UEFI or Legacy?

English Install/Boot/Login
#1

Hi :slight_smile:

I hope that I am not repeating a similar question.

Let’s assume that:

  1. I can disable secure boot.
  2. I accept the default “Suggested Partitioning” of the network installer.
  3. I choose the user Interface “Desktop with KDE Plasma” of the network installer.
  4. I accept the default “Installer Settings” of the network installer.

If I install openSUSE on the entire HDD, should I choose UEFI or Legacy?

Thanks in advance!

#2

As your system is bought, it is either UEFI or not. Stick to what it is.

#3

I am sorry, but I don’t understand…
My laptop is https://snlookup.com/acer-aspire-e5-575g-notebook-nx-gl9eb-003-p136304#ffs-tabbed-14 and Acer’s bios setup “InsydeH20” has two boot modes: UEFI with Secure boot Enabled and Legacy.
Which one is better suited for openSUSE?

#4

Both work as you might assume. Legacy because it is there for so many years and UEFI because it is around for a considerable time and thus used by many (without flooding the forums with problems).

#5

I made a mistake on the question.
The question is :
Which one is better suited for my laptop?

#6

Again, I assume both will work as both may be chosen from the BIOS.

I am still a bit confused by your question. Things like KDE, network, etc. have nothing to do with this.

#7

Since I didn’t know which information was useful, I included all of it :slight_smile:

#8

Biggest consideration is if you dual boot or not. All OS’s on a machine must boot using the same methods

#9

Hi
If it’s a newer system, I would guess the default is UEFI.

So, UEFI requires the disk to be of type gpt, for Legacy booting the disk type requires to be of type dos.

Both work with openSUSE, openSUSE works fine with secure boot on…

Are you going to dual/multi boot the system?

If your going to just run openSUSE or boot with Win(version?) then I would suggest UEFI.

Boot from a live system at check the disk format…


lsblk
fdisk -l /dev/sda
#10

… also note that on some of the new laptops, their firmware might not be without problems.

I have found on some that disabling UEFI in the BIOS and choosing Legacy did – well – nothing. The machine would still insist on booting EFI, so you literally really had on choice on those machines but to use UEFI.

Thanks to sloppy manufacturers, UEFI can be poorly implemented so it becomes a pain in the butt!

I would say, stick with UEFI, and make sure all operating systems you install are installed as UEFI. Some Acers are among the problem machines that refuse to respect their UEFI and Legacy BIOS switches.

#11

Just to be clear: in dual boot, it is possible to have one OS booting as UEFI and another booting as legacy (a.k.a. MBR). The problem is that you have to change the boot method in the UEFI BIOS, and one OS bootloader won’t see the other OS. This, as you may surmise, is “Not a Good Thing™”.

So you make sure you are installing under the same system (probably UEFI) by selecting the install media boot mode.

#12

I intend to just run openSUSE on my laptop, however when I boot the usb with Security Boot Enabled, it doesn’t show the graphical boot screen.
What should I do on Windows 10 to create a bootable usb that works with Security Boot Enabled?

#13

I decided that I will just run openSUSE on my laptop, however when I boot the usb with Security Boot Enabled, it doesn’t show the graphical boot screen.
What should I do on Windows 10 to create a bootable usb that works with Security Boot Enabled?

#14

I decided that I will just run openSUSE on my laptop, however when I boot the usb with Security Boot Enabled, it doesn’t show the graphical boot screen.
How can I create a bootable usb on Windows 10 that works with Security Boot Enabled?

#15

So, it boots.

The one you have does boot, as you inform us above. Why do you want another one, created on Windows 10?

#16

No it doesn’t, I wanted to say “when I selected the usb” :shame:
I select USB from boot menu and it shows “No Bootable Device”.

#17

Disable secure boot it is broken on some hardware. Be sure to tick the box secure boot in the installer and you can turn it on again after the install

#18

To be precise: You have an USB which you think should contain bootable installation ISO of Leap 42.3 and when you want to boot from it, the system says "“No Bootable Device”.

When that is correct, the what misses is how you created that bootable USB.

If I am correct, you have a openSUSE system running already since some time. Thus I assume you tried to write the USB on an openSUSE system. How?

#19

Sorry, I don’t understand what you mean…

#20

As I understand it, he is not even in the installer, he trying to boot it.