C220M - SNS-3595-K9 invalid signature detected

[AminRamadan]

Hi,

Our old ISE C220M - SNS-3595-K9 is migreted to new one and I am trying to use it for labb by installning ESXI on the old ISE. But everytime i am trying to boot by usb, I got a messege "invalid signature detected - check secure policy boot in Setting".  When I go to CIMC/Compute/Bios/Configure boot order, I see the UEFI secure boot is not activated.

My question:

can I install Esxi on ISE C220M - SNS-3595 ? if yes, how can I de-activate the signature detected ?

Thank you

[Kirk J · Accepted solution]

That appears to be 'CIMC secure boot' enabled and locked to ISE/SNS appliance images.

If the system easily let you boot to an alternate image, that would present a big security vulnerability.

Repurposing the security appliances is not supported.

Kirk...