Sleepsmoky wrote:
Hello, I have the same problem I tried to reinstall several times even after following your instructions but unfortunately this is not working, every time the installation starts at 511 and stops just after a few minutes.
https://discussions.apple.com/content/attachment/6755b8ab-f176-4297-81a1-442f527aff84
Few Minutes Later
https://discussions.apple.com/content/attachment/99eb2df0-5ecd-436e-8544-6e411804c485
You can quit / cancel the download.
Try booting into safe boot mode and try again from:
https://itunes.apple.com/us/app/macos-catalina/id1466841314?mt=12&l=en-us
a SafeBoot https://support.apple.com/en-us/HT201262
Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and try again
In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.