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#1 Yesterday 10:40:45

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Change root partition to another

I am trying to increase the size of my partition, but due to the horrendous partitioning done on my disk, simply resizing it won't work. I have already moved over my entire / to the new partition, all I believe needs to be done is to make my system use the new partition as root, how can I do that?

I also used archinstall to install Arch, not sure if it's against the rules because it wasn't mentioned in the list.

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#2 Yesterday 11:44:51

dasrubbellos
Member
Registered: 2026-06-06
Posts: 7

Re: Change root partition to another

If you've moved everything correctly, then all you need to do is mount the new root as / in fstab or whatever permanent mount mechanism you use and point your bootloader at the new root partition, depending on your bootloader and general boot setup.

I'd also check if you've actually copied everything correctly. How did you "move" your data?

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#3 Yesterday 11:51:03

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

"I'd also check if you've actually copied everything correctly. How did you "move" your data?"
I meant to say copy, I mounted both partitions and ran "sudo rsync -axHAX --numeric-ids ---info=progress2 /mnt/old-place /mnt/new-place/" where old-place is the original partition. I checked the partition and it looks pretty identical in my file manager.

I'll go and do what you said to point Arch to it, thank you

Last edited by ArchMisspelled (Yesterday 12:07:27)

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#4 Yesterday 12:49:20

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

Well, there's progress. When I boot into the new Arch Linux entry in my grub, it panics and gives "VFS: Unable to mount root fs on unknown-block(0,0)". How can I fix that?

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#5 Yesterday 13:20:54

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

Some details

The fstab on the old partition (which works and I am typing this on it) marks root on its own partition
The fstab on the new partition (which doesn't work) marks root on itself too, which is where I want to boot into

I for some reason do not have a grub directory in /boot, it is in /efi/grub instead

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#6 Yesterday 14:27:06

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

Please post the output of 

lsblk -f

your old and new fstab and the grub.cfg

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#7 Yesterday 14:54:57

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

lsblk -f
[archie@archie-machine ~]$ lsblk -f
NAME        FSTYPE FSVER LABEL UUID                                 FSAVAIL FSUSE% MOUNTPOINTS
zram0       swap   1     zram0 49e3a041-51d1-4130-819d-237fa3791abe                [SWAP]
nvme0n1                                                                            
├─nvme0n1p1 vfat   FAT32       C284-EBCD                                           
├─nvme0n1p2 ext4   1.0         11383ee4-5546-4f21-9a5c-0f57a741f7d0                
├─nvme0n1p3 ext4   1.0         34e03703-08aa-4e8a-9e24-df76cff7d2e7                
├─nvme0n1p4 vfat   FAT32       BAFE-09EF                                           
├─nvme0n1p5 ext4   1.0         bb492f3a-d22a-41df-aa35-592f25c26981   29.3G    74% /
├─nvme0n1p6 vfat   FAT32       18E8-DC21                             964.6M     3% /boot
├─nvme0n1p7 vfat   FAT32       EE02-EF52                                           
└─nvme0n1p8 vfat   FAT32       18E8-40DD                             860.7M    14% /efi

contents of old fstab (Works and I am writing this on it)

[archie@archie-machine ~]$ cat /etc/fstab
# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# /dev/nvme0n1p5
UUID=bb492f3a-d22a-41df-aa35-592f25c26981       /               ext4            rw,relatime     0 1

# /dev/nvme0n1p6
UUID=18E8-DC21          /boot           vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro    0 2

# /dev/nvme0n1p8
UUID=18E8-40DD          /efi            vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro    0 2

/swapfile none swap defaults 0 0

contents of new fstab (Doesn't work but I want to switch to it)

[archie@archie-machine temporary_mount_point]$ cat etc/fstab
# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# /dev/nvme0n1p2
UUID=11383ee4-5546-4f21-9a5c-0f57a741f7d0       /               ext4            rw,relatime     0 1

