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R710 system services reboot5/2/2023 ![]() To change these settings, first press F2 to enter into the BIOS during POST. Setting the slots to Boot Driver Disabled reduced the POST time and allowed the server to reboot significantly faster. On the systems where the boot times were taking over 15 minutes, none of the PCIe devices were used for booting the server, and were PCIe SSDs and NIC’s. What this does is disable the preboot services for the device when it is a non-bootable device, while allowing the device to remain available to the OS. I did some searching and found the Dell PowerEdge 12G Server Bios PDF which covers PCIe Slot Disablement, which allows the PCIe slots to be set to Boot Driver Disabled to prevent the Option ROM from running during the POST to allow for quicker boot times. I was recently working with a client that uses R720 servers for SQL Server and during restarts of the server, the POST (Power On Self Test) would stall for as long as 15 minutes before the Windows Server OS would actually begin starting. ![]()
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