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I have a dell r715 with a Broadcom NetXtreme II 1 Gigabit Server. I am booting my Windows Server 2008 R2 through iSCSI from a SAN.

I want to install my network drivers. When I try to install my machine reboots and then I need to restore windows.

I guess this is because during the installation the network adapters get disabled. Because the OS is on a network disk it fails to continue the installation process.

Do you have any inputs on how can I install the drivers differently ?

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How far through the install process does it get? If it can get to the WinPE stage, you can press SHIFT + F10 to bring up a command prompt where you can install drivers from a USB stick –  Chris McKeown Apr 25 '12 at 13:37
My windows is installed when I start the installation of the drivers. I use the installer from broadcom and I run the installer from a USB stick –  Dorin Apr 25 '12 at 13:40
Sorry, I didn't correctly read the part about you booting from iSCSI. Do you have multipathing? If so, can you extract the actual drivers from the package and manually update each adapter in turn to prevent cutting your storage off? –  Chris McKeown Apr 25 '12 at 13:48
I tried setting up multipathing but for some reason the machine restarts after I add a new path. I use an intel card as the secondary network card. I tried adding a secondary path to the san in the same subnet, in differnt subnet, on the same management port, on different managment ports and every time I add the second path the machine reboots. I have MD3200i and I used Round Robin and Failover as multipath mechanism. –  Dorin Apr 25 '12 at 13:54

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