On Wed, Jan 9, 2019 at 8:57 AM Hans de Goede <hdego...@redhat.com> wrote:
> Hi, > > On 09-01-19 15:11, Richard Shaw wrote: > > Following up on Windows 10 not being detected I have a strange (to me) > issue... > > > > Windows 10 created an EFI partition > > > > Fedora did a EFI install but DID NOT install the EFI data to the EFI > partition that Windows created and DID NOT create one of its own. The > Fedora EFI files are installed to the plain /boot partition. > > > > Now I will say this is a somewhat older computer and has pretty early > EFI support (EFI Ready). There's no configurable EFI options in the BIOS > other than for CD/DVD booting. > > > > Thoughts? > > I believe this means that Fedora did not recognize your machine as using > UEFI > and is using classic BIOS boot instead. When you installed Fedora and > booted from a CD or USB stick, you likely got the option to either boot > Fedora in classic BIOS mode (probably marked in your BIOS boot menu as > just "USB storage" > or some such) and to boot it in UEFI mode (marked with EFI in the name > somewhere), > I think you probably picked the classic option, causing Fedora to do > a classic install. > Ok... I thought the presence of /boot/efi/EFI meant it was booting UEFI but I checked my MythTV system which hasn't seen a fresh install since 2012 and it has those directories as well. It does have BIOS_BOOT since the main HD is gpt partitioned. > Since you are getting what is most likely a classic BIOS grub version now > when booting now your BIOS likely remembered that you booted in classic > mode > the last time and stuck with that. > > If Windows 10 expects to be loaded through UEFI then chainloading won't > work. > Take a look in your BIOS if you can turn EFI mode on, or try hitting F12 / > F8 > (or some such) to get your BIOS boot menu. Probably you can choose between > UEFI and classic booting your harddisk. > I'll double check but it treats the USB has a hard disk and I don't recall seeing a EFI option. The ONLY option related to EFI in the BIOS is for CD/DVD devices which is set, hence Win10 getting installed EFI using the disc. I may have to actually burn the ISO to disk to get it to boot in UEFI mode. Thanks, Richard
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