Grub install

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Ohne EFI

sudo bash
mount /dev/sda2 /mnt 
mount /dev/sda3 /mnt/boot 

mount -o bind /dev /mnt/dev 
mount -o bind /sys /mnt/sys 
mount -t proc /proc /mnt/proc 

chroot /mnt /bin/bash 
grub-install /dev/sda
update-grub
exit

Sollte der Fehler “Could not find device for /boot: Not found or not a block device.” auftreten, gibt man folgende Zeile vor dem grub-install ein:

cp /proc/mounts /etc/mtab

Mit EFI

sudo bash
mount /dev/sda2 /mnt 
mount /dev/sda1 /boot/efi

mount -o bind /dev /mnt/dev 
mount -o bind /sys /mnt/sys 
mount -t proc /proc /mnt/proc 

chroot /mnt /bin/bash 
grub-install /dev/sda
update-grub
exit

HP EliteBook G4

$ sudo parted -l
Model: THNSN5512GPUK TOSHIBA (nvme)
Disk /dev/nvme0n1: 512GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End    Size    File system     Name                          Flags
 1      1049kB  379MB  377MB   fat32           EFI system partition          boot, esp
 2      379MB   395MB  16.8MB                  Microsoft reserved partition  msftres
 3      395MB   325GB  325GB                   Basic data partition          msftdata
 4      325GB   495GB  170GB   ext4
 5      495GB   512GB  16.7GB  linux-swap(v1)

mount /dev/nvme0n1p4 /mnt
mount /dev/nvme0n1p1 /mnt/boot/efi

mount -o bind /dev /mnt/dev 
mount -o bind /sys /mnt/sys 
mount -t proc /proc /mnt/proc 
chroot /mnt /bin/bash

grub-install /dev/nvme0n1
Installing for x86_64-efi platform.
Installation finished. No error reported.

update-grub2 
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50_linuxmint.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-54-generic
Found initrd image: /boot/initrd.img-4.15.0-54-generic
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
grub-probe: error: cannot find a GRUB drive for /dev/sda1.  Check your device.map.
Adding boot menu entry for EFI firmware configuration
done

<NO CHAIL>
os-prober | tr ' ' '^' | paste -s -d ' '
</NO CHAIL>

mv /etc/grub.d/30_os-prober /etc/grub.d/06_os-prober
vi /etc/grub.d/06_os-prober

#OSPROBED="`os-prober | tr ' ' '^' | paste -s -d ' '`"
OSPROBED="/dev/nvme0n1p1@/EFI/Microsoft/Boot/bootmgfw.efi:Windows^Boot^Manager:Windows:efi /dev/nvme0n1p4:Linux^Mint^19.2^Tina^(19.2):LinuxMint:linux"

update-grub2
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50_linuxmint.cfg'
Generating grub configuration file ...
Found Windows Boot Manager on /dev/nvme0n1p1@/EFI/Microsoft/Boot/bootmgfw.efi
Found Linux Mint 19.2 Tina (19.2) on /dev/nvme0n1p4
Found linux image: /boot/vmlinuz-4.15.0-54-generic
Found initrd image: /boot/initrd.img-4.15.0-54-generic
Adding boot menu entry for EFI firmware configuration
done

# sudo efibootmgr -v
BootCurrent: 000D
Timeout: 0 seconds
BootOrder: 0011,0013,000D,000A,0010,000E,000B,000C,0000,0001,0002,0003,0004,0005,0006,0007,0008,0009,000F
Boot0000  Startup Menu	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)....ISPH
Boot0001  System Information	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0002  Bios Setup	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0003  3rd Party Option ROM Management	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0004  System Diagnostics	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0005  System Diagnostics	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0006  System Diagnostics	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0007  System Diagnostics	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0008  Boot Menu	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0009  HP Recovery	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot000A* IPV4 Network - Intel(R) Ethernet Connection (4) I219-V	PciRoot(0x0)/Pci(0x1f,0x6)/MAC(40b034e99e48,0)/IPv4(0.0.0.00.0.0.0,0,0)N.....YM....R,Y.....ISPH
Boot000B* THNSN5512GPUK TOSHIBA-27BS1003T52T	BBS(HD,THNSN5512GPUK TOSHIBA-27BS1003T52T,0x400)/PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/NVMe(0x1,00-08-0D-02-00-1D-9C-DA)......ISPH
Boot000C* Intel Corporation: IBA CL Slot 00FE v0110	BBS(Network,Intel Corporation: IBA CL Slot 00FE v0110,0x0)/PciRoot(0x0)/Pci(0x1f,0x6)/IPv4(0.0.0.00.0.0.0,0,0)......ISPH
Boot000D* Verbatim STORE N GO 1242000000000826	PciRoot(0x0)/Pci(0x14,0x0)/USB(1,0)N.....YM....R,Y.....ISPH
Boot000E  USB:  	BBS(65535,,0x0)/PciRoot(0x0)/Pci(0x14,0x0)......ISPH
Boot000F  Network Boot	FvVol(a881d567-6cb0-4eee-8435-2e72d33e45b5)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH
Boot0010* IPV6 Network - Intel(R) Ethernet Connection (4) I219-V	PciRoot(0x0)/Pci(0x1f,0x6)/MAC(40b034e99e48,0)/IPv6([::]:<->[::]:,0,0)N.....YM....R,Y.....ISPH
Boot0011* ubuntu	HD(1,GPT,7f3b4501-d7e9-450e-b82a-5104c336081c,0x800,0xb4000)/File(\EFI\ubuntu\shimx64.efi)
Boot0013* Windows Boot Manager	HD(1,GPT,7f3b4501-d7e9-450e-b82a-5104c336081c,0x800,0xb4000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...te...................ISPH

