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Unmount partition mac os x

First, connect the drives and mount the partitions which you do not want to mount automatically in future.

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At the prompt, paste the command:. An empty editable document will then appear in the Terminal window.

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Add any further partitions on the lines below, repeating the entire phrase but changing the Xs each time. If you wish to mount those partitions in future, you can use Disk Utility or Terminal to do it manually. Most macOS partitions are formatted in this way, but you can check the formatting of your drive in the Disk Utility application if you are unsure. If your partitions are set up differently, you must edit the command accordingly. Other file type commands are available, look up the ones you need if they are not mentioned here.

Disk utility tip: Fix ‘couldn’t unmount disk’ errors

I have verified this guide as working from OS X Although I have used this command myself and it works well, it is not recommended by Apple as completely safe. Please let me know if you found this useful below, or if you have any questions or problems regarding the process. Unmounted logical partition? More Less. Communities Contact Support. Sign in. Browse Search.

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Mount & Unmount Drives from the Command Line in Mac OS X

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