[lubuntu-devel] ubiquity failed to install grub in Lubuntu Yakkety i386 daily [false alarm]

Nio Wiklund nio.wiklund at gmail.com
Sun Sep 18 17:01:24 UTC 2016

Den 2016-09-18 kl. 18:41, skrev Ian Bruntlett:
> Hi Nio,
> On 18 September 2016 at 09:57, Nio Wiklund <nio.wiklund at gmail.com
> <mailto:nio.wiklund at gmail.com>> wrote:
>     I think this is a false alarm. When I tried again with the previous
>     iso file, that worked yesterday, if failed too. So I used mkusb and
>     wiped the first megabyte and created a fresh gpt system with a
>     bios_grub partition and an EFI partition.
> My main experience with partitioning hard drives is with the old
> fashioned MBR based stuff where you wipe everything using dban and
> create a swap partition (size=RAM size * 2) and a main root partition
> when running the lubuntu install.
> Is there something I should be doing differently for EFI based systems?
> Is there a reference website I should be looking at?
> Also, I have been maintaining a LO Writer file,
> "Lubuntu-additional-things-to-test-for", that I will be using for the up
> and coming release.
> BW,
> Ian
> --
> -- ACCU - Professionalism in programming - http://www.accu.org
> -- My writing - https://sites.google.com/site/ianbruntlett/
> -- Free Software page -
> https://sites.google.com/site/ianbruntlett/home/free-software

Hi Ian,

In BIOS mode, with a GUID partition table, GPT, you need create a very 
small partition for the 'grub extras', that reside in the 1 MB space 
before the first partition in an MSDOS partition table. Make it 1 or 2 
MB in size, no file system and add the 'bios_grub' flag.

That was what I used in the test.

In UEFI mode, Windows 'needs' GPT. Ubuntu does not need it, but must 
comply, if the user wants a convenient dual boot system with 
pre-installed Windows systems in UEFI mode.

Booting in UEFI mode needs an EFI partition, a small partition with a 
FAT32 file system and the 'boot' flag. Make it 200-300 MB in size.

See these links and links from them:





Both Windows and Ubuntu can create the necessary partition structure 
automatically, if you let them do it.

Best regards

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