Hi, i am facing issue of the clear install of mac os sierra using USB

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Level 1

10 points

Hi, i am facing issue of the clear install of mac os sierra using USB

Hi,

I am facing issue of the clear install of mac os sierra using USB , It is throwing me an error while making the device bootable

I Have used 32GB Pendrive

the final error was

Sharat-Kumar-Reddy-Gs-MacBook-Pro:~ sharatkumarreddyg$ sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ macOS\ Sierra.app

Ready to start.

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

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...

Couldn't mount dmg /Volumes/Install macOS Sierra/Install macOS Sierra.app/Contents/SharedSupport/InstallESD.dmg (error code 110)Mount of outer dmg failed.

Done.

Sharat-Kumar-Reddy-Gs-MacBook-Pro:~ sharatkumarreddyg$

It would be very thankful if someone can help me in this issue.

Regards,

Sharat

MacBook Pro, Mac OS X (10.7.4)

Posted on Oct 15, 2016 3:21 AM

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Answer 1

Aug 22, 2017 12:15 PM in response to sunnysharat

I just ran into the same issue and was able to fix it. The problem was that the partition "Scheme" for my flash drive was "Master Boot Record" which is an ancient partition scheme used by Windows. Macs cannot boot from drives with such a partition scheme. Erase your flash drive and pick any of the other two schemes (I did GUID which does not match screenshot below).

After that, createinstallmedia succeeded. I have yet to use the USB drive but I assume it will work fine.

One would hope createinstallmedia would perform the check before wasting several minutes and give you a helpful error message.

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Answer 2

lllaass

Level 10

210,513 points

Oct 15, 2016 7:20 AM in response to sunnysharat

Try using this app to make a bootable USB media

http://liondiskmaker.com/

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Answer 3

sunnysharat Author

Level 1

10 points

Oct 15, 2016 7:53 AM in response to lllaass

Hi ,

It din't work.

The disk could not be created because of an error: An error occured: -10006. Finder got an error: Can’t set disk "Install macOS Sierra" to "DMX_Workdisk".

The above error was shown

Regards,

Sharat

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