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Can't create folder at root directory

Hi all,


After i upgade to catalina, i try create folder at root directory but get error.

sudo mkdir /app

Password:

mkdir: /app: Read-only file system


Please help me resolve it. Many thanks.

Posted on Oct 9, 2019 10:14 AM

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Question marked as Top-ranking reply

Posted on Oct 9, 2019 11:49 AM

VikingOSX wrote:

You cannot resolve it. Catalina put the operating system and operating system installed applications on their own read-only partition. Neither root nor sudo privileges are going to let you modify it. Welcome to enhanced operating system security.

That may be so, but there is (obviously) a logical equivalent in how the separate partitions are logically presented as a single unit. I've tried some suggestions from the web which supposedly worked with the developer previews but don't appear to do so with the release.


For better or worse in the corporate development environment I interact with I have a need to be able to mount (or provide a link to a separate mount location) remote storage whose path begins with a specific name under the root. Not being able to do so is an annoyance at best.


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3 replies
Question marked as Top-ranking reply

Oct 9, 2019 11:49 AM in response to VikingOSX

VikingOSX wrote:

You cannot resolve it. Catalina put the operating system and operating system installed applications on their own read-only partition. Neither root nor sudo privileges are going to let you modify it. Welcome to enhanced operating system security.

That may be so, but there is (obviously) a logical equivalent in how the separate partitions are logically presented as a single unit. I've tried some suggestions from the web which supposedly worked with the developer previews but don't appear to do so with the release.


For better or worse in the corporate development environment I interact with I have a need to be able to mount (or provide a link to a separate mount location) remote storage whose path begins with a specific name under the root. Not being able to do so is an annoyance at best.


Can't create folder at root directory

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