Create macOS install usb using Linux
If you don’t have a spare Mac or your Mac is too old to download macOS from the Apple App Store then use the method below.
Create account on hackintosh.download
The download required macOS from https://www.hackintosh.download/category/3-macos/
Insert a usb (16GB+ recommended) into Linux PC usb port and run Terminal
Use fdisk to determine your usb dev name letter, e.g. /dev/sdc. double check the target device letter to avoid overwriting the wrong drive.
sudo fdisk -l
Use dm2img to copy macOS (OS X El Capitan in this example) to your usb device (sdc in this example). This completely overwrites whatever is on the usb drive already!
sudo apt install dmg2img # install dmg2img if not installed sudo dmg2img -v -i ./EL_Capitan.dmg -o /dev/sdc Output from dmg2img... dmg2img v1.6.7 (c) vu1tur (to@vu1tur.eu.org) ./EL_Capitan.dmg --> /dev/sdc reading property list, 361779 bytes from address 6237611619 ... partition 0: begin=192, size=430, decoded=284 partition 1: begin=908, size=430, decoded=284 partition 2: begin=1611, size=356137, decoded=239844 decompressing: opening partition 0 ... [2] 100.00% ok opening partition 1 ... [2] 100.00% ok opening partition 2 ... [5991] 100.00% ok
When complete eject the usb.
Insert usb in your Mac and when power-up holding down the Alt | Option key until the Install usb icon is displayed in the middle of the screen.
Select the install usb to install macOS
Once in Recovery mode select Disk Utility to erase disk (if new drive or clean install)
Exit Disk Utility
Select mac OS to install from main menu and install to your main HDD or SSD
Note: the download source above is not Apple approved. To be safe, once your Mac is up and running, download the mac OS again from the Apple Store and re-create the install usb and carry out a clean install again.
Alternative MacOS (English) Source
user:~$ cd Downloads/ mkdir macosdownload git clone https://github.com/kholia/OSX-KVM.git macOS-Big-Sur Cloning into 'macOS-Big-Sur'... remote: Enumerating objects: 5, done. remote: Counting objects: 100% (5/5), done. remote: Compressing objects: 100% (5/5), done. remote: Total 991 (delta 0), reused 1 (delta 0), pack-reused 986 Receiving objects: 100% (991/991), 223.56 MiB | 1.29 MiB/s, done. Resolving deltas: 100% (501/501), done. Checking out files: 100% (94/94), done. user:~$ ~/Downloads/macosdownload$ cd macOS-Big-Sur/ user:~/Downloads/macosdownload/macOS-Big-Sur$ ./fetch-macOS.py [+] Fetching https://swscan.apple.com/content/catalogs/others/index-11-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog [+] Fetching http://swcdn.apple.com/content/downloads/41/23/061-26578-A_FF0C6M87LS/ylvl0phx6uy3i444qt9p57n8wz0xnylmd9/InstallAssistantAuto.smd [+] Fetching https://swdist.apple.com/content/downloads/41/23/061-26578-A_FF0C6M87LS/ylvl0phx6uy3i444qt9p57n8wz0xnylmd9/061-26578.English.dist . . . # ProductID Version Post Date Title 1 061-26578 10.14.5 2019-10-14 macOS Mojave 2 061-26589 10.14.6 2019-10-14 macOS Mojave 3 041-91758 10.13.6 2019-10-19 macOS High Sierra 4 041-88800 10.14.4 2019-10-23 macOS Mojave 5 041-90855 10.13.5 2019-10-23 Install macOS High Sierra Beta 6 061-86291 10.15.3 2020-03-23 macOS Catalina 7 001-04366 10.15.4 2020-05-04 macOS Catalina 8 001-15219 10.15.5 2020-06-15 macOS Catalina 9 001-36735 10.15.6 2020-08-06 macOS Catalina 10 001-36801 10.15.6 2020-08-12 macOS Catalina 11 001-51042 10.15.7 2020-09-24 macOS Catalina 12 001-57224 10.15.7 2020-10-27 macOS Catalina 13 001-68446 10.15.7 2020-11-11 macOS Catalina 14 001-79699 11.0.1 2020-11-12 macOS Big Sur Choose a product to download (1-14):
This will download a .pkg file from which you can extract the .app require to create a bootable usb
- Right-click on the .pkg file > select “Show Package Contents”
- Open the Contents/SharedSupport folder and locate the file named InstallESD.dmg
For further information see:
how-to-install-macos-big-sur-with-opencore-on-linux
Note: to get install version of app file open dmg file to copy app file to Applications folder