In this case, the main system files that could be taking more space and not necessary are the Time Machine backups and snapshots on Mac. All these files can hog space from your startup disk. Yet, it also includes other miscellaneous files such as drivers, volume data, applications, etc. The System Storage is the space dedicated to the MacOS itself. If you have more than one disk, then you will see them all displayed at the same time and you will need to know which one is the startup disk. Keep in mind that you will need to learn your start up disk name if you have another disk on your Mac. Now you need to click on ' Storage' and there you will see the available storage from your disk. You will find the version number on macOS, like this: Well, you can do so by clicking the Apple logo and then select the option “ About This Mac”. You now should be asking how to manage storage on Mac.

It will take more time for your Mac to start up.Ġ4 How to check the free space on your startup disk?.

Your Mac performance will deteriorate and you will notice it work slower.

There will be no space left to save future files.

Having your starting disk so full can lead to some inconvenient situations like:

However, it will still notice you again and again. This problem is quite common but it does not end on your Mac unless you make some cleaning.Ġ3 What happen if you ignore 'Your Disk Is Almost Full' alert?

You need to take action and start removing files from your main disk to fix this. This error will show up when your disk is more than 85% full. You will get this message as a warning to let you know there is left little free space on your main disk. You can add an external hard drive to keep more app and information, but mostly all the users keep just the startup disk alone. Your machine needs all this information to start up and it is the main disk drive. It contains your operating system and all the apps you have installed on Mac. In Mac, the Startup disk is a hard drive. What is the Meaning of 'Your Disk is Almost Full'? 01 What is Startup Disk?

FAQ: Common Questions about Mac Storage.

Bonus Tip: Prevent 'Your Disk is Almost Full' Situation.

10 Free Way to Clear Storage on Your Mac.

What is the Meaning of 'Your Disk is almost full'?.

We can solve 'Mac Startup Disk Full' problem with methods shown below:

My mac keeps saying my disk is full