Re: 'error: invalid signature' when booting Windows 10

[Pascal Hambourg]

Le 12/12/2018 à 06:43, David Collier a écrit :
> On Tue, Dec 11, 2018 at 11:34 AM Pascal Hambourg <address@hidden>
> wrote:
>
> > Le 11/12/2018 à 08:03, David Collier a écrit :
> > > grub_cpu         i386
> > > grub_platform  pc
> >
> > This means, as I suspected, that the active GRUB flavour is GRUB BIOS
> > booted in BIOS/legacy mode, not GRUB EFI. GRUB BIOS is unable to
> > chainload an EFI executable such as the EFI Windows boot manager
> > bootmgfw.efi. If you want to chainload it, you must boot in EFI mode
> > with a GRUB EFI instance, as you did previously when the chainloading
> > worked.
>
> I am pretty sure that I was able to boot the same linux kernel as now and
> windows on the HD, when using the grub instance which was on another SSD
> (which is now retired).
>
> I guess I can try putting it all back together again to collect values of
> environment variables in a working setup - will this help?

Sure, but it is not mandatory. Do not wait to put the old drive back to 
post the current disk layout. The report from bootinfoscript may be 
helpful too.