I have not been able to boot the Dell Latitude E5250 with a USB device.
The only time it will boot is from the first USB disk, when I build the second USB disk using the TAILS-Installer, RUFUS, Universal USB Installer or Etcher it fails to boot. The error message is
selected boot device failed press any key to continue
I have tried switching from UEFI to Legacy BIOS in the Dell BIOS setup
disable secure boot
nothing I have tried will allow it to boot.
The Latitude E5250 will boot using the first USB device when we would build the disk using the two USB drives method, but when using then trying to use the second built USB drive, built using the native installers, it returns the error message at boot up selected boot device failed press any key to continue.
However if I try using the exact same flash disk either the second build or the newest version of the TAILS build 3.13.1 with the .img image on a different DELL laptop, for example, an Dell Precision M6400, or any other device like a Microsoft Surface, it successfully boots up.
The only laptop that fails to boot from the bootable USB drive is this DELL Latitude E5250
If you have a procedure I need to follow to succeed booting this Dell Latitude E5250 to TAILS or you need additional information from me, Please contact me with this email address listed below,
Contact info
Chris Tolmie
ctop1@???
OS Name: Microsoft Windows 10 Pro
Version: 10.0.17763 Build 17763
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name E5250-06150GL
System Manufacturer Dell Inc.
System Model Latitude E5250
System Type x64-based PC
System SKU 062A
Processor Intel(R) Core(TM) i5-4310U CPU @ 2.00GHz, 2594 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date Dell Inc. A20, 10/23/2018
SMBIOS Version 2.8
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer Dell Inc.
BaseBoard Product 08T0PT
BaseBoard Version A00
Platform Role Mobile
Secure Boot State Off
PCR7 Configuration Binding Not Possible
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "10.0.17763.194"
User Name E5250-06150GL\topc
Time Zone Eastern Daylight Time
Installed Physical Memory (RAM) 12.0 GB
Total Physical Memory 11.9 GB