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Not enough space to install mac OS Big Sur

Hi I having trouble to install Big Sur on my MacBook Pro 250GB, the actualisation is already downloaded, and I have 23GB of free space but the Install APP is asking 3GB more.

I have an iCloud with 2TB with 1TB still free, my Bin is empty, I d'ont have much apps, except Microsoft office, Skipe and Crhome, that's all. All my filles are in iCloud Drive or Photos (That is all ready seamless working with iCloud), I want every file there, there's nothing unwanted. My Desktop is empty.

Why is not iCloud Drive freeing more space on my Mac for me to install Big Sur, doesn't it should work seamless?


My flash storage says:

iCloud : 99.89GB

Apps : 22.8GB

Mail : 4.8GB

Music Creation : 2.39GB

System : 11.33

Others : 75.64

Available : 33.34

MacBook Pro with Touch Bar

Posted on Dec 19, 2020 11:18 AM

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Question marked as Top-ranking reply

Posted on Dec 19, 2020 11:40 AM

You don't have enough free space, just as the message says.

How to upgrade to macOS Big Sur - Apple Support

"If upgrading from macOS Sierra or later, macOS Big Sur requires 35.5GB of available storage to

upgrade. If upgrading from an earlier release, macOS Big Sur requires

up to 44.5GB of available storage. To upgrade from OS X Mountain Lion,

first upgrade to OS X El Capitan, then upgrade to macOS Big Sur."

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


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4 replies
Question marked as Top-ranking reply

Dec 19, 2020 11:40 AM in response to alexsandre128

You don't have enough free space, just as the message says.

How to upgrade to macOS Big Sur - Apple Support

"If upgrading from macOS Sierra or later, macOS Big Sur requires 35.5GB of available storage to

upgrade. If upgrading from an earlier release, macOS Big Sur requires

up to 44.5GB of available storage. To upgrade from OS X Mountain Lion,

first upgrade to OS X El Capitan, then upgrade to macOS Big Sur."

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


Not enough space to install mac OS Big Sur

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