Old iMac stuck in recovery, reinstall fails with server error

An old iMac stopped booting after a normal shutdown the previous evening. Turning it on only showed the screen instead of the normal desktop. did not fix the problem.

A macOS reinstall was attempted, but the install failed because it could not connect to the server. The iMac was still connected to Wi-Fi as usual. After the reinstall attempt, the existing system appears to be wiped, but the new was not installed.

Booking Apple service is also difficult because the iMac does not boot far enough to show the .

Key points

  • The iMac worked normally, then failed to boot the next day.
  • It only reached the screen.
  • did not solve the issue.
  • macOS reinstall failed with a server connection error, even though Wi-Fi was connected.
  • The is hard to retrieve because the machine does not boot far enough.
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