Appendix
43
Administration manual 4603.7988.02 ─ 03
Name
Value
Description
Restore Factory Keys
[Enter]
Restores the original keys of the manufacturer
Clear All Secure Boot
Keys
[Enter]
Deletes the current platform key and further variables
(KEK, db, dbx) and activates setup mode
Dell E5470
This Dell model is a special case: For the E5470, you must first disable Secure Boot
via the "Secure Boot Enable" menu item to allow R&S
Trusted
Disk to perform the sys-
tem takeover.
A firmware update from the manufacturer might resolve this behavior. For models that
do not show this deviation, you can skip step 3, step 4 and step 5.
1. To access the UEFI, press [F2] right after starting the workstation.
2. Navigate to "Secure Boot".
3. Select the submenu "Secure Boot Enable".
4. Select "Disabled".
Figure 7-3: Dell E5470 Secure Boot settings
5. To confirm, click "Yes".
6. Select the submenu "Expert Key Management".
7. Enable the checkbox "Enable Custom Mode"
8. Click "Delete All Keys".
Activating setup mode (UEFI/GPT)