The time between when you power on the virtual machine and when it exits the BIOS and launches the guest operating system software can be short. You can edit boot delay options to change that amount of time or to force the virtual machine to enter the BIOS setup screen after power on.

Delaying the boot operation is useful for changing BIOS settings such as the boot order. For example, you can change the BIOS settings to force a virtual machine to boot from a CD-ROM.

vSphere Client logged in to a vCenter Server

Access to at least one virtual machine in the inventory

Privileges to edit boot options for the virtual machine


In the vSphere Client inventory, right-click the virtual machine and select Edit Settings.


Select the Options tab and under Advanced select Boot Options.


In the Power on Boot Delay panel, select the time in milliseconds to delay the boot operation.


(Optional) Select whether to force entry into the BIOS setup screen the next time the virtual machine boots.


(Optional) Select whether to try to reboot after a boot failure.

You can select the time to reboot in seconds.


Click OK to save your changes and close the dialog box.