Bootable Installer for macOS

Question

Level 1

13 points

Bootable Installer for macOS

I have been attempting to refresh new OS bootable installers for family machines. I had problems previously with earlier OS but can't recall how these were resolved. I've been following the Apple Support instructions as per the link below:

Create a bootable installer for macOS - Apple Support

However, I'm receiving an "(error code 110) failed to mount BaseSystem" error in making the disk bootable in terminal which renders my installer disk as unrecognised at start up. macOS recognises the device in general operation and there are the expected High Sierra installer contents.

Full script from terminal is as follows:

Iains-MacBook-Pro:~ iainab$ sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MACOSX

Password:

Ready to start.

To continue we need to erase the volume at /Volumes/MACOSX.

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 High Sierra/Install macOS High Sierra.app/Contents/SharedSupport/BaseSystem.dmg (error code 110)Mount of BaseSystem failed.

Done.

Any thoughts and suggestions as to resolution welcome.

From what I have read on this type of issue it's not restricted to High Sierra and as I say I had similar previously.

MacBook Pro (Retina, 13-inch, Late 2012), macOS High Sierra (10.13)

Posted on Sep 26, 2017 10:30 AM

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Answer 1

iainab99 Author

Level 1

13 points

Sep 28, 2017 4:00 AM in response to iainab99

Thanks for the responses.

I couldn't get Diskmaker or Boot Buddy to successfully create a start up disk on my MacBook Pro (late 2012 model) much like the situation with the default Apple guidance.

However, when using a MacBook Pro (2017 model) with Diskmaker then all worked ok. I didn't try Boot Buddy on the newer MacBook so can't comment on that app's success.

It's curious though how an older MacBook won't but a newer MacBook will work when ostensibly the operating systems are identical with both running macOS High Sierra.

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Answer 2

putnik

Level 4

1,185 points

Sep 26, 2017 10:42 AM in response to iainab99

A well known developer on these forums has produced an app to help with this process. It's called Boot Buddy and his website is: https://sqwarq.com

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Answer 3

Eric Root

Level 10

685,257 points

Sep 26, 2017 11:50 AM in response to iainab99

You can make a bootable USB stick to install using this free program which will do all the work for you.

Bootable USB Flash Drive – Diskmaker X

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Answer 4

EMKA_RUS

Level 1

4 points

Nov 8, 2017 4:30 AM in response to iainab99

Last login: Wed Nov 8 14:30:34 on console

iMac-Meri-Cickisvili:~ Anna$ sudo /Applications/kedos.app/Contents/Resources/createinstallmedia --volume /Volumes/flash --applicationpath /Applications/kedos.app

Password: ***********

Ready to start.

To continue we need to erase the volume at /Volumes/flash.

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 High Sierra/kedos.app/Contents/SharedSupport/BaseSystem.dmg (error code 110)Mount of BaseSystem failed.

Done.

iMac-Meri-Cickisvili:~ Anna$

Вот такая же проблема при создании загрузочной флешки для установки mac os High Sierra через терминал. Если кто-то знает как решить эту проблему, отпишитесь.

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