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You are here: MacNN Forums > Software - Troubleshooting and Discussion > macOS > Burn dmg file to usb on catalina

Burn dmg file to usb on catalina
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novanljx
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Aug 10, 2020, 11:06 PM
 
My old MacBook Air was crashed and I want to reinstall os from it. I just downloaded .dmg file of High Serria. How can I make a bootable USB from it?
     
Spheric Harlot
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Aug 11, 2020, 10:18 AM
 
DiskMaker X for High Sierra will do exactly what you want:

https://diskmakerx.com/diskmaker-x-f...erra-is-ready/
     
Spheric Harlot
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Aug 11, 2020, 10:20 AM
 
You can try this, as well:

Apple Support: How to reinstall macOS from macOS Recovery
https://support.apple.com/en-us/HT204904
     
novanljx  (op)
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Aug 12, 2020, 10:22 PM
 
Got this error after launching Disk Maker X app for High Serria:

No installer application could be found.
     
Spheric Harlot
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Aug 13, 2020, 05:52 AM
 
Did you download the DMG from Apple directly? You may have to mount it to show the installer.
     
novanljx  (op)
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Aug 19, 2020, 10:22 PM
 
Originally Posted by Spheric Harlot View Post
Did you download the DMG from Apple directly? You may have to mount it to show the installer.
Thanks. got it.

p.s how much time it takes? It is running for two hours and still not completed.

[update] Managed to get it done with Spam Product, which shows a progress bar during file writing.
( Last edited by reader50; Aug 31, 2020 at 07:00 AM. Reason: fixed product link)
     
   
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