Create Big Sur OC (full) USB-Installer on Windows

[malkus 0]

Registered over a year ago but this my first post!  So, still here in the "lounge"..

 

Since the 14th of december there is a full Big Sur download option via gibMacOS but still no recovery version though.

I downloaded it anyway and now I wonder if I can use that content somehow to create a bootable USB.

 

 

I already have a formatted stick with a boot partition with OC and the EFI-folder as well as large 2nd HFS+ - partition sitting there, waiting...

 

Any ideas?

 

The content of the folder from gibMacOS (001-86606 - 11.1 macOS Big Sur) is (with relevant (?) sub-content listed):

 

• BuildManifest.plist
• Info.plist
• InstallAssistant.pkg
  • Bom
  • PackageInfo
  • Payload
  • Scripts
  • SharedSupport.dmg (12.2 GB)
    • 0.MBR
    • 1.Primary GPT Header
    • 2.Primary GPT Table
    • 3.free
    • 4.C12A7328-F81F-11D2-BA4B-00A0C93EC93B
    • 5.hfs (11.7 GB)
      • Shared Support
        • com_apple_MobileAsset_MacSoftwareUpdate
        • SFR
        • InstallInfo.plist
        • UpdateBrain.zip
    • 6.free
    • 7.Backup GPT Table
    • 8.Backup GPT Header
• InstallInfo.plist
• MajorOSInfo.pkg
• UpdateBrain.zip

 

 

 

Edited December 29, 2020 by malkus
changed date from 12 to 14

[Shaneee 1,675]

Take a look at the macrecovery method here, https://dortania.github.io/OpenCore-Install-Guide/installer-guide/winblows-install.html

[malkus 0]

On 12/29/2020 at 4:23 PM, Shaneee said:

Take a look at the macrecovery method here, https://dortania.github.io/OpenCore-Install-Guide/installer-guide/winblows-install.html

Thanks for the tip but I actually did that first! That still requires an internet connection for completing the install by downloading the rest of the rquiered data. I was hoping to put together a full, working offline installer.