Booting Ubuntu on Top of Windows (DualOS)

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Formatting Booted USB (Windows), if normal formatting not work

cmd -> type "diskpart"
list disk
select disk <number>
clean
create partition primary
format fs=ntfs quick // format fs=fat32 quick
//optional step
assign letter=h //any letter you want to
exit


Boot USB Flash drive

  • Check the windows BIOS mode, run>> msinfo32>> BIOS Mode
    • If target system is UEFI then partition scheme GPT
    • If target system is BIOS/ CSM/Lagacy then partition scheme MBR 👍🏼 selecting MBR is better
  • Download rufus to make USB stick bootable
    • if rufus don’t see the .iso file, copy the .iso to C: drive in a folder, e.g., iso

1.a) Advanced Way Dual Boot

  • Follow single/dual boot this tutorial until 6.43m -> select something else

1. b) Generic Way (~Making USB Bootable~)

Boot Key, Varies on Motherboard ~Booting (Ubuntu) on Windows OS~

  • Need to accessed the UEFI menu. Varies from motherboard to motherboard, but normally:
    • Enter for boot menu -> disable secure booting
    • on Fn before pressing F12
    • even the boot key could be del/esc
  • (for dual boot on single hard disk) Installation type -> something else -> select drive -> use as: Ext4 journaling file system -> Mount point: select ` ` -> Device for boot loader installation -> Windows Boot Manager

Screenshot 2022-10-26 102040

  • double click on the free space, select file systems Ext4 and mount point: \

Screenshot 2022-10-26 102159

  • most important: In dual boot mode, select the Device for boot loader installation: /dev/sda2 Windows Boot Manager Screenshot 2022-10-26 102343

  • If needed, follow this video if necessary

1.c) Best fit with old motherboard for this tutorial