This is because the root folder is now read-only to help prevent the accidental overwriting of critical operating system files: sudo mkdir -p /System/Volumes/Data/data/dbĪssign required permissions sudo chown -R `id -un` /System/Volumes/Data/data/db In macOS Catalina, you would need to create the data folder in System/Volumes/Data instead of /data/db.

MongoDB Installation Stepsīrew install mongodb-community Run MongoDB Community Edition MongoDB requires creating a data folder in the root directory, but with the recent OS changes, this might pose some challenges. With macOS Catalina, you can no longer store files or data in the read-only system volume, nor can you write to the “root” directory ( / ) from the command line, such as with Terminal. To give more context, Apple made some changes to the way system volumes are structured in the recent OS as seen below: This post is a guide to show the steps I followed to ensure that the installation worked seamlessly and followed the requirements for installing third-party apps on Catalina.

Recently, I had to do a fresh install of MongoDB Community Edition on a MacBook running macOS Catalina. Code Is Bae Install MongoDB on macOS Ma∙ 2 min read

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