Re: problems dual booting Ubuntu 16.04 and Windows 10

[Pascal Hambourg]

Le 08/05/2018 à 06:58, David Collier a écrit :
> I am having problems trying to make grub boot Windows 10. (I tried both
> version which came with 16.04 and the latest and greatest)

Version of what ?
What versions ?
The latest and greatest what ?

> what happens,
> it does not recognize any partitions of the hard drive where Windows 10 is
> installed.

How do you know ? What do you do and what happens exactly ?

Did you install Ubuntu and Windows in the same boot mode (EFI or BIOS) ?

> I can boot Windows by changing the BIOS default boot flow, the UEFI BIOS is
> able to do it just fine, but grub just does not refuse to detect Windows
> boot partition, or any partition on that drive to that matter. I used the

"does not refuse" = "accepts" ?

> 'disks' utility to change format of the Windows boot partition from FAT to
> NTFS, converting it to NTFS makes the BIOS stop recognizing it, but still
> does not help grub to recognize it.
Do you mean the EFI partition ? The BIOS does not care about Windows 
boot partition.

Please post the output of the following commands :

dpkg -l "grub*"
fdisk -l
blkid
os-prober
efibootmgr -v

Don't worry if the last one gives an error.