Error occurred during GRUB boot: device 'FED8 - 19D0' not found.
Error occurred during GRUB boot: device 'FED8 - 19D0' not found.
Hi there! You're starting out with Linux and using a dual boot setup with Pop-Os and Windows 10. Recently, you noticed an issue where the GRUB bootloader keeps showing this error when you pick Windows from the menu. The message says: "no such device: FED8-19D0" and mentions a missing disk. After trying to mount your Windows drive on Linux, it worked fine. This seems to be connected to that one time you mounted the C drive, which holds your Windows installation. Since you're just beginning, try simplifying things—make sure your bootloader is correctly installed and check if the drive is properly recognized. Let me know if you need help with that!
Hi there! You're starting out with Linux, which is great. You're using a dual-boot setup with Pop-Os and Windows 10, but you're running into an issue with your GRUB bootloader. The error says a device called "FED8-19D0" isn't found on your disk, specifically in the first partition. It seems like this happened after you tried to mount your C drive using a tool. Also, secure boot and legacy boot are both off. Since you're new, try simplifying things: check if the disk is properly mounted, restart your PC, and see if the error reappears. If it does, maybe update GRUB or consult your BIOS settings. Let me know what you try next!
I can't directly access or display the contents of /etc/fstab in PopOS. However, you can view it yourself by running the appropriate command in your terminal. If you need help interpreting the file or converting partition labels to UUIDs, just let me know!
blkid will display the unique ID for each device. This method ensures identification remains stable even when disks change. Refer to fstab(5) for more details.
Here is the result I got form terminal. And the content for /boot/grub/grub.cfg. I will also attach the file itself. # # 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 ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi if [ "${initrdfail}" = 2 ]; then set initrdfail= elif [ "${initrdfail}" = 1 ]; then set next_entry="${prev_entry}" set prev_entry= save_env prev_entry if [ "${next_entry}" ]; then set initrdfail=2 fi fi if [ "${next_entry}" ] ; then set default="${next_entry}" set next_entry= save_env next_entry set boot_once=true else set default="0" fi if [ x"${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}" save_env saved_entry fi } function initrdfail { if [ -n "${have_grubenv}" ]; then if [ -n "${partuuid}" ]; then if [ -z "${initrdfail}" ]; then set initrdfail=1 if [ -n "${boot_once}" ]; then set prev_entry="${default}" save_env prev_entry fi fi save_env initrdfail fi; fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { if [ x$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$feature_default_font_path = xy ] ; then font=unicode else insmod part_gpt insmod ext2 set root='hd0,gpt5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt5 --hint-efi=hd0,gpt5 --hint-baremetal=ahci0,gpt5 1490d63d-2e87-4e62-999d-ae13ebe95db8 else search --no-floppy --fs-uuid --set=root 1490d63d-2e87-4e62-999d-ae13ebe95db8 fi font="/usr/share/grub/unicode.pf2" fi if loadfont $font ; then set gfxmode=1920x1080 load_video insmod gfxterm set locale_dir=$prefix/locale set lang=en_US insmod gettext fi terminal_output gfxterm insmod part_gpt insmod ext2 set root='hd0,gpt5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt5 --hint-efi=hd0,gpt5 --hint-baremetal=ahci0,gpt5 1490d63d-2e87-4e62-999d-ae13ebe95db8 else search --no-floppy --fs-uuid --set=root 1490d63d-2e87-4e62-999d-ae13ebe95db8 fi insmod gfxmenu loadfont ($root)/usr/share/grub/themes/CyberRe/dejavu_14.pf2 loadfont ($root)/usr/share/grub/themes/CyberRe/droidlogo_bold_17.pf2 loadfont ($root)/usr/share/grub/themes/CyberRe/droidlogo_bold_20.pf2 loadfont ($root)/usr/share/grub/themes/CyberRe/droidlogo_bold_26.pf2 