When you put your computer into mode (different from Sleep), Windows 11 takes everything currently open in your memory (RAM)—your browser tabs, Word docs, Spotify playlist, and code editor—and writes it directly to this file on your hard drive. Then, it completely powers off your PC.
You’re digging through your Windows 11 C: drive, trying to figure out why a 256GB SSD feels more like 100GB. You enable "Show hidden files," and suddenly a massive chunk of space is claimed by a mysterious file named hiberfil.sys .
If you have never heard of it, seeing a 6GB, 12GB, or even 20GB file can be alarming. Is it a virus? A corrupted backup? A Windows glitch?
When you put your computer into mode (different from Sleep), Windows 11 takes everything currently open in your memory (RAM)—your browser tabs, Word docs, Spotify playlist, and code editor—and writes it directly to this file on your hard drive. Then, it completely powers off your PC.
You’re digging through your Windows 11 C: drive, trying to figure out why a 256GB SSD feels more like 100GB. You enable "Show hidden files," and suddenly a massive chunk of space is claimed by a mysterious file named hiberfil.sys .
If you have never heard of it, seeing a 6GB, 12GB, or even 20GB file can be alarming. Is it a virus? A corrupted backup? A Windows glitch?
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