I am trying to install+dual boot Ubuntu 16.04(LTS) with pre installed Windows 10(home) in my Dell G5 5587. Windows is installed in SSD. I have 1TB HDD alongside the SSD.
I did the following:
- Freed 100 GB from SSD and created 100 GB unallocated space.
- Turned off Windows 10 Fast boot.
- Turned off Secure boot feature from BIOS.
- Changed Secure boot mode to audit mode in BIOS.
msinfo32
is showing:
BIOS Mode UEFI
Secure Boot State Off
The BIOS is showing UEFI on, Secure Boot off, PTT on.
Approach 1 (MBR+UEFI/Legacy)
I burned Ubuntu using Rufus(MBR+UEFI/Legacy) to a pendrive. I got the pendrive in the one time boot menu(F12). When I try to install Ubuntu it showed the following warning:
"This machine's firmware has started the installer in UEFI mode but it
looks like there may be existing operating systems already installed
using "BIOS compatibility mode". If you continue to install Debian in
UEFI mode, it might be difficult to reboot the machine into any
BIOS-mode operating systems later.If you wish to install in UEFI mode and don't care about keeping the
ability to boot one of the existing systems, you have the option to
force that here. If you wish to keep the option to boot an existing
operating system, you should choose NOT to force UEFI installation
here.")
As I do not want to risk losing Windows, I aborted installing Ubuntu.
Approach 2 (GPT+UEFI)
If I burn the Ubuntu OS using Rufus(GPT+UEFI), I do not find the pendrive in one time boot menu(F12).
Question
How to properly install dual boot Ubuntu 16.04 LTS with pre installed Windows 10 in Dell G5 5587?
Best Answer
Steps to install Ubuntu 18.04 alongside pre installed Windows 10 as dual boot in NVMe SSD.
Hardware Information:
Download Files
Burn the ISO to a Pendrive
MBR
.Create Unallocated Space for Ubuntu
Turn off Fast startup from Windows 10
Start
button.Search
.Control Panel
and hit Enter on your keyboard.Power Options
.Choose what the power buttons do
.Change settings that are currently unavailable
.Turn on fast startup (recommended)
.Save changes
.Turn off secure boot from BIOS
Boot Sequence
.Secure Boot
>Secure Boot Enable
, and set the checkbox toDisabled
.Secure Boot Mode
toaudit mode
.Enable AHCI for dual boot
Family & other users.
Add someone else to this PC.
I don't have this person's sign-in information.
Add a user without a Microsoft account.
Account type
of this newly created account toAdministrator
.bcdedit /set {current} safeboot minimal
SATA Operation mode
toAHCI
from eitherIDE
orRAID
.bcdedit /deletevalue {current} safeboot
Install Ubuntu
something else
./
partitionWindows Boot Manager
asDevice for boot loader installation
.Install Drivers (optional)
Reference: