Big Sur installer bootable usb


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Hi there. I tried creating a bootable big sur installer but i keep getting an error at the end. Not sure if the installer is causing the issue. I downloaded Big Sur at apple store. As you know there were issues issues onnthe upgrade/update since the Big Sur rollout 2 days ago. I am using a mac pro 2017 model with latest catalina update. Please refer to attached ss. Look forward for some help

terminal below:


Last login: Sun Nov 15 06:30:27 on console

[email protected] ~ % sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Install\ macOS\ Big\ Sur

Password:

Ready to start.

To continue we need to erase the volume at /Volumes/Install macOS Big Sur.

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

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

Copying to disk: 0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%

Making disk bootable...

2020-11-15 08:16:48.022 createinstallmedia[1376:26128] There was an error parsing the Info.plist for the bundle at URL <0x7fb419426f40>: NSCocoaErrorDomain - 3840

Couldn't mount dmg /Volumes/Install macOS Big Sur/Install macOS Big Sur.app/Contents/SharedSupport/SharedSupport.dmg (error code 110)Couldn't find InstallInfo.plist

The bless of the installer disk failed.

[email protected] ~ %
 
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Joined
Nov 15, 2020
Messages
2
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Hello and welcome.

Your command in Terminal may be off slightly...try this article from Macworld: How to create a bootable macOS Big Sur installer drive

C
I tried that too but same error. Kindly refer to terminal prompt below ....


Last login: Sun Nov 15 12:50:59 on console

[email protected] ~ % sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled -- /Applications/Install\ macOS\ Big\ Sur.app

Password:

Ready to start.

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

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

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

Copying to disk: 0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%

Making disk bootable...

2020-11-15 13:45:16.800 createinstallmedia[659:8060] There was an error parsing the Info.plist for the bundle at URL <0x7fcf9443da70>: NSCocoaErrorDomain - 3840

Couldn't mount dmg /Volumes/Install macOS Big Sur/Install macOS Big Sur.app/Contents/SharedSupport/SharedSupport.dmg (error code 110)Couldn't find InstallInfo.plist

The bless of the installer disk failed.

[email protected] ~ %
 

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