The hidden website cache takes much space on the startup disk. However, what’s going on if you see a pop-up alert saying Your startup disk is almost full?Īt this time, you should know what is taking up space on the startup disk of your Mac and then take some measures to clear the startup disk. Most of the time, you should not worry about the disk space issue because macOS always do work online. But they are the Pro series, which are not widely used. As of 2020, Apple has improved the disk capacity and the maximum disk size can reach up to 8TB. What Is Taking Up Space on Your Mac Startup Disk?Īs you know, a Mac computer’s disk is usually not as large as a Windows computer’s disk. If the operating system on the disk is corrupted or even the startup disk is damaged, your Mac computer will not boot normally. It is an important disk on your computer. Like a Windows startup disk, the startup disk on your Mac is the disk that saved the operating system on your Mac. If You Delete Some Important Files on Your Mac by Mistake.What Does It Mean When Your Startup Disk Is Full?.What Is Taking Up Space on Your Mac Startup Disk?.