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But what about that macOS Mojave VM that you use to keep some old 32-bit Mac apps available? While those old apps are important, you only use them a couple of times a month. Now, if you use that VM every day, that is not an unreasonable storage commitment. Even a basic install of Windows 10 with Office for Windows will take up more than 21GBs on your Mac’s internal drive. Virtual machines for Parallels Desktop on your Mac can be pretty large.
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To get around that problem, hold down the Command + R keys when you turn on your Mac and let go when the logo appears.
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If you want to format your Mac's system drive, you can't do that when the Mac is running normally because the drive is in use by the operating system. Usually, you'll want ExFAT, which is the default for the MacOS. Select the drive you want to format and then choose “Erase.”Ĥ. At the top of the window, click "Erase."ĥ. In the pop-up window, choose the file system you want to use.
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