Dell DSS 2500 Owner's Manual page 33

Option Description
Boot Sequence Enables or disables the Boot Sequence Retry feature. If this option is set to Enabled and the system fails to boot,
Retry the system reattempts the boot sequence after 30 seconds. This option is set to Enabled by default.
Hard-Disk Failover Specifies the hard drive that is booted in the event of a hard drive failure. The devices are selected in the Hard-
Disk Drive Sequence on the Boot Option Setting menu. When this option is set to Disabled, only the first hard
drive in the list is attempted to boot. When this option is set to Enabled, all hard drives are attempted to boot in
the order selected in the Hard-Disk Drive Sequence. This option is not enabled for UEFI Boot Mode.
Related links
Boot Settings
Viewing Boot Settings
Choosing the system boot mode
Changing the boot order
Choosing the system boot mode
System Setup enables you to specify one of the following boot modes for installing your operating system:
• BIOS boot mode (the default) is the standard BIOS-level boot interface.
• Unified Extensible Firmware Interface (UEFI) (the default) boot mode is an enhanced 64-bit boot interface. If you have configured your
system to boot to UEFI mode, it replaces the system BIOS.
1 From the System Setup Main Menu, click Boot Settings, and select Boot Mode.
2 Select the boot mode you want the system to boot into.
CAUTION: Switching the boot mode may prevent the system from booting if the operating system is not installed in the
same boot mode.
3 After the system boots in the specified boot mode, proceed to install your operating system from that mode.
NOTE:
• Operating systems must be UEFI-compatible to be installed from the UEFI boot mode. DOS and 32-bit operating systems do not
support UEFI and can only be installed from the BIOS boot mode.
• For the latest information about supported operating systems, go to Dell.com/ossupport.
Related links
Boot Settings
Boot Settings details
Viewing Boot Settings
Changing the boot order
About this task
You may have to change the boot order if you want to boot from a USB key or an optical drive. The following instructions may vary if you
have selected BIOS for Boot Mode.
Steps
1 On the System Setup Main Menu screen, click System BIOS > Boot Settings.
2 Click Boot Option Settings > Boot Sequence.
3 Use the arrow keys to select a boot device, and use the plus (+) and minus (-) sign keys to move the device down or up in the order.
4 Click Exit, and then click Yes to save the settings on exit.
NOTE: Setting this field to UEFI disables the BIOS Boot Settings menu. Setting this field to BIOS
disables the UEFI Boot Settings menu.
Pre-operating system management applications 33