# /dev/nvme0n1p6
UUID=18E8-DC21          /boot           vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro    0 2

# /dev/nvme0n1p8
UUID=18E8-40DD          /efi            vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro    0 2

/swapfile none swap defaults 0 0

grub.cfg contents (of old partition which works and I am on it right now)

[archie@archie-machine ~]$ cat /efi/grub/grub.cfg 
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi

if [ "${env_block}" ] ; then
  set env_block="(${root})${env_block}"
  export env_block
  load_env -f "${env_block}"
fi

if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   if [ "${env_block}" ] ; then
     save_env -f "${env_block}" next_entry
   else
     save_env next_entry
   fi
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    if [ "${env_block}" ] ; then
      save_env -f "${env_block}" saved_entry
    else
      save_env saved_entry
    fi

  fi
}

function load_video {
  if [ x$grub_platform = xefi ]; then
    insmod efi_gop
    insmod efi_uga
  elif [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root bb492f3a-d22a-41df-aa35-592f25c26981
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=10
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-bb492f3a-d22a-41df-aa35-592f25c26981' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_gpt
        insmod fat
        search --no-floppy --fs-uuid --set=root 18E8-DC21
        echo    'Loading Linux linux-zen ...'
        linux   /vmlinuz-linux-zen root=/dev/nvme0n1p5 rw  loglevel=3 quiet
}
submenu 'Advanced options for Arch Linux' $menuentry_id_option 'gnulinux-advanced-bb492f3a-d22a-41df-aa35-592f25c26981' {
        menuentry 'Arch Linux, with Linux linux-zen' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-zen-advanced-bb492f3a-d22a-41df-aa35-592f25c26981' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                echo    'Loading Linux linux-zen ...'
                linux   /vmlinuz-linux-zen root=/dev/nvme0n1p5 rw  loglevel=3 quiet
        }
        menuentry 'Arch Linux, with Linux linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-advanced-bb492f3a-d22a-41df-aa35-592f25c26981' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                echo    'Loading Linux linux ...'
                linux   /vmlinuz-linux root=/dev/nvme0n1p5 rw  loglevel=3 quiet
        }
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/15_ostree ###
### END /etc/grub.d/15_ostree ###

### BEGIN /etc/grub.d/15_uki ###
if [ "$grub_platform" = "efi" ]; then
  uki
fi
### END /etc/grub.d/15_uki ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
  insmod bli
fi
### END /etc/grub.d/25_bli ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Arch Linux (rolling) (on /dev/nvme0n1p2)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
        insmod part_gpt
        insmod fat
        search --no-floppy --fs-uuid --set=root 18E8-DC21
        linux /vmlinuz-linux-zen root=/dev/nvme0n1p2
}
submenu 'Advanced options for Arch Linux (rolling) (on /dev/nvme0n1p2)' $menuentry_id_option 'osprober-gnulinux-advanced-11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
        menuentry 'Arch Linux (rolling) (on /dev/nvme0n1p2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-linux-zen--11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                linux /vmlinuz-linux-zen root=/dev/nvme0n1p2
        }
        menuentry 'Arch Linux (rolling) (on /dev/nvme0n1p2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-linux--11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                linux /vmlinuz-linux root=/dev/nvme0n1p2
        }
}


### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
if [ "$grub_platform" = "efi" ]; then
        fwsetup --is-supported
        if [ "$?" = 0 ]; then
                menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
                        fwsetup
                }
        fi
fi
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###

I am unable to provide grub.cfg of the new partition as it does not have a grub directory in /efi.

nvme0n1p2 is the partition I wish to switch to, and the one being referred to as "new" here.

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#8 Yesterday 15:10:09

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

I am unable to provide grub.cfg of the new partition as it does not have a grub directory in /efi.

You're not supposed to have multiple grub.cfg's - there's the one where you installed grub.

The one you posted has what seems to be a useful entry "Arch Linux (rolling) (on /dev/nvme0n1p2)" - is that what you're currently trying and failing to boot?

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#9 Yesterday 15:21:46

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

The one you posted has what seems to be a useful entry "Arch Linux (rolling) (on /dev/nvme0n1p2)" - is that what you're currently trying and failing to boot?

