Just as a matter of trivia and amusement, Fedora EFI System partitions
are FAT16. Windows and OS X create them as FAT32.
https://bugzilla.redhat.com/show_bug.cgi?id=1046577
I think since the EFI file system is actually a frozen in time FAT
implementation that shouldn't ever change (for compatibil
On 08/30/2015 10:18 AM, Paul Cartwright wrote:
On 08/30/2015 12:17 PM, Gordon Messmer wrote:
Boot0005* Fedora
HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\FEDORA\shim.efi)
Boot0009* UEFI OS
HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EF
On Sun, Aug 30, 2015 at 11:20 AM, Paul Cartwright
wrote:
> do I need to delete duplicates, so there is only 1 fedora, 1 ubuntu, and
> 1 windows entry?
Only if you want to clean up the built-in boot manager listing.
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On Sun, Aug 30, 2015 at 7:21 AM, Paul Cartwright wrote:
> On 08/30/2015 08:28 AM, Tom H wrote:
>> Doesn't the firmware boot screen correspond to the output of "efibootmgr"?
> it looks that way..
> so, tell me what the difference is between Fedora, 0005, and UEFI OS:
>
> Boot0005* Fedora
> HD(8,G
On Sun, Aug 30, 2015 at 4:58 AM, Paul Cartwright wrote:
> ok, so I rebooted, and hit F12 when I saw the Dell logo..
> it gets me to a screen where I see:
>
> UEFI Boot
> Fedora
> UEFI OS
> UEFI OS
> ubuntu
> Windows...
> Fedora
> ubuntu
>
>
> not very descriptive to tell me what kernel or why dup
On 08/30/2015 12:14 PM, Gordon Messmer wrote:
> I'm really trying to explain this in the simplest terms possible. So,
> again, the UEFI firmware loads boot loaders. The boot loaders load
> kernels.
>
> You hit F12 to get a list of UEFI boot targets. What are those
> targets? They're boot loaders
On 08/30/2015 12:17 PM, Gordon Messmer wrote:
>
>> so, tell me what the difference is between Fedora, 0005, and UEFI OS:
>>
>> Boot0005* Fedora
>> HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\FEDORA\shim.efi)
>>
>> Boot0009* UEFI OS
>> HD(8,GPT,ac2fc695-5de9-47d0-a19b
On 08/30/2015 06:21 AM, Paul Cartwright wrote:
so, tell me what the difference is between Fedora, 0005, and UEFI OS:
Boot0005* Fedora
HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\FEDORA\shim.efi)
Boot0009* UEFI OS
HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae
On 08/30/2015 03:58 AM, Paul Cartwright wrote:
not very descriptive to tell me what kernel or why duplicate Fedora &
ubuntu entries..
I'm really trying to explain this in the simplest terms possible. So,
again, the UEFI firmware loads boot loaders. The boot loaders load kernels.
You hit F1
On 08/30/2015 08:28 AM, Tom H wrote:
>> > it gets me to a screen where I see:
>> >
>> > UEFI Boot
>> > Fedora
>> > UEFI OS
>> > UEFI OS
>> > ubuntu
>> > Windows...
>> > Fedora
>> > ubuntu
>> >
>> > not very descriptive to tell me what kernel or why duplicate Fedora &
>> > ubuntu entries..
