I am trying to create a bootable USB drive for Yosemite and the terminal is telling me /Volumes/Untitled is not a valid volume mount point. HELP!!!

In order to be a valid bootable drive, it must be formatted as Mac OS Extended (Journaled) with a GUID partition mapping

Hello mknj,

I am also attempting create a bootable usb flash drive with the yosemite installer. I have not had this error. Is it possible that the installer does not like the untitled name for the volume? after typing in my password, the computer terminal returned with:

To continue we need to erase the disk at /Volumes/Recovery.

If you wish to continue type (Y) then press return:

the name I made for the flash drive was recovery.

So far so good. I will let you know if I am successful...

FYI

my process just completed: here is what I see when it is done... (the first you saw in my earlier post. It took about 15-20 minutes.

To continue we need to erase the disk at /Volumes/Recovery.

If you wish to continue type (Y) then press return: y

Erasing Disk: 0%... 10%... 20%... 30%...100%...

Copying installer files to disk...

Copy complete.

Making disk bootable...

Copying boot files...

Copy complete.

Done.

I had the same problem as OP. The process that jturquette used / posted here worked for me.\

Note: I was trying to create a bootable Yosemite install drive, destination being a USB thumb, working in 10.10.5. I followed Apple support page's directions for drive formatting and 'create install media' operations. I received the same 'invalid volume mount-point' message in Terminal. This occurred multiple times and seemingly regardless of drive name or mounting. When I changed my destination volume name to "Recovery", as jturquette described, the remainder of the Apple-specified process worked.

Mac Pro 3,1

PNY 68GB USB3 FD

OS 10.10.5

try this

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction

I had the same issue. It turns out the external drive needed to be named untitled with a lower case "u" at the start even though the sudo command I cut and pasted had Untitled with a capital U.

Here is the sudo command I used:

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction

After I renamed the external drive to untitled it worked straight away.

Just rename the USB thumb drive to MyVolume and use the code on the site.

This worked for me. The USB drive I was using was called "untitled" and that didn't work. Then I renamed it "macOSSiera" and that didn't work. Then I renamed it "Recovery" and it worked exactly as described by jturquette.

Put the flash drive in the USB port on your Mac. Open up the Disk Utility program in the Applications folder inside the Other folder. On the left side of the Disk Utility program your flash drive will be listed. Select your flash drive then look and the bottom center of the program and it will say Mount Point: /Volumes/. The after /Volumes/ it will say the name of your flash drive. Type that into your terminal command such as

sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/UUI --applicationpath /Applications/Install\ macOS\ Sierra.app

The UUI in this command was the name of my flash drive.

This actually worked for me, I renamed the volume disk and changed the terminal input and that did the trick.....Thank you

I was getting the same "not a valid mount point error". After I reformatted it as "recovery" everything worked fine. It must have been the previous name as it had spaces in it. Thanks jturquette!

I received this 'not valid' reply from macOS when I had my "Untitled" un-mounted,

so I mounted the USB-flash drive, changed the name to "recovery" and the process completed.