Yes

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#10 Yesterday 16:16:04

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

With that label and from that ESP? (You're not switching between boot partitions in the UEFI between the successful boot of 'Arch Linux, with Linux linux-zen' and failing 'Arch Linux (rolling) (on /dev/nvme0n1p2)'?
Edit the boot label to prove to yourself that this is the relevant file (add a random marker like "POC")

You *might* be lacking "insmod gzio" but both entries are booting from 18E8-DC21 (same kernel and initramfs)

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#11 Yesterday 17:01:33

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

(You're not switching between boot partitions in the UEFI between the successful boot of 'Arch Linux, with Linux linux-zen' and failing 'Arch Linux (rolling) (on /dev/nvme0n1p2)?

That's what I am trying to do, yes. If it's a bad idea, tell me and I will try to adjust.

Edit the boot label to prove to yourself that this is the relevant file (add a random marker like "POC")

I don't know how to do that, I went into grub.cfg (I shouldn't edit it) and added a "POC" suffix to the "Arch Linux (rolling) (on /dev/nvme0n1p2)" entry in the menu and it did show up when I rebooted.

You *might* be lacking "insmod gzio" but both entries are booting from 18E8-DC21 (same kernel and initramfs)

I probably am, based on this output.

[archie@archie-machine ~]$ insmod gzio
insmod: ERROR: could not load module gzio: No such file or directory

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#12 Yesterday 20:09:26

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

That's what I am trying to do, yes.

Using the ESP you already have? That's a reasonable approach.

it did show up when I rebooted.it did show up when I rebooted.

Good, means that's the relevant grub.cfg

insmod: ERROR: could not load module gzio: No such file or directory

No, that would go into the grub.cfg - check the section for your old installation.

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#13 Today 09:52:10

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

Here's the new grub.cfg, I added 

insmod gzio

to the start of the broken "Arch Linux (Rolling)" entry. Still panics with the same error unfortunately.

[archie@archie-machine ~]$ sudo cat /efi/grub/grub.cfg
[sudo] password for archie: 
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi

if [ "${env_block}" ] ; then
  set env_block="(${root})${env_block}"
  export env_block
  load_env -f "${env_block}"
fi

if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   if [ "${env_block}" ] ; then
     save_env -f "${env_block}" next_entry
   else
     save_env next_entry
   fi
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    if [ "${env_block}" ] ; then
      save_env -f "${env_block}" saved_entry
    else
      save_env saved_entry
    fi

  fi
}

function load_video {
  if [ x$grub_platform = xefi ]; then
    insmod efi_gop
    insmod efi_uga
  elif [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root bb492f3a-d22a-41df-aa35-592f25c26981
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=10
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-bb492f3a-d22a-41df-aa35-592f25c26981' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_gpt
        insmod fat
        search --no-floppy --fs-uuid --set=root 18E8-DC21
        echo    'Loading Linux linux-zen ...'
        linux   /vmlinuz-linux-zen root=/dev/nvme0n1p5 rw  loglevel=3 quiet
}
submenu 'Advanced options for Arch Linux' $menuentry_id_option 'gnulinux-advanced-bb492f3a-d22a-41df-aa35-592f25c26981' {
        menuentry 'Arch Linux, with Linux linux-zen' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-zen-advanced-bb492f3a-d22a-41df-aa35-592f25c26981' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                echo    'Loading Linux linux-zen ...'
                linux   /vmlinuz-linux-zen root=/dev/nvme0n1p5 rw  loglevel=3 quiet
        }
        menuentry 'Arch Linux, with Linux linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-advanced-bb492f3a-d22a-41df-aa35-592f25c26981' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                echo    'Loading Linux linux ...'
                linux   /vmlinuz-linux root=/dev/nvme0n1p5 rw  loglevel=3 quiet
        }
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/15_ostree ###
### END /etc/grub.d/15_ostree ###

