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Dell Update Packages Version 14.11.201 User's Guide

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DUP Update of Firmware Might Fail While Running in the UEFI Mode

When Red Hat Enterprise Linux 6 or SLES 11 is installed and booted in a UEFI environment, flashing firmware using DUP might fail after DUP reboots the system.

DUP relies on a warm reset to enable firmware flashing. In the UEFI mode, the kernel by default performs a cold reset.

Boot the system with the reboot=k kernel command line option to enable the firmware flashing procedure to complete successfully. You could add this to /etc/grub.conf to be persistent across reboots.

  • NOTE: Using the reboot=w option as documented in the Linux Kernel documentation might cause a Kernel Panic to occur on Red Hat Enterprise Linux 6 while the system shuts down.

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