Problem

Host failed to be imaged with the message Post install reboot ESXi task failed.

Cause

ESXi server has incorrect BIOS settings.

Procedure

  1. Check the ESXi server console.
  2. If the console displays a gray screen with the message Unable to find boot device, check that the BIOS setting is SATADOM for Quanta servers, and SD card or SATADOM for Dell servers.
  3. Fix the hardware problem.
  4. On the Imaging tab, click the host that displayed the red icon and click Retry.