Dell Brocade Adapters - Manual (Page 198)

170 Brocade Adapters Installation and Reference Manual
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Updating Windows driver on adapter used for boot over SAN
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Updating Windows driver on adapter used for boot over SAN
When updating the driver on Windows 2008 systems where the adapter is used for booting over
SAN, install the new adapter driver without removing the existing driver. This is the recommended
procedure to update drivers. If you remove the adapter driver (which requires a system reboot
because the adapter was modified) then reinstall the driver, installation will fail because the
operating system cannot update the driver while a system reboot is pending. However, if you reboot
the system after removing the driver, the operating system will not come up because the driver
accessing the operating system was removed.