>> > I se
On Sun, Aug 30, 2015 at 6:58 AM, Paul Cartwright wrote:
> On 08/29/2015 11:30 PM, Chris Murphy wrote:
>>
>> Practically, the user needs to use the UEFI firmware's built-in boot
>> manager (one time boot menu) to choose which OS to boot. In effect
>> this overrides the NVRAM BootOrder, and causes t
On 08/29/2015 11:30 PM, Chris Murphy wrote:
> Practically, the user needs to use the UEFI firmware's built-in boot
> manager (one time boot menu) to choose which OS to boot. In effect
> this overrides the NVRAM BootOrder, and causes the firmware to execute
> the OS specific OSLoader (the particular
On 08/29/2015 11:20 PM, Chris Murphy wrote:
> The one consequence of enabling Secure Boot is the GRUB menu entry for
> Windows will not work. And although I haven't tried this, I actually
> suspect that the os-prober menu entries for other OS's won't work
> either because, e.g. the Fedora GRUB cont
On 08/29/2015 11:30 PM, Chris Murphy wrote:
>> > And while it'd be fantastic if it weren't that way, it really can't be
>> > unless grub is "stable" in the sense that the configuration file syntax is
>> > finished, no new features will be added, grub2-mkconfig produces a
>> > predictable output, an
On Sat, Aug 29, 2015 at 1:47 PM, Gordon Messmer
wrote:
> On 08/29/2015 04:42 AM, Paul Cartwright wrote:
>>
>> then if I update ubuntu I have to either do the efibootmgr -o to change
>> to ubuntu OR from fedora run grub-2mkconfig.. with 2 ESPs it is a manual
>> process to keep grub updated for 2 OS
On Sat, Aug 29, 2015 at 5:20 AM, Paul Cartwright wrote:
> On 08/29/2015 01:25 AM, Chris Murphy wrote:
>>> > Then it is necessary to deactivate the Secureboot. This tool was
>>> > implemented in Windows 8 with the new UEFI Bios, as a safety mechanism
>>> > to prevent malicious software from booting
On 08/29/2015 04:29 PM, Gordon Messmer wrote:
>> that I can deal with.. but there are TWO grub.cfg files which one
>> should I modify with grub2-mkconfig??
>
> The one on the ESP. /boot/grub2/grub.cfg is used under BIOS. It
> normally won't be present on an UEFI system.
this started as a UEFI
On 08/29/2015 12:56 PM, Paul Cartwright wrote:
that I can deal with.. but there are TWO grub.cfg files which one
should I modify with grub2-mkconfig??
The one on the ESP. /boot/grub2/grub.cfg is used under BIOS. It
normally won't be present on an UEFI system.
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On 08/29/2015 12:52 PM, Paul Cartwright wrote:
I will try turning on secure-boot next time I reboot, to see if I can
boot with it turned on.. define "tampered with".. what if you run
grub2-mkconfig.. that tampers with it...
I mean that a root kit can't modify the system firmware, the shim, the
On Sat, Aug 29, 2015 at 2:11 AM, Chris Murphy wrote:
>
> The central problem is that the distros are on a continuum among
> ambivalence, incompetence, and malicious when it comes to multiboot
> cooperation. And GRUB upstream has done a lot of Rube Goldberg
> innovation to try to solve this problem
On 08/29/2015 03:55 PM, Tom H wrote:
>> >
>> > Therefore, this tool will block any operating system from starting,
>> > besides Windows 8. So it must be deactivated.
> That URL's inaccurate.
>
> Fedora (and Ubuntu) have an MS-signed shim that interfaces between the
> EFi firmware's SB and grub.
I o
On 08/29/2015 03:43 PM, Tom H wrote:
>> > oh, I get it.. but still I don't get it... /boot/efi is a separate
>> > partition.. how can /EFI/ubuntu & /EFI/fedora be different... when they
>> > are both under /boot/efi..
> Ubuntu's mounting sda1 at "/boot/efi" and Fedora's mounting sda8 there.
I have
On 08/29/2015 03:33 PM, Gordon Messmer wrote:
>> every time you boot into a specific distro, update the system, and
>> install a new kernel, well, then grub needs to be updated.
>
> To be clear: the grub configuration needs to be updated. Grub, the
> program, does not. Installing a new kernel doe
On 08/29/2015 03:47 PM, Gordon Messmer wrote:
>>
>
> Just pick which system's grub you want to use, and you can stop
> fiddling with efibootmgr. Use grub2-mkconfig in your "primary" system
> to build a complete cfg file.
I want fedora, I just want ubuntu updated so the primary works for me:)
I
On Fri, Aug 28, 2015 at 9:37 PM, Paul Cartwright wrote:
>
> http://www.instructables.com/id/Dual-Boot-Ubuntu-and-Windows-8-UEFI/step4/Deactivating-Fast-Startup-and-Secureboot/
>
> Then it is necessary to deactivate the Secureboot. This tool was
> implemented in Windows 8 with the new UEFI Bios, as
On 08/29/2015 03:11 PM, Gordon Messmer wrote:
>>
>
> Secure Boot is an effective mitigation against some features of root
> kits, and really should be enabled everywhere possible.
