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How to boot Ubuntu with legacy BIOS and GPT, without to need Grub, LiLo or UEFI in extra partition or on ubuntu partition?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 1626 / 2 Years ago, wed, february 23, 2022, 7:43:50

How to configure to boot Ubuntu with legacy BIOS and GPT, without to need to install Grub, LILO, UEFI or other additional bootmanager in extra partition or on ubuntu partition? Or does the GPT no more able to point to a boot partition like MBR?

No other additional OS like p.e. a 2nd Linux or a windows are installed.

The follow configuration don't work:

PC CMOS configuration set to legacy BIOS, not to UEFI

Use MBR not GPT on hard disk

Ubuntu partition set by GParted to "legacy_boot"

The follow, not question fitting configuration, works fine (without to need LiLo, Grub2 or UEFI) :

PC CMOS configuration set to legacy BIOS, not to UEFI

Use MBR not GPT on hard disk

Ubuntu partition set by GParted to "boot"

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imberst

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answered 2 Years ago tresein · Accepted Answer

You can install, not all, a some sorts of bootloaders on MBR also (only one at the same time ...). Don`t need a additional partition in all cases?

For Ubuntu see the follow:

Set the bootable flag for your ubuntu partition, p.e. by GPartetd



sudo grub-install --boot-directory=/boot /dev/sda



sudo update-grub

Source:

https://www.xmodulo.com/install-grub-bootloader-master-boot-record-ubuntu-mint.html

Backup of source:

https://web.archive.org/web/20221006094835/https://www.xmodulo.com/install-grub-bootloader-master-boot-record-ubuntu-mint.html

For additional information check the follow:

Source:
Where is the boot loader installed?

Backup of source:

https://web.archive.org/web/20221006095700/https://askubuntu.com/questions/142912/where-is-the-boot-loader-installed

The follow list show you possible locations of installation of a lot of different bootloaders.

"The column MBR (Master Boot Record) refers to whether or not the boot loader can be stored in the first sector of a mass storage device. The column VBR (Volume Boot Record) refers to the ability of the boot loader to be stored in the first sector of any partition on a mass storage device."

Source:

https://en.wikipedia.org/wiki/Comparison_of_bootloaders#Storage_medium_support

Backup of source:

https://web.archive.org/web/20221006103618/https://en.wikipedia.org/wiki/Comparison_of_bootloaders