I contacted the A&H help desk and the issue was found to be with the DHCP settings. The boot time went from 2 minutes and 43 seconds to 43 seconds. A&H help desk instructions :
There are a few reasons why a GLD may take a long time to boot but the most common reason by far is an incorrect DHCP/NETWORK setting on the mixer.
Please could you ensure the GLD network settings are identical to those shown below and then report if the boot up time decreases:
DHCP: Disabled
IP Address: 192.168.1.50
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.254