- COULDN T UNMOUNT DISK TIME MACHINE HOW TO
- COULDN T UNMOUNT DISK TIME MACHINE INSTALL
- COULDN T UNMOUNT DISK TIME MACHINE FULL
COULDN T UNMOUNT DISK TIME MACHINE HOW TO
How to fix it when an external disk won’t unmount
COULDN T UNMOUNT DISK TIME MACHINE INSTALL
![couldn t unmount disk time machine couldn t unmount disk time machine](http://www.atarimania.com/8bit/boxes/hi_res/mule_ariola_d7.jpg)
COULDN T UNMOUNT DISK TIME MACHINE FULL
There is always a risk of losing data, and making a full backup is the only way to protect your data. How to fix ‘couldn’t unmount disk’ errorīefore you try and fix any problem with a disk, including one that can’t be unmounted, you should back it up. Essentially, the erase process has failed on your Mac.
![couldn t unmount disk time machine couldn t unmount disk time machine](https://eclecticlightdotcom.files.wordpress.com/2021/03/tmchaos01.jpg)
For example, if you try to erase or partition your boot disk in Disk Utility, you won’t be able to because macOS won’t unmount the disk. If you see an error message telling you that macOS couldn’t unmount a disk, it usually means that a process on your Mac is trying to modify your boot disk and can’t because macOS won’t allow the disk that it has booted from to be unmounted.