powercfg.sys

Discussions about powercfg.sys focus on disabling the Windows hibernation file to reclaim hard drive or SSD space. The file is managed through the powercfg.exe command-line tool, specifically using the -h off switch to turn off hibernation and remove the associated hibernation.sys file. Users also note that after disabling hibernation in the power profile, a disk cleanup can recover additional space by removing old installation files. The tag covers practical steps for freeing up storage on Windows systems by controlling power management settings.