Slow Win7 boot

[mcb30]

(2016-01-28 21:50)mshoemaker Wrote:  Looking at the wireshark log, traffic is flowing for 20 seconds, then stops. The next message is at 43 seconds from the server to the client NOP IN, followed by 4 retransmits. Then at 49, 50, 51, 122, 123, 124, 125 seconds there are ARP requests asking about the clients IP address, then at 125.5 there is an iSCSI login command, then the next 20 seconds are a flurry of message traffic.

I just wondered what I should look for as to a cause of this 105 second delay with no traffic?

It sounds as though the iPXE portion has completed after 20 seconds, then the Windows kernel starts up, and finally the Windows iSCSI initiator starts up at 125.5 seconds. You can verify this by looking at the "initiator task tag" (ITT) in the iSCSI requests: any requests from iPXE will have the first two bytes of the ITT set to 0x18ae.

If this is the case, then it's a Windows problem rather than an iPXE problem. You could try enabling Windows kernel debugging and attaching windbg to find out what the Windows kernel is doing during this time.

Michael