Laptop: Dell G5 5590
Windows 10, Version 10.0.18363 Build 18363
Ubuntu Studio 20.04.1
Drive: M2.2280 NVMe 2TB
I have tried several approaches to dual booting, with the one where I was finally able to boot to the USB drive at "Dual boot Ubuntu 16.04 with preinstalled Windows 10 Dell G5 5587"
To recap my steps;
Download Ubuntu iso file from Ubuntu website.
Download Rufus from Rufus website.
Burn the ISO to a Pendrive
Insert a USB pendrive.
Select Partition Scheme MBR. *Keep the other settings to default. E.g.: FAT.
Select the ISO and burn it to the connected pendrive.
I had previously cloned my Windows 10 from a 512G NVMe to a 2TB NVMe, and left 1TB as free space
Disabled Fast Start
Disabled Secure Boot
Set Boot Mode to Audit
Enabled AHCI for dual boot ad described in the link above
Turned off PTT
After the OS burn, inserted the pendrive and restart the machine.
Selected USB/Removable media.
Selected install Ubuntu.
Selected Language and other options.
When it comes to partition option, select something else.
In the 1 TB of unallocated space:
Per the Dell Dual Boot advice, then added a Root partition /
Gave 30 GB Logical space to swap memory in another /swap partion
The rest went to the /home partition.
The sticking point came with "Device for boot loader installation". The first link said to assign it to "Windows Boot Manager", and obviously there was no such device listed. In other links I read, it said to select the Windows 10 partition with the Windows Boot Manager, which is on the system partition labeled ESP.
On my drive, that partition is /dev/nvme0n1p1 (fat32), so I selected that device. I did not add a Boot Option file.
Upon hitting "Install Now", a warning came up saying "The partition table format in use on your disks normally requires you to create a separate partition for boot loader code This partition should be marked for use as a "Reserved Bios Boot Area" and should be at least 1 MB in size."
I exited the install, and it dropped me back into Ubuntu Studio, with all of the drives I had partitioned showing up on the desktop.
I exited Ubuntu Studio, and restarted. Windows 10 came up like normal.
Q. What should I do now;
1. Repeat the process, except use /dev/nvme0n1 for "Device for boot loader installation"?
2. or something else?
I made another install USB with Rufus, this time going with GPT and UEFI (non CSM). I tried to boot to that install, though the screen simply remained blank. So I hard restarted and tried again. Same issue. So I rebooted, though this time when I let it default to Windows, a fault screen showed up, requiring a repair via Windows Recovery Drive. I did so, then rebooted to windows with no issue.
Next I tried another install with MBR and UEFI/BIOS and was able to boot into Ubuntu install. When it came time to select the drive partitions, it showed that a previous install of mine populated the /, /swap, and /home partitions. So I have an install waiting for me to put the grub in the right place. So I exited, rebooted to the UEFI menu, and added boot options to EFI/BOOT64_efi and grubx64.efi, with Windows Boot Manager as the last option.
Rebooting then simply brought up Windows. Am I close?