Delete all the unused files from your computer.Things to consider for more space on your computer: Which obviously means you need to start clearing things up to make more room. When the startup disk is full, you will receive a message warning you about the space left. Even though multiple start up disks are possible, but the majority will rely on one. The primary drive will have the OS’s start up disk while the other may store files.

However, the vast majority of Mac users may have one disk, but power users tend to have more.Ī Mac, which has more than one disk, will have the storage between them divided. Each one of the partitions stores data for your Mac, which includes things like OS files and applications. Each Mac or Mac Book Air consists of more than one partition. In the MacBook Air, the startup disk is a volume of the drive, which contains mainly macOS system files. So, the first step should be to clean things up.Ĭlean startup disk in MacBook Air for More Storage Space Plus, naughty third-party apps may also bog down system resources. The general rule of thumb with Macs is that the more stuff you have on the disk, the slower it becomes. One of the main reasons why many people complain about their MacBook slowing down is that files and applications take up too much space on the hard drive.

Even though macOS X is widely considered to be smoother, faster and much simpler to operate than Windows OS, it still requires the maintenance to keep it running optimally. If you select a network install image, that will trigger a reinstall of macOS and may erase your data.A slow Mac performance is one of the most common complaints by MacBook Air users. Important note: When you select a startup disk, ensure you are selecting a network startup volume and NOT a network install image.

Select the icon of the disk you want to use.

Click Startup Disk on the right (you may need to scroll down.).

The next time you restart your computer, it starts up from the disk you selected.

Click the Continue button (on a Mac with Apple silicon) or the Up arrow (on other Mac computers).

When you see the available startup disks, select the one you want.

On other Mac computers : Press and hold the Option key and the power button simultaneously.

(For Mac mini, wait for the system indicator light to turn amber.)

On a Mac with Apple silicon : Press and hold the power button until “Loading startup options” appears.

How to clean macbook startup disk