All Questions
253
questions
50
votes
2
answers
510k
views
What is CSM option
What is the CSM option in BIOS? If I can't boot into Windows any more, is it because CSM is disabled?
Would an ASUS K55 come with this option diabled?
- 509
30
votes
4
answers
283k
views
What exactly is "UEFI with CSM" boot mode?
Under this question, I was told that "UEFI with CSM" is essentially BIOS mode. It made me quite confused because what I've learnt over the years is far from that.
As per my observation, I think CSM ...
- 11.3k
26
votes
1
answer
131k
views
Should I install an OS using UEFI or BIOS (legacy/CSM) boot mode? [duplicate]
I'm installing a new operating system on my computer. Should I install it for booting in UEFI or legacy (BIOS/CSM) mode? What are the advantages or disadvantages to using one or the other?
- 461
21
votes
7
answers
86k
views
How to tell if the Windows Installer boots in EFI or BIOS?
I have a Windows 7 x64 install USB and want to know if the installer has booted into EFI or BIOS mode.
I found a solution here, but it doesn't work since notepad couldn't find:
\Windows\Panther\...
- 363
20
votes
1
answer
4k
views
What hardware device used to eat up 1.4GB of my 4GB RAM, and now suddenly after no hardware changes eats up 2.2GB?
This is more or less a continuation of
What hardware device eats up 1.4GB of my 4GB RAM?
While I have more or less accepted the solution there that for some mysterious reason, after a BIOS upgrade ...
- 3,437
19
votes
1
answer
103k
views
How do I "Boot to UEFI shell"?
I am trying to follow some instructions to update some firmware:
x64 UEFI environment:
Boot to UEFI shell
Run update.nsh
I don't know how to do this. When I boot, do I have a choice to boot to UEFI ...
- 2,237
17
votes
7
answers
86k
views
How to move an existing installation of Window 7 64bit to UEFI (from legacy)
I have a laptop that has Windows 7 64 bit Enterprise edition. It is already filled with plenty of Software and drivers.
The laptop (Dell E6220) supports booting through UEFI, but the insatllition was ...
- 173
16
votes
5
answers
24k
views
Do hard drives need a GUID partition table (GPT) to boot in UEFI mode?
Is EFI booting something hardware specific? I have a desktop motherboard with a UEFI Bios, but I can only boot from USB drives in "UEFI" mode. Both the DVD drive and the HDD's (a RAID 0 array) boot ...
- 663
15
votes
2
answers
22k
views
Is a hybrid Linux USB-Stick for UEFI & legacy BIOS possible?
my idea is to create an USB-Boot-Stick with Lubuntu that is able to boot on an older BIOS Laptop and an newer UEFI Systems.
This would be quite easy, when the Stick would be setup as a legacy boot ...
- 1,905
14
votes
1
answer
73k
views
System found unauthorized changes on the firmware
I have a PC with an Asus motherboard running Windows 7 Pro.
Yesterday I installed latest Windows updates, restarted, and shortly afterwards hibernated the machine.
This morning on un-hibernating I ...
- 313
12
votes
3
answers
21k
views
My new Acer Aspire 7 doesn't have a Legacy Boot option, what can I do to get it?
I am greatly disappointed by this fact, as I need Legacy Boot in order to boot into Linux OS via an USB port. Well, I only have UEFI.
I've considered two options thus far:
I install Linux distros in ...
- 321
11
votes
2
answers
11k
views
How to make bootable Debian usb drive that works on both BIOS and UEFI systems?
I want to make bootable USB drive with Debian and make it bootable on both BIOS and UEFI systems. I've found only separate instructions for BIOS and UEFI systems. Please help me to find a solution.
- 61
10
votes
6
answers
109k
views
SATA Devices not showing up when in UEFI mode
I'm trying to install Windows and the bios should be set to UEFI mode. The problem is that all SATA devices aren't showing up (shows as if there aren't any) so I can't boot from the installation CD (...
- 151
9
votes
1
answer
39k
views
UEFI vs non-UEFI options in boot menu
I just built new PC based on Asus Z87-Plus motherboard and in BIOS boot menu I now have my removable devices listed twice - once as a device itself and once with "UEFI: " prefix.
It looks like this ...
- 709
8
votes
2
answers
80k
views
After Windows 10 upgrade I can no longer access BIOS
I posted a question recently regarding my Windows 10 upgrade which ended up with a black screen and cursor. QUESTION
I reverted back to Windows 8.1 using the "Revert to previous build" option in ...
- 251