Cannot create bootable El Capitan USB media using "createinstallmedia" or Diskmaker X

I can't able to create bootable Sierra MacOS USB.

I was getting this error.

I was using this command to execute:

sudo /Applications/InstallmacOSSeirraBeta.app/Contents/Resources/createinstallmedia -volume /Volumes/seirraOS –applicationpath /Applications/InstallmacOSSeirraBeta.app
–nointeraction

Please give some suggestion into this.

I did this, as on link. It was all free, painless and easy:deadspin-quote-carrot-aligned-w-bgr-2')}.f_branding_on.blog-group-deadspin .editor-inner.post-content .pullquote:before,…

Was straight forward and fuss free.

Good luck

I have not tried this command, but what caught my attention is the fact that these portions of it:

OSSeirraBeta.

1. appear to include the fact that you are installing a beta version which may or may not work and which cannot be discussed here, and

2. "Seirra" is obviously spelled wrong (three times in that command).

As I said, I am not familiar with this command, but it seems to me the OS name should be spelled correctly for it to work.

DiskMaker has been updated to fix this problem, so download it and try again. Or you can try the command line tool again being sure you used it correctly.

Make your own El Capitan flash drive installer using the El Capitan tool:

You can create a El Capitan flash drive installer via the Terminal. El Capitan has its own built-in installer maker you use via the Terminal:

You will need a freshly partitioned and formatted USB flash drive with at least 8GBs. Leave the name of the flash drive at the system default, "Untitled." Do not change this name. Wait for the process to complete which will take quite some time.

Open the Terminal in the Utilities folder. Copy and paste the following command line in its entirety into the Terminal window.

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

Press RETURN, enter admin password (will not echo to the window) then press RETURN again.

You need to have the installer in your Applications folder or change the paths in the above command line.

Given the trouble you're having, why not simply install El Capitan on a USB Flash drive so that you can boot from it, then put the El Capitan installer in the Flash drive's Application folder and run it from there against the target of your choice?

Try this command line (note: the name of the USB drive

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

I used the "createmediainstaller" command and have the exact same issue.

I have used the same drive that was used to create a Yosemite installer, so I know it's not the drive. The command line reports a successful install for El Capitan, but System Preferences does not show it as a Startup Disk.

The USB drive for Yosemite created the same way immediately shows up as a startup disk option in System Preferences.

I have the same problem. I can run the "createmediainstaller" app no problem and can create bootable install images for Mavericks & Yosemite on two seperate USB flash drives.

But El Capitan doesn't work. It doesn't throw any error messages, but the drive is not bootable after.

Give this a try. I've tried it and it works.

Make your own El Capitan flash drive installer using the El Capitan tool:

You can create a El Capitan flash drive installer via the Terminal. El Capitan has its own built-in installer maker you use via the Terminal:

You will need a freshly partitioned and formatted USB flash drive with at least 8GBs. Leave the name of the flash drive at the system default, "Untitled." Do not change this name. Wait for the process to complete which will take quite some time.

Open the Terminal in the Utilities folder. Copy and paste the following command line in its entirety into the Terminal window.

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

Press RETURN, enter admin password (will not echo to the window) then press RETURN again.

You need to have the installer in your Applications folder or change the paths in the above command line.

Hey Kappy - I don't want to upset you, but you should read the thread more carefully. We are discussing what happens when the method you describe doesn't create a bootable drive.

It would be helpful if you edited or deleted your response.

I second Dave on this. Please dont take it personal. Thank you for trying to help, but your doing it wrong...

Insofar as this topic belongs to another user and you have threadjacked it doesn't offend me. Furthermore, I responded originally to this topic with a command that wasn't working. I addressed my reply to the OP in the hope it would help him. Frankly, I don't care what you two think. You don't even belong here.

i''m not going to edit or remove my reply. But I will report yours to the mods.

I just ran: diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 499.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +498.9 GB disk1

Logical Volume on disk0s2

445E0E9F-C461-4940-870C-07FF309A1CDD

Unencrypted

/dev/disk2 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *8.0 GB disk2

1: EFI EFI 209.7 MB disk2s1

2: Apple_HFS Install OS X El Capitan 7.7 GB disk2s2

Seeing the EFI 209.7MB is this telling me the installer is bootable?

Is there a way of verifying in terminal if it is bootable with having to resstart my computer??