Have you browsed through the BIOS Setup settings? Do you see anything about Secure Boot in there, even something that might be grayed out? If you find it and it's grayed out, look for an option called Legacy Option ROMs. That needs to be disabled in order to enable Secure Boot. Alternatively, try pressing F12 during startup to access the one-time boot menu. At least on newer systems, there's an option in there called Boot Settings, and one of them will be "UEFI on, Secure Boot on" as a shortcut to jumping around in your BIOS. Do you have that?
If none of that avails, I'm not actually sure that the E6520 supports Secure Boot. There was a small window of time during which Dell sold systems that supported UEFI but not Secure Boot.
UPDATE: I just updated the BIOS to Version A21, the BIOS Mode is still UEFI and the Secure Boot State is still Unsupported. The BitLocker is turned on and the drive is encrypted; the TPM Module is V1.2 and is enabled and reporting as Ready for use. The only thing holding me back on this device is not being able to turn Secure Boot on.
ejn63: Yes, as I said I had UEFI on, and was able to affect an UEFI hosted PXE boot to install Windows 10 Enterprise X64 V1709 onto the device. There is no way to "turn legacy off" on the E6520, nor is there a "Secure Boot" menu on it either. This BIOS is missing those two items which are found in E6530's and above. Another thing it is missing, it allows you to turn on VTI, but does not allow for "trusted execution". So there are several things that are not there for me to turn on or turn off--but the biggest one, the show stopper, is the lack of Secure Boot being available.
I'm afraid that the E6520 is one of those Secureless Booting UEFI machines. I was hoping someone had a way of confirming that; or better yet, a way around that, but this doesn't seem to be the case. :( Now I get to to disappoint a lot of people.
jphughan
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November 1st, 2018 15:00
Have you browsed through the BIOS Setup settings? Do you see anything about Secure Boot in there, even something that might be grayed out? If you find it and it's grayed out, look for an option called Legacy Option ROMs. That needs to be disabled in order to enable Secure Boot. Alternatively, try pressing F12 during startup to access the one-time boot menu. At least on newer systems, there's an option in there called Boot Settings, and one of them will be "UEFI on, Secure Boot on" as a shortcut to jumping around in your BIOS. Do you have that?
If none of that avails, I'm not actually sure that the E6520 supports Secure Boot. There was a small window of time during which Dell sold systems that supported UEFI but not Secure Boot.
ejn63
10 Elder
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30.6K Posts
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November 1st, 2018 07:00
Are you running 64-bit Windows 10 (which does support secure boot) or 32-bit Windows 10 (which does not)?
Adopted Romulan
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November 1st, 2018 07:00
I apologize, yes we are running Windows 10 Enterprise X64 V1709.
Adopted Romulan
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November 1st, 2018 07:00
UPDATE: I just updated the BIOS to Version A21, the BIOS Mode is still UEFI and the Secure Boot State is still Unsupported. The BitLocker is turned on and the drive is encrypted; the TPM Module is V1.2 and is enabled and reporting as Ready for use. The only thing holding me back on this device is not being able to turn Secure Boot on.
ejn63
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November 1st, 2018 09:00
Was the OS installed on the system when in secure boot mode (and with legacy boot OFF)?
Adopted Romulan
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November 1st, 2018 23:00
ejn63: Yes, as I said I had UEFI on, and was able to affect an UEFI hosted PXE boot to install Windows 10 Enterprise X64 V1709 onto the device. There is no way to "turn legacy off" on the E6520, nor is there a "Secure Boot" menu on it either. This BIOS is missing those two items which are found in E6530's and above. Another thing it is missing, it allows you to turn on VTI, but does not allow for "trusted execution". So there are several things that are not there for me to turn on or turn off--but the biggest one, the show stopper, is the lack of Secure Boot being available.
Adopted Romulan
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November 1st, 2018 23:00
I'm afraid that the E6520 is one of those Secureless Booting UEFI machines. I was hoping someone had a way of confirming that; or better yet, a way around that, but this doesn't seem to be the case. :( Now I get to to disappoint a lot of people.
ejn63
10 Elder
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30.6K Posts
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November 2nd, 2018 04:00
That leaves jphugan's explanation - this is a very early UEFI system. It likely does not fully support Secure Boot.