>
> Under Secure Boot, the firmware will not load a boot loader if it has
> been tampered with, which will not load a k
On 08/29/2015 04:42 AM, Paul Cartwright wrote:
then if I update ubuntu I have to either do the efibootmgr -o to change
to ubuntu OR from fedora run grub-2mkconfig.. with 2 ESPs it is a manual
process to keep grub updated for 2 OSes..
Just pick which system's grub you want to use, and you can st
On Fri, Aug 28, 2015 at 6:22 PM, Paul Cartwright wrote:
> On 08/28/2015 05:18 PM, Gordon Messmer wrote:
>>
>> From your first message, efibootmgr printed:
>>
>> Boot0002* Fedora
>> HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\fedora\shim.efi)
>>
>> ...
>> Boot0004* u
On 08/28/2015 06:48 PM, Paul Cartwright wrote:
every time you boot into a specific distro, update the system, and
install a new kernel, well, then grub needs to be updated.
To be clear: the grub configuration needs to be updated. Grub, the
program, does not. Installing a new kernel does not
On 08/29/2015 04:20 AM, Paul Cartwright wrote:
that may be true, but however I got my fedora installed on this UEFI box
is the way I am leaving it.. I am pretty sure I have secure boot turned
off. it works, and I go with the KISS method, it works, I'm leaving it
alone:)
Secure Boot is an effect
On 08/29/2015 06:28 AM, Tom H wrote:
> I just went back to your initial email.
>
> The Ubuntu and Fedora ESPs are different. Ubuntu's is sda1 and Fedora's is
> sda8.
>
> Are you looking for the Ubuntu ESP while booted into Fedora or Ubuntu?
>
> I remember an old thread/bug where someone complained
On 08/29/2015 02:11 AM, Chris Murphy wrote:
>> > when I installed ubuntu after that, ubuntu became the default, and grub
>> > had 3 entries for fedora, plus windows 10, plus ubuntu.
> The central problem is that the distros are on a continuum among
> ambivalence, incompetence, and malicious when it
On 08/29/2015 01:25 AM, Chris Murphy wrote:
>> > Then it is necessary to deactivate the Secureboot. This tool was
>> > implemented in Windows 8 with the new UEFI Bios, as a safety mechanism
>> > to prevent malicious software from booting in your PC, as well as “non
>> > authorized” operating system
On Fri, Aug 28, 2015 at 1:33 PM, Paul Cartwright wrote:
>
> I just mounted my ubuntu "/" partition and /boot/efi was... empty.
> I'm pretty sure it was there when I booted ubuntu.. oh wait... /boot/efi
> is a separate partition.. but it is already mounted, and it is fedora,
> not ubuntu... ar
On Fri, Aug 28, 2015 at 7:48 PM, Paul Cartwright wrote:
> On 08/28/2015 06:40 PM, Chris Murphy wrote:
>> Due to many things, including UEFI, and GRUB being overly complicated,
>> and each distro forking GRUB, and also not always keeping it up to
>> date with upstream, there are many variations in
On Fri, Aug 28, 2015 at 7:37 PM, Paul Cartwright wrote:
> On 08/28/2015 06:26 PM, Chris Murphy wrote:
>>> > my system originally came with windows 10. I seem to recall that from
>>> > what I read, you needed to disable secure boot to install linux & grub..
>> That's incorrect, and it's bad advice
On 08/28/2015 06:40 PM, Chris Murphy wrote:
> Due to many things, including UEFI, and GRUB being overly complicated,
> and each distro forking GRUB, and also not always keeping it up to
> date with upstream, there are many variations in GRUB behavior
> possible. So it's not necessarily the case a g
On 08/28/2015 06:26 PM, Chris Murphy wrote:
>> > my system originally came with windows 10. I seem to recall that from
>> > what I read, you needed to disable secure boot to install linux & grub..
> That's incorrect, and it's bad advice to continue to propagate.
