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How to update my MacBook Pro (Retina, 13-inch, Early 2015) Sierra to IOS 11

How to update my MacBook Pro (Retina, 13-inch, Early 2015) Sierra to IOS 11


Posted on Feb 19, 2022 1:17 PM

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Posted on Feb 19, 2022 1:58 PM

That is a security update for Catalina MacOS 10.15.x (to be installed on a Mac already running Catalina) and it won't install on your Mac running Sierra. It has nothing to do with disk space (and note there is no mention of disk space in your screenshot).

8 replies

Feb 19, 2022 1:51 PM in response to Gautam Biswas

Gautam Biswas wrote:

How to update my MacBook Pro (Retina, 13-inch, Early 2015) Sierra to IOS 11


Your old Sierra uses the HFS+ file format...

you are woefully behind.


There is insightful information included here—

 Installing macOS on a separate APFS volume - Apple Support see this part:

What you need

Your Mac must already be using macOS High Sierra or later on an APFS-formatted startup disk. Find out which format your startup disk is using.


You are much better off stair stepping your way up to avoid issues— at least to High Sierra

High Sierra uses APFS (Apple File System format)


Big Sur requires the APFS



File system formats available in Disk Utility on Mac - Apple ...


Feb 19, 2022 1:56 PM in response to Gautam Biswas

Gautam Biswas wrote:

Thanks. I am facing issues on disk space, system is reporting space not enough, though has 145GB available. What to do?

https://discussions.apple.com/content/attachment/8a03a3c9-a35b-4377-8b0b-d426dac26df7


Makes no difference if it is not formatted as APFS...

Find out which format your startup disk is using.

How to update my MacBook Pro (Retina, 13-inch, Early 2015) Sierra to IOS 11

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