### BEGIN /etc/grub.d/15_uki ###
if [ "$grub_platform" = "efi" ]; then
  uki
fi
### END /etc/grub.d/15_uki ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
  insmod bli
fi
### END /etc/grub.d/25_bli ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Arch Linux (rolling) (on /dev/nvme0n1p2) POC' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
        insmod gzio
        insmod part_gpt
        insmod fat
        search --no-floppy --fs-uuid --set=root 18E8-DC21
        linux /vmlinuz-linux-zen root=/dev/nvme0n1p2
}
submenu 'Advanced options for Arch Linux (rolling) (on /dev/nvme0n1p2)' $menuentry_id_option 'osprober-gnulinux-advanced-11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
        menuentry 'Arch Linux (rolling) (on /dev/nvme0n1p2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-linux-zen--11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                linux /vmlinuz-linux-zen root=/dev/nvme0n1p2
        }
        menuentry 'Arch Linux (rolling) (on /dev/nvme0n1p2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-linux--11383ee4-5546-4f21-9a5c-0f57a741f7d0' {
                insmod part_gpt
                insmod fat
                search --no-floppy --fs-uuid --set=root 18E8-DC21
                linux /vmlinuz-linux root=/dev/nvme0n1p2
        }
}


### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
if [ "$grub_platform" = "efi" ]; then
        fwsetup --is-supported
        if [ "$?" = 0 ]; then
                menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
                        fwsetup
                }
        fi
fi
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###

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#14 Today 11:17:46

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

Mounting nvme0n1p2 otherwise is no problem? No errors?
https://wiki.archlinux.org/title/Genera … l_messages and link a video/screenshot of the error.

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#15 Today 12:00:17

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

Video: https://youtu.be/q2LIsLKjmOo

Before that, I edited the GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub to be 

GRUB_CMDLINE_LINUX_DEFAULT="loglevel=8 debug earlyprintk=vga,keep"

then ran 

sudo grub-mkconfig

Also so far, I'd like to thank you for persisting this long.

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#16 Today 12:24:22

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

If you don't have a tripod, you can makeshift one out of two books: -\_
But you actually get a kernel panic w/ a QR-code, it'll explain what's going wrong.

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#17 Today 12:53:59

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

Oh, you're right. I thought the QR-Code would bring me to some generic page that's like "oh since your root fs couldn't mount, it means it didn't mount."
The full page: https://pastebin.com/1u7wCzgH

What I *believe* happened is that it's trying to access "/dev/nvme0n1p2" instead of its UUID, but it's probably not that.

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#18 Today 13:46:25

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

[    0.929698] Console: switching to colour frame buffer device 240x67
[    0.929963] VFS: Cannot open root device "/dev/nvme0n1p2" or unknown-block(0,0): error -6
[    0.929972] Please append a correct "root=" boot option; here are the available partitions:
[    0.929980] List of all bdev filesystems:
[    0.929981]  ext3
[    0.929983]  ext2
[    0.929984]  ext4
[    0.929985]  fuseblk
[    0.929985]  btrfs

The nvme isn't detected at all - if you were not using the same initramfs I'd say you don't have the nvme modules in the initramfs…

ls -l /boot/initramfs*
for name in /boot/initramfs*; do echo $name; lsinitcpio $name | grep nvme; done

I'll point out that you're booting grub from nvme0n1p8 but are booting nvme0n1p2 from nvme0n1p6

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#19 Today 13:55:26

ArchMisspelled
Member
Registered: Yesterday
Posts: 11

Re: Change root partition to another

ls -l /boot/initramfs*
for name in /boot/initramfs*; do echo $name; lsinitcpio $name | grep nvme; done
[archie@archie-machine ~]$ ls /boot
vmlinuz-linux  vmlinuz-linux-zen

Uh..... my /boot is missing initramfs, it only contains my Linux kernels, I believe.

I'll point out that you're booting grub from nvme0n1p8 but are booting nvme0n1p2 from nvme0n1p6

How would I fix that?

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#20 Today 14:07:13

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,933

Re: Change root partition to another

"--set=root 18E8-40DD" (but leave the working config alone)

ls -lR /efi

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