Maybe many novices will choose partitions or install dual systems when using Mac Apple computers, but how to delete these partitions if they are not needed later? macw will introduce how to delete disk partitions and dual system partitions on Mac computers today.
First find Utilities in Applications and open the folder. 
Then select Disk Utility to open. 
Select the disk to be modified on the left, and then click Partition on the upper menu on the right. On the right, we can see that this disk contains two partitions. 
If we want to delete the partition named Windows at the bottom, click to select this area, and you can see the plus and minus signs at the bottom, here we click the minus sign. 
The system will prompt you to confirm to delete the partition. We chose to remove, and the partition was deleted after waiting for a while. In this way, the Windows system is deleted along with the partition. 
Finally, click the Apply button below to save the settings.