> Assertions is should be disabled s
> [2]
> https://bugzilla.redhat.com/show_bug.cgi?id=1022316
Actually...
https://bugzilla.redhat.com/show_bug.cgi?id=1022316#c13
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On Fri, Aug 28, 2015 at 3:18 PM, Gordon Messmer
wrote:
> On 08/28/2015 11:30 AM, Paul Cartwright wrote:
>>>
>>> >Yeah, you will typically have just one system partition. In your
>>> >case, it has different directories for the Fedora and Ubuntu shim and
>>> >grubx64.efi, and grub.cfg.
>>
>> but no
On Fri, Aug 28, 2015 at 11:33 AM, Paul Cartwright
wrote:
> On 08/28/2015 01:19 PM, Gordon Messmer wrote:
>>
>> Have another look. Boot002 and Boot005 are Fedora, and they are
>> identical. They identify \EFI\FEDORA\shim.efi on partition 8.
>> Notably, they don't refer to a kernel at all.
> ok, s
On 08/28/2015 03:22 PM, Paul Cartwright wrote:
oh, I get it.. but still I don't get it... /boot/efi is a separate
partition.. how can /EFI/ubuntu & /EFI/fedora be different... when they
are both under /boot/efi..
In the same way that "/" is a different partition or logical volume for
Ubuntu an
On Fri, Aug 28, 2015 at 11:03 AM, Paul Cartwright
wrote:
> On 08/28/2015 12:30 PM, Chris Murphy wrote:
>> When UEFI Secure Boot is enabled, which it should be if available,
>> especially on a system with Window on it, you need the distro signed
>> shim.efi and grubx64.efi on the EFI system partiti
On 08/28/2015 05:18 PM, Gordon Messmer wrote:
>>
>
> My mistake.
>
> From your first message, efibootmgr printed:
>
> Boot0002* Fedora
> HD(8,GPT,ac2fc695-5de9-47d0-a19b-01e236404130,0x5ae5d800,0x2f800)/File(\EFI\fedora\shim.efi)
>
> ...
> Boot0004* ubuntu
> HD(1,GPT,4cc2fdac-58ea-400c-8ef9-11e1349
On 08/28/2015 11:30 AM, Paul Cartwright wrote:
>Yeah, you will typically have just one system partition. In your
>case, it has different directories for the Fedora and Ubuntu shim and
>grubx64.efi, and grub.cfg.
but now I don't see the ubuntu folder, but the fedora folder.. do these
folders get
On 08/28/2015 01:46 PM, Gordon Messmer wrote:
>> ok, so UEFI loads grub which loads grub.cfg which knows about the
>> different kernels ?
>
> Essentially, yes. UEFI has its own list, which normally isn't
> displayed and is only available with the F12 key. It identifies
> different boot loaders (s
On 08/28/2015 10:33 AM, Paul Cartwright wrote:
ok, so UEFI loads grub which loads grub.cfg which knows about the
different kernels ?
Essentially, yes. UEFI has its own list, which normally isn't displayed
and is only available with the F12 key. It identifies different boot
loaders (such as
On 08/28/2015 01:19 PM, Gordon Messmer wrote:
>
> Have another look. Boot002 and Boot005 are Fedora, and they are
> identical. They identify \EFI\FEDORA\shim.efi on partition 8.
> Notably, they don't refer to a kernel at all.
ok, so UEFI loads grub which loads grub.cfg which knows about the
diffe
On 08/28/2015 03:02 AM, Paul Cartwright wrote:
well it changed now, booting from fedora, the original screen ( before
grub?) when it booted ubuntu default, had a line on the screen before
anything else happened.. something about booting insecure.. then the
grub menu came up. Now that the default
On 08/28/2015 12:30 PM, Chris Murphy wrote:
> When UEFI Secure Boot is enabled, which it should be if available,
> especially on a system with Window on it, you need the distro signed
> shim.efi and grubx64.efi on the EFI system partition. If you use
> grub-install the signed copy is wiped out, and
On Fri, Aug 28, 2015 at 4:10 AM, Paul Cartwright wrote:
> On 08/28/2015 04:22 AM, Tom H wrote:
>> On Thu, Aug 27, 2015 at 6:58 AM, Paul Cartwright
>> wrote:
>>
>>
>> grub2-mkconfig works, but grub2-install /dev/sda gives me an error
>> grub2-install /dev/sda
>> grub2-install: error: /usr/lib/gru
On 08/28/2015 04:22 AM, Tom H wrote:
> On Thu, Aug 27, 2015 at 6:58 AM, Paul Cartwright
> wrote:
>
>
> grub2-mkconfig works, but grub2-install /dev/sda gives me an error
> grub2-install /dev/sda
> grub2-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist.
