The error message is states what the issue is. The BIOS is set to the boot mode of legacy/BIOS. Whatever operating system you are trying to boot from is configured to boot from UEFI mode. There is an option in the system setup/BIOS called "Boot Mode" or something similar to that. The manual on the system support page may have additional information about BIOS settings.
Daniel My
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June 14th, 2019 15:00
Hello
The error message is states what the issue is. The BIOS is set to the boot mode of legacy/BIOS. Whatever operating system you are trying to boot from is configured to boot from UEFI mode. There is an option in the system setup/BIOS called "Boot Mode" or something similar to that. The manual on the system support page may have additional information about BIOS settings.
http://www.dell.com/support/
Thanks