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Couldn't install Bootloader/ High Sierra

Joined
May 15, 2016
Messages
4,289
Motherboard
GIGABYTE Z170M D3H
CPU
i5-6500
Graphics
RX 480
Mac
iMac
I found a few other posts with this issue and they they didn't get any resolution either.

I understand that "the destination disk cannot have the same name as any other mounted disk."

Does the macOS download in my applications folder count as a "mounted disk"?

If not then I don't understand the error I'm getting as there shouldn't be another disk with that name besides when Unibeast changes my flash drive name to "Install macOS High Sierra".
Go to top tool bar and right click the apple, drag down to force quit. Look for install HS. If you opened it or it opened after download and you only hit the red close tab it may still be open. You can also do this in Disk Utility by unmounting it. Yes an installer will appear as a disk or drive when it in an open status.
 
Joined
Jan 4, 2014
Messages
25
Go to top tool bar and right click the apple, drag down to force quit. Look for install HS. If you opened it or it opened after download and you only hit the red close tab it may still be open. You can also do this in Disk Utility by unmounting it. Yes an installer will appear as a disk or drive when it in an open status.
Thanks again for helping me through this.

I went through the process
Go to top tool bar and right click the apple, drag down to force quit. Look for install HS. If you opened it or it opened after download and you only hit the red close tab it may still be open. You can also do this in Disk Utility by unmounting it. Yes an installer will appear as a disk or drive when it in an open status.

Thank you again for helping me figure this out.

I ran through the process again this time checking if the install download was mounted and it wasn’t in disk utility or the Force Quit List.
 
Joined
Oct 12, 2016
Messages
3
Motherboard
Gigabyte B360M
CPU
i7-8700
Graphics
1080
Mac
MacBook Pro
Mobile Phone
iOS
I am getting the same issue using UniBeast 8.3.2, and macOS HS 10.13.6, Downloaded from MacBook Pro running HS.

The installer hangs on Installing Bootloader for hours, I opened the ~/Library/Logs/UniBeast.log file and the same message is appearing.

I navigated to /Volumes/

and here I can see:
Install macOS High Sierra
Install macOS High Sierra 1
Macintosh HD
InstallESD

When I erased the USB again and I navigated to /Volumes/
Install macOS High Sierra
Macintosh HD
InstallESD

I don't know where is this other 'Install macOS High Sierra' coming from I can't see it in the disk utilities.
 
Joined
Jan 4, 2014
Messages
25
So I found a solution. I was using my MacBook to create the unibeast usb. I’m not sure why but after doing a clean install of High Sierra on my MacBook I was able to successfully create the usb. The only thing i can think of is that I had used Boot Camp on my laptop previously and maybe my boot drive/vital files were changed. I would suggest trying to use a different computer to create your unibeast usb.
 
Joined
Oct 12, 2016
Messages
3
Motherboard
Gigabyte B360M
CPU
i7-8700
Graphics
1080
Mac
MacBook Pro
Mobile Phone
iOS
So I found a solution. I was using my MacBook to create the unibeast usb. I’m not sure why but after doing a clean install of High Sierra on my MacBook I was able to successfully create the usb. The only thing i can think of is that I had used Boot Camp on my laptop previously and maybe my boot drive/vital files were changed. I would suggest trying to use a different computer to create your unibeast usb.
I fixed the issue by making sure that the 'Install macOS High Sierra' is not listed in when i run
diskutil list

I navigated to /Volumes/ and deleted the 'Install masOS High Sierra' folder
sudo rm -rf Install\ macOS\ High\ Sierra/

after this UniBeast installed successfully.
 
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