OK, but it keeps and locks hiberfil.sys image file in C:\ root folder from deletion which grows as large as 40% of RAM.

Using this method

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power] "HibernateEnabled"=dword:00000000

disables Fast boot as well but also releases hiberfil.sys to be deleted (although you have to do it manually after enabling to Show system files). As a side effect it also removes Hibernate option from Windows power menu which may be beneficial or detrimental depending wether you use it manually or not.

[homandr]

If the goal is to disable hibernation completely, a better way to do it with this command (needs to run elevated):

powercfg -h off

As a bonus, it deletes the hiberfil.sys file automatically.