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I just bought a new MacBook Air 2017 13 inch 8 GB with Catalina. The updates downloaded BigSur for six hours, and then the installer says it needs 3 GB more to install. How come?

What can I do to install BigSur? I bought this model after being told it is eligible for BigSur, and I have verified that in the list of compatible models. But the installer says there is not enough storage to install and it needs 3 GB more.

MacBook Air 13″, macOS 10.15

Posted on Feb 17, 2021 3:08 PM

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Question marked as Top-ranking reply

Posted on Feb 17, 2021 3:13 PM

Big Sur requires 35.5GBs to install.

How to free up storage space on your Mac - Apple Support

3 replies

I just bought a new MacBook Air 2017 13 inch 8 GB with Catalina. The updates downloaded BigSur for six hours, and then the installer says it needs 3 GB more to install. How come?

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