My MacBook Air won't update
My MacBook Air won't update - I've tried everything.
MacBook Air 13″, macOS 10.15
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12.7GB? Is that it? You don't have enough space. Free up some space as soon as you can (offload at least 10GB to an external drive) and try again. The download size of 4.7GB is compressed and expands to more than that once the installation starts. 12.7GB is nowhere near enough.