title: Deleting Old Installers
tags: macos admin

I had the problem that two installers for Macos were in the Trash, but couldn't be deleted.\
Trying to delete from the command line with sudo just yielded an `Operation not permitted` error.

The soluction [came from this apple discussion](https://discussions.apple.com/thread/8643378?sortBy=best)
1. Reboot into Recovery (reboot and hold down Apple-R until you see the Apple logo)
2. Open a Terminal (Utilties menu)
3. Type `csrutil disable` to disable the System Integrity Protection that is blocking deleting the installers.
4. Reboot
5. Empty Trash
6. Reboot into Recovery again
7. Open a Terminal
8. Type `csrutil enable` to re-enable SIP
9. Reboot.