How big is the sleepimage file on a Mac?
The sleepimage file is generally the exact same size as the amount of physical RAM your Mac has. If your Mac has 2GB of RAM, the sleepimage file will also be 2GB because there are 2GB of data that need to be stored when your Mac is put to sleep. You can check the size of your sleepimage file by typing the following command into the Terminal:
When to use sleepimage and swapfile on Mac?
When your computer doesn’t have enough RAM to accomodate the memory requests of all your programs (which is almost always, this is normal), it uses these files to “write out” part of what it had in RAM. The sleepimage has a very similar use, except it’s used only when your Mac hibernates/wakes up.
How to delete / var / VM / sleepimage?
EDIT You can delete /var/vm/sleepimage safely, but it will be recreated when you put the Mac to sleep. If you run sudo pmset -a hibernatemode 0; sudo rm /var/vm/sleepimage, the Mac will use a normal sleep mode (like desktop Macs by default) and it won’t recreate /var/vm/sleepimage.
Why do I need a sleepimage file in Windows 10?
The sleepimage file is only needed for the safe-sleep function where your data is saved to the HDD before sleeping, if you want to permanently reclaim this disk space you can do so using the following commands in a terminal window.
Why does sleepimage not work on macOS High Sierra?
With macOS High Sierra, however, the sleepimage file was moved under the System Integrity Protection or SIP, which limits the system functions of the root user. In this situation the above command will trigger an error or a reply from Terminal that says “operation not permitted”.
How to delete sleepimage on macOS-Mac optimization?
At this point you’ll be prompted for the admin password. Once done the file will be erased. With macOS High Sierra, however, the sleepimage file was moved under the System Integrity Protection or SIP, which limits the system functions of the root user.
What happens if you disable Safe Sleep on a Mac?
Disabling the Safe Sleep feature means that contents in RAM will not be backed up to the drive should your Mac need to hibernate. When you start your machine back up, your Mac will perform a normal reboot without restoring windows, and opened files. Luckily, the sleepimage file can be removed without any injury.