loadfont ($root)/usr/share/grub/themes/CyberRe/droidlogo_regular_12.pf2 loadfont ($root)/usr/share/grub/themes/CyberRe/droidlogo_regular_17.pf2 insmod png set theme=($root)/usr/share/grub/themes/CyberRe/theme.txt export theme if [ "${recordfail}" = 1 ] ; then set timeout=30 else if [ x$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 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=cyan/blue set menu_color_highlight=white/blue ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### function gfxmode { set gfxpayload="${1}" if [ "${1}" = "keep" ]; then set vt_handoff=vt.handoff=7 else set vt_handoff= fi } if [ "${recordfail}" != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode menuentry 'Pop GNU/Linux' --class pop --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-1490d63d-2e87-4e62-999d-ae13ebe95db8' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt5 --hint-efi=hd0,gpt5 --hint-baremetal=ahci0,gpt5 1490d63d-2e87-4e62-999d-ae13ebe95db8 else search --no-floppy --fs-uuid --set=root 1490d63d-2e87-4e62-999d-ae13ebe95db8 fi linux /boot/vmlinuz-5.11.0-7614-generic root=UUID=1490d63d-2e87-4e62-999d-ae13ebe95db8 ro quiet splash $vt_handoff initrd /boot/initrd.img-5.11.0-7614-generic } submenu 'Advanced options for Pop GNU/Linux' $menuentry_id_option 'gnulinux-advanced-1490d63d-2e87-4e62-999d-ae13ebe95db8' { menuentry 'Pop GNU/Linux, with Linux 5.11.0-7614-generic' --class pop --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.11.0-7614-generic-advanced-1490d63d-2e87-4e62-999d-ae13ebe95db8' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt5 --hint-efi=hd0,gpt5 --hint-baremetal=ahci0,gpt5 1490d63d-2e87-4e62-999d-ae13ebe95db8 else search --no-floppy --fs-uuid --set=root 1490d63d-2e87-4e62-999d-ae13ebe95db8 fi echo 'Loading Linux 5.11.0-7614-generic ...' linux /boot/vmlinuz-5.11.0-7614-generic root=UUID=1490d63d-2e87-4e62-999d-ae13ebe95db8 ro quiet splash $vt_handoff echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-5.11.0-7614-generic } menuentry 'Pop GNU/Linux, with Linux 5.11.0-7614-generic (recovery mode)' --class pop --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.11.0-7614-generic-recovery-1490d63d-2e87-4e62-999d-ae13ebe95db8' { recordfail load_video insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 set root='hd0,gpt5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt5 --hint-efi=hd0,gpt5 --hint-baremetal=ahci0,gpt5 1490d63d-2e87-4e62-999d-ae13ebe95db8 else search --no-floppy --fs-uuid --set=root 1490d63d-2e87-4e62-999d-ae13ebe95db8 fi echo 'Loading Linux 5.11.0-7614-generic ...' linux /boot/vmlinuz-5.11.0-7614-generic root=UUID=1490d63d-2e87-4e62-999d-ae13ebe95db8 ro recovery nomodeset dis_ucode_ldr echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-5.11.0-7614-generic } } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/10_linux_zfs ### ### END /etc/grub.d/10_linux_zfs ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry 'Windows Boot Manager (on /dev/sdb1)' --class windows --class os $menuentry_id_option 'osprober-efi-FED8-19D0' { insmod part_gpt insmod fat set root='hd1,gpt1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd1,gpt1 --hint-efi=hd1,gpt1 --hint-baremetal=ahci1,gpt1 FED8-19D0 else search --no-floppy --fs-uuid --set=root FED8-19D0 fi chainloader /efi/Microsoft/Boot/bootmgfw.efi } set timeout_style=menu if [ "${timeout}" = 0 ]; then set timeout=10 fi ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/30_uefi-firmware ### menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' { fwsetup } ### 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 ### grub.cfg
The path should reflect the correct EFI installation location. Based on the grub.cfg, it's likely at /efi/Microsoft/Boot/bootmgfw.efi. Use that for your commands.
Checking the contents of your EFI directory, possibly /efi or /boot/efi in PopOS.
The EFI directory exists at /boot and its structure is organized as follows.