# sudo efibootmgr -o 0011
BootCurrent: 000D
Timeout: 0 seconds
BootOrder: 0011
Boot0000  Startup Menu
Boot0001  System Information
Boot0002  Bios Setup
Boot0003  3rd Party Option ROM Management
Boot0004  System Diagnostics
Boot0005  System Diagnostics
Boot0006  System Diagnostics
Boot0007  System Diagnostics
Boot0008  Boot Menu
Boot0009  HP Recovery
Boot000A* IPV4 Network - Intel(R) Ethernet Connection (4) I219-V
Boot000B* THNSN5512GPUK TOSHIBA-27BS1003T52T
Boot000C* Intel Corporation: IBA CL Slot 00FE v0110
Boot000D* Verbatim STORE N GO 1242000000000826
Boot000E  USB:  
Boot000F  Network Boot
Boot0010* IPV6 Network - Intel(R) Ethernet Connection (4) I219-V
Boot0011* ubuntu
Boot0013* Windows Boot Manager



# grub-install -v
grub-install: info: executing modprobe efivars 2>/dev/null.
grub-install: info: Looking for /sys/firmware/efi ...
grub-install: info: ...found.
Installing for x86_64-efi platform.
grub-install: info: adding `hd0' -> `/dev/nvme0n1' from device.map.
grub-install: info: /dev/nvme0n1p1 is present.
grub-install: info: Looking for /dev/nvme0n1p1.
grub-install: info: /dev/nvme0n1 is a parent of /dev/nvme0n1p1.
grub-install: info: /dev/nvme0n1p1 starts from 2048.
grub-install: info: opening the device hd0.
[...]
grub-install: info: scanning hd0 for LDM.
grub-install: info: no LDM signature found.
grub-install: info: Scanning for lvm devices on disk hd0.
grub-install: info: no LVM signature found.
grub-install: info: Partition 0 starts from 2048.
grub-install: info: /dev/nvme0n1p1 is present.
grub-install: info: Looking for /dev/nvme0n1p1.
grub-install: info: /dev/nvme0n1 is a parent of /dev/nvme0n1p1.
grub-install: info: /dev/nvme0n1p1 starts from 2048.
grub-install: info: opening the device hd0.
[...]
grub-install: info: Partition 0 starts from 2048.
grub-install: info: drive = 0.
grub-install: info: the size of hd0 is 1000215216.
grub-install: info: copying `/usr/lib/grub/x86_64-efi/net.mod' -> `/boot/grub/x86_64-efi/net.mod'.
[...]
grub-install: info: /dev/nvme0n1p4 is present.
grub-install: info: Looking for /dev/nvme0n1p4.
grub-install: info: /dev/nvme0n1 is a parent of /dev/nvme0n1p4.
grub-install: info: /dev/nvme0n1p4 starts from 635619328.
grub-install: info: opening the device hd0.
[...]
grub-install: info: Partition 0 starts from 2048.
grub-install: info: grub-mkimage --directory '/usr/lib/grub/x86_64-efi' --prefix '/boot/grub' --output '/boot/grub/x86_64-efi/core.efi' --format 'x86_64-efi' --compression 'auto'  --config '/boot/grub/x86_64-efi/load.cfg' 'ext2' 'part_gpt' 'search_fs_uuid' 
.
grub-install: info: the size of config file is 0x68.
grub-install: info: the total module size is 0x53e8.
grub-install: info: reading /usr/lib/grub/x86_64-efi/kernel.img.
[...]
grub-install: info: Registering with EFI: distributor = `ubuntu', path = `\EFI\ubuntu\shimx64.efi', ESP at hd0,gpt1.
grub-install: info: executing efibootmgr --version </dev/null >/dev/null.
grub-install: info: executing modprobe -q efivars.
grub-install: info: executing efibootmgr -b 0011 -B.
[...]
grub-install: info: executing efibootmgr -c -d /dev/nvme0n1 -p 1 -w -L ubuntu -l \EFI\ubuntu\shimx64.efi.

Boot-Repair

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

sudo chroot "/mnt/boot-sav/sda5" dpkg --configure -a
sudo chroot "/mnt/boot-sav/sda5" apt-get install -fy
sudo chroot "/mnt/boot-sav/sda5" apt-get purge -y --force-yes grub*-common grub-common:i386 shim-signed linux-signed*
sudo chroot "/mnt/boot-sav/sda5" apt-get install -y --force-yes grub-pc linux-generic

Kernel Book Verbose

How do I enable verbose mode at boot?
How to enable boot messages to be printed on screen during boot up?

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
GRUB_CMDLINE_LINUX_DEFAULT="nosplash debug"
GRUB_CMDLINE_LINUX=""
  1. Start your system and wait for the GRUB menu to show (if you don’t see a GRUB menu, press and hold the left Shift key right after starting the system).
  2. Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
  3. Go down to the line starting with linux and remove the parameters quiet and splash.
  4. Now press Ctrl + x to boot.

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