> Please specify --target
On 08/27/2015 11:22 PM, Gordon Messmer wrote:
> On 08/27/2015 06:02 PM, Paul Cartwright wrote:
>>
>> wow, not exactly sure what happened...
>
> Neither am I, but you've duplicated several of your UEFI boot items.
> Fedora is now 2 and 5. Ubuntu is now 4, 8, and 10.
I read(Googled) that you can d
On 08/27/2015 11:14 PM, Gordon Messmer wrote:
>> not exactly sure which part is UEFI & which is grub, but I will reboot &
>> try that...
>
> UEFI is everything before the grub2 menu, essentially.
well it changed now, booting from fedora, the original screen ( before
grub?) when it booted ubuntu def
On Thu, Aug 27, 2015 at 6:58 AM, Paul Cartwright wrote:
> ok, I am running fedora 22, along with ubuntu & Windows 10. a new kernel
> got installed last night, and I rebooted, but grub doesn't show it, and
> still defaults to the ubuntu OS. I am new to this efibootmgr, and google
> is letting me
On 08/27/2015 06:02 PM, Paul Cartwright wrote:
wow, not exactly sure what happened...
Neither am I, but you've duplicated several of your UEFI boot items.
Fedora is now 2 and 5. Ubuntu is now 4, 8, and 10.
so when I ran the efibootmgr & changed it to default to fedora, it also
used the f
On 08/27/2015 05:44 PM, Paul Cartwright wrote:
not exactly sure which part is UEFI & which is grub, but I will reboot &
try that...
UEFI is everything before the grub2 menu, essentially.
I tried booting into ubuntu & running the grub-mkconfig, hoping it would
update the grub.cfg, but it still
On 08/27/2015 07:31 PM, Gordon Messmer wrote:
>
> You could:
> # efibootmbr -o 0002,0004,0003,,0001
wow, not exactly sure what happened...
I ran that script, using 0009,000C,0004,0003 . when I did the efibootmgr
-v, it still showed the existing sequence, 0004,0003.
then I rebooted. I was
On 08/27/2015 07:31 PM, Gordon Messmer wrote:
>
> After the system powers on, it loads and runs the UEFI firmware. The
> firmware initializes hardware according to a local configuration, and
> then searches the UEFI boot list for the first available boot device.
> That list is what efibootmgr list
On 08/27/2015 03:58 AM, Paul Cartwright wrote:
ok, I am running fedora 22, along with ubuntu & Windows 10. a new kernel
got installed last night, and I rebooted, but grub doesn't show it, and
still defaults to the ubuntu OS. I am new to this efibootmgr
A few things happen in sequence for Linux
On 08/27/2015 08:37 AM, Pete Travis wrote:
>
>
> efibootmgr acts on the firmware boot menu. The firmware boots grub,
> which lives on the efi system partition (It's a file on a vfat
> filesystem, not code in an MBR). grub gives you a menu and boots the
> kernel.
>
ubuntu was the last OS installed
On Aug 27, 2015 5:58 AM, "Paul Cartwright" wrote:
>
> ok, I am running fedora 22, along with ubuntu & Windows 10. a new kernel
> got installed last night, and I rebooted, but grub doesn't show it, and
> still defaults to the ubuntu OS. I am new to this efibootmgr, and google
> is letting me down..
ok, I am running fedora 22, along with ubuntu & Windows 10. a new kernel
got installed last night, and I rebooted, but grub doesn't show it, and
still defaults to the ubuntu OS. I am new to this efibootmgr, and google
is letting me down.. This is all new to me, and I am having a problem
understandi
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