Tips for accessibly Managing/Navigating Grub2 in a Dual boot Scenario?
faginbagin
helen.buus at gmail.com
Mon Jun 12 15:56:48 UTC 2023
Glad you found a solution that works for you. If you need or want to
change things, one thing I wanted to mention, it doesn't look like you
need to tinker with efibootmgr to control the boot process. At least not
as long as you don't install another OS and are OK using grub2.
The output you got from efibootmgr shows that grub2 is the default boot
loader that the UEFI boot manager will load, because ubuntu IS grub2.
ubuntu, in this case, is just a label for a folder in the EFI partition
which contains the grub2 boot loader. How do I know know UEFI boot
manager will, by default, hand over control to grub2? Because:
BootCurrent = 0001
BootOrder lists 0001 first.
Boot0001 points to ubuntu
Although it's not shown in your output, ubuntu points to a file in the
folder, EFI/ubuntu. You could see that if you ran efibootmgr in verbose
mode: efibootmgr -v
When you are running the Ubuntu OS, the EFI/ubuntu folder is
/boot/efi/EFI/ubuntu. You need root permission to examine it. If you
execute: sudo ls -l /boot/efi/EFI/ubuntu, you should see something like
what I see:
total 4314
-rwx------ 1 root root 108 May 3 10:47 BOOTX64.CSV
-rwx------ 1 root root 126 May 3 10:47 grub.cfg
-rwx------ 1 root root 2594696 May 3 10:47 grubx64.efi
-rwx------ 1 root root 860824 May 3 10:47 mmx64.efi
-rwx------ 1 root root 960472 May 3 10:47 shimx64.efi
Hope that's not too much information, or too little!
On 6/11/2023 8:29 PM, Al Puzzuoli wrote:
>
> Thanks to everyone for the help! End and then up arrow once does the
> trick! That’s good enough for me for now. I’ll play around with
> figuring out why I can’t set the boot defaults later.
>
> --Al
>
> *From:*Rob Whyte <fudge at thefudge.net>
> *Sent:* Sunday, June 11, 2023 6:29 PM
> *To:* Al Puzzuoli <alpuzz at gmail.com>; sonfire11 at gmail.com;
> ubuntu-accessibility at lists.ubuntu.com
> *Subject:* Re: Tips for accessibly Managing/Navigating Grub2 in a Dual
> boot Scenario?
>
> Push end to go to bottom of list and up arrow once.
>
> That is how I reliably do it.
>
> I depends on age of system of course.
>
> Might be worthwhile trying from the bottom though instead of arrowing
> down through a growing list of options.
>
> cheers
>
> On 12/6/23 07:23, Al Puzzuoli wrote:
>
> Thanks!
>
> I understand this in principle now; but either something is odd or
> more likely, I’m still just confused.
>
> When I run efibootmgr, I get the following:
>
> BootCurrent: 0001
>
> Timeout: 1 seconds
>
> BootOrder: 0001,0000,0004,0005,0002,0003
>
> Boot0000* Windows Boot Manager
>
> Boot0001* ubuntu
>
> Boot0002* Generic Usb Device
>
> Boot0003* CD/DVD Device
>
> Boot0004* UEFI: PXE IPv4 Intel(R) Ethernet Connection (17) I219-LM
>
> Boot0005* UEFI: PXE IPv6 Intel(R) Ethernet Connection (17) I219-LM
>
> So:
>
> Since Boot0000* Windows Boot Manager is the first item in the
> list, I should be able to make the machine boot to Windows by
> setting GRUB_DEFAULT=0, and then running update-grub, right? Only
> problem is GRUB_DEFAULT is already set to 0, and with this
> setting, the machine boots to Linux. Therefore, I tried
> grub_default=1, but the machine still boots to Linux.
>
> I also tried grub_default=saved, and then playing with the
> grub-set-default command. Whether I set it to 0 or 1, I still end
> up in Linux.
>
> Playing with the grub-reboot command yields similar results. No
> matter what values I use for any of these commands, I either end
> up booting to Linux, or to a place where I don’t have a screen
> reader and can’t figure out what’s going on.
