"No operating system was found" occurred when VM boot randomly

Products

• VMware vSphere ESXi 7.0
• VMware vSphere ESXi 8.0

Issue/Introduction

-VM failed to enter OS and hanging in boot screen. 

-Retry to power on the same VM and result always succeed

-Below similar errors found in vmware.log:

Guest: Status upon boot failure: No Media
Guest: Status upon boot failure: No Media
...
[msg.Backdoor.OsNotFound] No operating system was found. If you have an operating system installation disc, you can insert the disc into the system's CD-ROM drive and restart the virtual machine.

Environment

VMware vSphere 7.0

VMware vSphere 8.0

Cause

still under investigation 

Resolution

Configure virtual machine options as bellow:
1.From the vSphere Client, right-click the master VM and go to Edit Settings.
2.Open VM Options tab, 
3.Configure as below under Boot Options section.
-Boot Delay: 3000 milliseconds
-Failed Boot Recovery: Checked
   If the VM fails to find boot device, automatically retry after: leave as default value (10 seconds)

or

Edit vmx of VM to add below lines:

bios.bootRetry.delay = "3000"
bios.bootRetry.enabled = "TRUE"

then refer below kb to reload the vmx:

https://knowledge.broadcom.com/external/article/343248/reloading-a-vmx-file-without-removing-th.html