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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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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Answer 1

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dialabrain

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122,903 points

Feb 17, 2021 3:13 PM in response to Carlosevasco

Big Sur requires 35.5GBs to install.

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

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Answer 2

Carlosevasco Author

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8 points

Feb 18, 2021 10:09 AM in response to dialabrain

Thanks, Dialbrain!

I went up to storage management, deleted a lot of old stuff, send some to the i-cloud, and freed 40GB.

Then, I downloaded the upgrade Big Sur 11.2.1, and it worked!

Thank you, Carlosevasco

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Answer 3

dialabrain

Level 10

122,903 points

Feb 18, 2021 10:23 AM in response to Carlosevasco

You're welcome.

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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?

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