Trouble creating bootable partion on external drive

Question

Trouble creating bootable partion on external drive

I use the createinstallmedia command copied from Apple's support page. It give the response (my volume) "is not a valid volume mount point." I've verified that the command is entered correctly and that the volume name (a partition on an external HD) is correct as well.

sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/Mac OS Installer

Password:

/Volumes/Mac is not a valid volume mount point.

What am I doing wrong?

Many thanks,

John

iMac, OS 10.14.6 (Mojave)

iMac 27", macOS 10.14

Posted on Jan 15, 2020 3:42 PM

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Answer 1

Top-ranking reply

Barney-15E

Level 10

116,662 points

Jan 15, 2020 5:46 PM in response to John Stenmark

You are not escaping the spaces. Spaces in the shell are interpreted as the end of the command or argument separator.

It would be /Volumes/Mac\ OS\ Installer

However, it will rename the volume regardless what you name it, so just rename it MyVolume like in the command. Then, you can just copy/paste the command.

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Answer 2

HWTech

Level 9

60,440 points

Jan 15, 2020 7:26 PM in response to John Stenmark

Another option to escaping the spaces is to put the path in double quotes like this:

sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume "/Volumes/Mac OS Installer"

You can also just drag & drop the volume from the Finder onto the Terminal window so it auto-fills the correct path for you.

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Answer 3

Jan 16, 2020 2:56 PM in response to Barney-15E

That did it. I changed the volume to MyVolume, ran the command, and then changed the volume label back to what I wanted.

Many thanks for the quick and helpful reply.

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Trouble creating bootable partion on external drive

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