I finally managed to figure out the issue: the usage of UNetbootin for creating Live USB.
So, do not use
UNetbootin for creating a Live USB with UEFI-enabled installation. Instead, the correct way to create a Live USB is to use the Startup Disk Creator from some working Ubuntu systems.
1) Creating Live USB (Reference guide)
- First, format the USB with (FAT-32) filesystem using GParted. (No need to set the
boot,esp flag in USB)
- Then launch Startup Disk Creator and select the ISO image and target device which is the USB that we want it to make bootable. (Most of the times, Ubuntu does this automatically if ISO image is present & USB is mounted properly)
- It will take 2-4 mins for the process to be completed. Then you'll get the message that this USB can be used for installation. Success!
2) Changing Settings in APTIO utility
Simply power on the system and immediately press
F2 which will throw the APTIO utility screen.
UEFI-enabled installation work without issues, we have to disable the following:
- Secure boot
- Fast boot
- Intel RST (i.e. do not use a RAID volume, either RAID0 or RAID1)
(I have read in forums that these can be turned on after OS installation but I haven't tried this option.)
And enable the AHCI mode instead. Finally, change the order of boot option so that our Live USB appears as first in the order.
3) Creating Manual Partitions in SSD
The next step is to partition the (NVMe) SSD and other SSDs or Magnetic Disks (HDDs) as we wish. Since we already have a Live USB, we can use that to
Try Ubuntu without Installing and access the disks to create partitions.
Once we're in, use GParted to create manual partitions. Note that I deleted the
Microsoft Reserved Partition that came along as default when I purchased the system. I figured out deleting this partition is not an issue but it is mandatory to have an
EFI System Partition (ESP) as the first partition in SSD. So, we have to create one.
First make sure the SSD where Ubuntu is to be installed is in Global Partition Table (
GPT) format. Then:
- Delete all existing partitions; thus the whole disk space will be
- Create first partition of
550 MiB or more which is the recommended space for Ubuntu based installations. This partition must be in
FAT32 file system format as per UEFI spec. Additionally, the flags must be set to
boot,esp. I used
manage flags option to do this. Also the
label has to be
partition name field can be left blank.
- The next partition has to be
swap space for efficiency reasons. You can have this partition at the end as well but I made it as second partition. I allocated around 8.5GB with no
partition name and no
label but the filesystem type has to be
third partition would be where the Ubuntu installation will live. i.e. the
/ root file system. I allocated rest of the space (around 450GB). To create this partition, use
ext4 journaling filesystem with
label as per your wish; Again, the
partition name field can be left blank.
Use other SSD (e.g. 850 EVO) to create a partition for
- I deleted all existing partitions in this disk and created a single partition (without any
ext4 filesystem with a friendly
label and provide the mount point as
/home. This is where all the documents, pictures, audio, video etc., will live.
label that we give during partitioning will be used to load disks later on. partition name can be left blank.
Partitioning work is done. So, reboot the system and now select the option
4) Installing Ubuntu
It is recommended to connect to an Ethernet cable during Ubuntu installation because it downloads some files from the internet which are important for successful installation.
First few steps are self-explanatory from the wizard menu. But, choose the option
Something Else when asked where to install. Now, we have to do some more work here since we have created our own partitions.
boot, esp flags are checked in the ESP partition. After this the mount point will change to
/efi (or sometimes
make sure that the swap space partition is of the filesystem
- in the partition where Ubuntu is to be installed, make sure that the mount point is
format option checked and filesystem is of type
- in the partition earmarked for
/home, set the mount point to
ext4 journaling filesystem; additionally with some friendly label to access the disk later on.
- the external disk (like magnetic HDDs) can be left as is without any modifications.
device for bootloader installation has to be the ESP partition. But sometimes this can be detected automatically. So, no worries.
We're almost done with all the procedures. Just click continue.. It will ask for more details like your location, name, computer name, username, password. Enter these details and patiently wait for 3-4 minutes to let the installation finish..
In the meantime, watch the progress to make sure that everything is going on smoothly and without any errors. Hopefully, it will be successful and throw a message to restart the system to use the new installation.
Reboot it and login with your username and password.
This installation by default uses
nouveau drivers. If you're having a modern video card such as nVidia GTX 1070 or so, we've to install it. Go to
Softwares & Updates ->
Additional drivers and install the proprietary Nvidia drivers (as of this writing the latest version is 384.111)
Once successfully installed and rebooted again, you can verify whether the video card is Nvidia or not by checking in:
All Settings ->
Hope this would be a helpful guide for anyone struggling to have a correct and working installation of Ubuntu Gnome with UEFI-enabled.
P.S. Note that this guide assumes that no important data is available in all disks. Backup all your files before trying this way of installation.
References which have been quite helpful:
1) How does UEFI boot actually work?
2) more background on UEFI