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kme : bootmanager   39

grub2 - How to get to the GRUB menu at boot-time? - Ask Ubuntu | https://askubuntu.com/
Menu will appear if you press and hold Shift during loading Grub, if you boot using BIOS. When your system boots using UEFI, press Esc.

For permanent change you'll need to edit your /etc/default/grub file -- place a "#" symbol at the start of line GRUB_HIDDEN_TIMEOUT=0.

Save changes and run sudo update-grub to apply changes.

Documentation: https://help.ubuntu.com/community/Grub2
grub  bootmanager  dammitbrain  solution 
11 weeks ago by kme
dual boot - How to get grub2 to remember last choice? - Ask Ubuntu - https://askubuntu.com/
The documentation in this case is wrong. All variables in /etc/default/grub start with GRUB_, so it's GRUB_DEFAULT=saved, not DEFAULT=saved. I've corrected the Ubuntu wiki to reflect that.

The official grub manual describes this correctly: http://www.gnu.org/software/grub/manual/grub.html#Simple-configuration

Put the following in /etc/default/grub:
<code class="language-bash">
GRUB_DEFAULT=saved
GRUB_SAVEDEFAULT=true
</code>

Then run:
<code class="language-bash">
sudo update-grub
</code>
linux  windows  grub  grub2  dualboot  bootmanager  configfile  configsetting  dammitbrain  solution 
march 2018 by kme
Grub2/Troubleshooting - Community Help Wiki
This is what you do when you get an 'error: file not found' error and a "grub rescue>" prompt.

set prefix=(hdX,Y)/boot/grub
set root=(hdX,Y)
insmod normal
normal
grub  troubleshooting  solution  bootmanager  errormessage  linux  ubuntu 
may 2017 by kme
Windows 7 won't boot "The boot selection failed because a - Microsoft Community - http://answers.microsoft.com/
g) At the DOS prompt type the following three commands:
bootrec.exe  /fixmbr
bootrec.exe  /fixboot (may return an 'Eliment not found' message)
bootrec.exe  /RebuildBcd
windows  systemrecovery  bootmanager  troubleshooting  maybesolution 
october 2015 by kme
GRUB. Which config file do I modify?
Don't worry about /etc/sysconfig/grub. You should only have to edit /boot/grub/grub.conf .


Still have no idea what the difference is. The 'grubby' util seems to be used to "clone" existing entries into new ones. Basically, only edit /etc/grub.conf is the answer, I guess.
centos  grub  configfile  bootmanager  sortofsolution 
may 2015 by kme
GRUB - ArchWiki
GRUB can set the framebuffer for both GRUB itself and the kernel. The old vga= way is deprecated. The preferred method is editing /etc/default/grub as the following sample:

GRUB_GFXMODE=1024x768x32

GRUB_GFXPAYLOAD_LINUX=keep
grub  arch  hiresconsole  bootmanager  solution 
january 2014 by kme
VirtualBox and Console only Linux
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=1280x800x32
set gfxpayload=1600x1200x32
insmod gfxterm
insmod vbe
terminal_output gfxterm
if terminal_output gfxterm; then true ; else
terminal gfxterm
fi
fi
grub  arch  linux  bootmanager  eyecandy  console  hiresconsole  solution 
january 2014 by kme
Mac OS X: How to start up in single-user or verbose mode
Starting up in single-user or verbose mode

1. Shut down your Mac if it is on.
2. Press the power button to start the computer.
3. Immediately press and hold the Command (Apple) key and one of the following:
the "s" key for single-user mode.  (Command-S)
the "v" key for verbose mode.  (Command-V)
mac  osx  bootmanager  singleusermde  troubleshooting 
february 2013 by kme
How To Use UUID To Mount Partitions / Volumes Under Ubuntu Linux
How do I find out UUID for /dev/sdb2?

To probe filesystem type and read label and uuid for /dev/sdb2 (or any other device) use vol_id command:
# vol_id --uuid {/dev/device } # vol_id --uuid /dev/sdb2 $ sudo vol_id --uuid /dev/sdb2

Sample output:
41c22818-fbad-4da6-8196-c816df0b7aa8

List all UUIDs Use blkid command-line utility to locate/print block device attributes:
$ sudo blkid
linux  blkid  sysadmin  storage  grub  troubleshooting  bootmanager 
january 2013 by kme
Grub2 - Community Ubuntu Documentation
Cobalt (HP xw440) is doing this again. Here's the fix:

mount the root device as '/mnt'
for i in /dev /dev/pts /proc /sys; do sudo mount -B $i /mnt$i; done
chroot
grub-install /dev/sdX
grub-install --recheck /dev/sdx (optional)

A script to do same:
#!/bin/bash
ROOTFS=/dev/sda5
ROOTDEV=${ROOTFS:0:-1}
sudo mount $ROOTFS /mnt
for i in /dev /dev/pts /proc /sys; do sudo mount -B $i /mnt$i; done
sudo chroot /mnt
sudo grub-install $ROOTDEV && sudo grub-install --recheck $ROOTDEV
grub  grub2  ubuntu  cobalt  solution  bootmanager  xw4400  annoyance 
september 2011 by kme

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