>
> If I didn’t know any better, I would almost think that I am
> actually booting to the Windows Boot manager, but the Windows boot
> manager is defaulting to load Ubuntu. Is that even possible? I
> can’t imagine the Ubuntu 23.04 installer would have modified the
> Windows boot manager as well as installing Grub?
>
> At this point, I may have to connect a monitor and resort to
> sighted assistance. Very bizarre indeed.
>
> Thanks again,
>
> --Al
>
> *From:*Ubuntu-accessibility
> <ubuntu-accessibility-bounces at lists.ubuntu.com>
> <mailto:ubuntu-accessibility-bounces at lists.ubuntu.com> *On Behalf
> Of *sonfire11 at gmail.com
> *Sent:* Sunday, June 11, 2023 12:51 PM
> *To:* ubuntu-accessibility at lists.ubuntu.com
> *Subject:* RE: Tips for accessibly Managing/Navigating Grub2 in a
> Dual boot Scenario?
>
> Hi,
>
> I can directly edit the grub config file. In my setup, I turned on
> the beep, set timeout to -1 which will wait for a response
> forever, and also set the menu to visible instead of hidden. Also
> disable all of the extra recovery options. When you are in a
> terminal window, type sudo efibootmgr and provide your sudo
> password. This will tell you what order the boot managers are in
> and which one is the default. After the setup, the menu will wait
> forever, displaying the menu and only give you the active boot
> options <windows or ubuntu>. It will also beep when it is ready
> for a response. You can also use the efibootmgr to determine what
> menu option to use for the default OS option.
>
> *From:*Ubuntu-accessibility
> <ubuntu-accessibility-bounces at lists.ubuntu.com> *On Behalf Of
> *faginbagin
> *Sent:* Sunday, June 11, 2023 12:27 PM
> *To:* ubuntu-accessibility at lists.ubuntu.com
> *Subject:* Re: Tips for accessibly Managing/Navigating Grub2 in a
> Dual boot Scenario?
>
> On 6/11/2023 12:17 PM, faginbagin wrote:
>
> On 6/11/2023 11:57 AM, Al Puzzuoli wrote:
>
> Hi all,
>
> On one of my machines, I have installed Ubuntu 23.04
> alongside Windows 11. By default now, the machine boots
> into Linux. My issue is that I’m not sure how to reliably
> boot to Windows when I want to do so. I’ve enabled the
> Grub beep, and after the beep, I’ve experimented with
> pressing down arrow and then enter, pressing down arrow
> twice, and then enter, etc. Maybe I need to down arrow 3
> or 4 times, but the upshot is I’m just not sure. I’m
> guessing there are a number of entries I could care less
> about such as Memtest 386 and older kernels will get added
> as time passes.
>
> What’s the best way to deal with this these days? Sounds
> like you’re no longer supposed to edit grub.conf directly.
> I’ve seen talk about the grub-customizer tool but I’m
> having issues installing that in 23.04.
>
> Seems like this used to be easier 15 or 20 years ago with
> the old Grub. Ah well.
>
> Thanks,
>
> --Al
>
> Would it help if grub saved your last boot option? In other
> words, if you do boot into Windows, the next time you reboot,
> the default choice will be windows? If so, the attached patch
> might help (if the list allows text format patches). It's from
> a 22.04 system (I don't have 23.04 installed), but
> /etc/default/grub has not seen a lot of changes over time. I
> hope it helps.
>
> Forgot to mention that this patch also disables the splash screen
> and makes sure there's a 10 second timeout. If you don't want
> those changes, but do want to save your last boot as the next
> default boot option. you only need to change GRUB_DEFAULT and add
> GRUB_SAVEDEFAULT as shown in the patch. I did comment out
> GRUB_TIMEOUT_STYLE but I'm not sure it is needed. For more details
> see the grub documentation, especially section 6.1:
> https://www.gnu.org/software/grub/manual/grub/grub.html#Simple-configuration
>
> HTH
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-accessibility/attachments/20230612/d3cd05b0/attachment-0001.html>
More information about the Ubuntu-accessibility
mailing list