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I'm trying to dualboot Windows 10 and Ubuntu 20.04.

Here's what I did:

  1. Shrunk over a 100GB using the Disk Management utility in Windows.

  2. After booting Ubuntu from a USB, selected "something else" in the installation type.

  3. Formatted the free space to ext4 mounted on /. This is a logical partition created at the beginning.

After the installation finished, I did not see the GRUB menu and booted into Windows.

I've already done two restarts and still don't see the option on Ubuntu under the "boot" section in BIOS.

I'm booting using the default UEFI settings.

I haven't created a swap partition because my laptop has 32GB RAM and SSD storage.

Can someone please suggest how I can get around this? (I'm using a Thinkpad T480 if that helps)

Update 1:

Secure boot was already disabled in BIOS (no changes made to this before or after installation)

Saurabh
  • 141

1 Answers1

1

Here's how I solved the problem:

Turned-off hibernate: Admin cmd > powercfg -hibernate off

Disabe fast startup:

  • Control Panel > Power Options > (Uncheck) Turn on fast startup
  • Ensured no row under "On battery" and "Pluged in" is set to Hibernate

Installation type:

  • Partition: Primary

  • Location : Beginning of this space

  • Use as : Ext 4 journaling file system

  • Mount point: /

Thank you @karel , @Slep , and @oldfred

Saurabh
  • 141