Solved

Windows 8.1 UEFI Question

Posted on 2015-02-20
7
163 Views
Last Modified: 2016-11-23
I have a new Dell desktop Inspiron3847, but I suppose this question is not unique to Dell.  I think it is a Windows 8.1 question.

I am using backup software. In case of a failure of my system I need to boot to a flash drive.  I thought I understood that Windows 8.1 will not boot to a flash drive automatically.  If I understand correctly, if I want to boot to a flash drive I need to turn off UEFI Secure boot.  If I understand correctly, Secure boot makes my machine less susceptible to invasion by outside entities, so, I suppose the best way is to have secure boot on all the time, except for those special times when I want to boot to a specific device, then, after the condition passes, turn secure boot back on again.  Is this correct?
0
Comment
Question by:WoodrowA
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 95

Accepted Solution

by:
John Hurst earned 250 total points
ID: 40622093
You might need to turn UEFI off, but I think Windows 8 knows what it is making and the drive is supposed to boot if the computer will not start. So the USB key made should be able to start the way the computer is (UEFI enabled) as Microsoft would have set the boot that way. I have not had need to try mine at this point.
0
 

Author Comment

by:WoodrowA
ID: 40622192
Thank you for responding.

I am using Paragon backup software and it has a tool that creates a boot disk (flash drive) in what I believe is a Win PE protocol.  I created this flash drive and then booted my machine with Secure boot enabled and sure enough, it sees the flash drive.  

Why is this?  When the drive was created was it created in such a way that Windows recognizes it automatically?  I have two other USB drives connected to my computer but when the (F12) boot screen appears with Secure boot on, it does not see them.
0
 
LVL 95

Expert Comment

by:John Hurst
ID: 40622254
I think a non-Windows 8 flash drive would need UEFI disabled to boot.

I think only a Windows 8 recovery flash drive will boot with UEFI enabled.  Otherwise Joe Public would not be able to recover.

What you are seeing is a function of Windows 8, not the Flash drive.
0
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

 
LVL 88

Assisted Solution

by:rindi
rindi earned 250 total points
ID: 40622257
WinPE is based on Windows and should use it's signature, and that should be included in the secure-boot signature database. So such media should boot with secureboot on. If it doesn't, then disable secureboot.

Also several other OS's like some Linux distro's have been added to secureboot. So whenever you can boot, leave it on, if it doesn't boot turn it off.

Generally though secureboot doesn't really add much security. The OS can still be attacked. It is more an M$ "feature" that they forced on UEFI BIOS, which makes it harder to install other OS's. Particularly on Windows RT devices which use ARM based CPU's, you can't even disable secure-boot, so there you can't Replace Windows RT with another OS like Linux.
0
 
LVL 47

Expert Comment

by:noxcho
ID: 40622285
Paragon signed its products by Microsoft and the WinPE based drive it creates is detected as MS boot device. Usually you do not need secure boot to be enabled if some boot device with malware is not used on this PC.
0
 

Author Closing Comment

by:WoodrowA
ID: 40623192
Thank you
0
 
LVL 95

Expert Comment

by:John Hurst
ID: 40623233
@WoodrowA - You are very welcome and I was happy to help.
0

Featured Post

Comparison of Amazon Drive, Google Drive, OneDrive

What is Best for Backup: Amazon Drive, Google Drive or MS OneDrive? In this free whitepaper we look at their performance, pricing, and platform availability to help you decide which cloud drive is right for your situation. Download and read the results of our testing for free!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Using the Hyper-V Manager requires administrator rights. This guide shows how to add shortcuts and Start Screen tiles for normal users to quickly connect to local virtual machines rather than using the recommended Remote Desktop connection.
AutoHotkey is an excellent, free, open source programming/scripting language for Windows. It started out as a keyboard/mouse macros product, but has expanded into a robust language. This article provides an introduction to it, with links to addition…
Windows 8 came with a dramatically different user interface known as Metro. Notably missing from that interface was a Start button and Start Menu. Microsoft responded to negative user feedback of the Metro interface, bringing back the Start button a…
The Task Scheduler is a powerful tool that is built into Windows. It allows you to schedule tasks (actions) on a recurring basis, such as hourly, daily, weekly, monthly, at log on, at startup, on idle, etc. This video Micro Tutorial is a brief intro…

696 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question