Hello, i have a trouble with booting my system after updating.
error: /@/boot/vmlinuz-5.10-x86_64’ not found,
error: you need to load the kernel first.
When i try to use chroot on the live iso:
grub-probe: error: cannot find a GRUB drive for /dev/sdc1. Check your device.map.
grub-probe: error: cannot find a GRUB drive for /dev/sdc1. Check your device.map.
==> ERROR: No Linux partitions detected!
Help me pls 
Hi @say8hi, and welcome!
From the live ISO, please provide the output of:
sudo lsblk
and
sudo fdisk -l
Ok
sudo lsblk:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 71.3M 1 loop /run/miso/sfs/livefs
loop1 7:1 0 877.9M 1 loop /run/miso/sfs/mhwdfs
loop2 7:2 0 1.8G 1 loop /run/miso/sfs/desktopfs
loop3 7:3 0 770.9M 1 loop /run/miso/sfs/rootfs
sda 8:0 0 232.9G 0 disk
├─sda1 8:1 0 100M 0 part /mnt
├─sda2 8:2 0 16M 0 part
├─sda3 8:3 0 150.3G 0 part
├─sda4 8:4 0 520M 0 part
├─sda5 8:5 0 8G 0 part
└─sda6 8:6 0 65G 0 part /run/media/manjaro/0dc34ae4-3bca-4c22-940a-41672b8b6d78
sdb 8:16 0 931.5G 0 disk
├─sdb1 8:17 0 128M 0 part
├─sdb2 8:18 0 491.3G 0 part
└─sdb3 8:19 0 418.3G 0 part
sdc 8:32 1 28.9G 0 disk /run/miso/bootmnt
├─sdc1 8:33 1 3.6G 0 part
└─sdc2 8:34 1 4M 0 part
sudo fdisk -l:
Disk /dev/sda: 232.89 GiB, 250059350016 bytes, 488397168 sectors
Disk model: WDC WDS250G2B0A
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 356896D9-3355-4BD2-830B-34426A392D7E
Device Start End Sectors Size Type
/dev/sda1 2048 206847 204800 100M EFI System
/dev/sda2 206848 239615 32768 16M Microsoft reserved
/dev/sda3 239616 315346943 315107328 150.3G Microsoft basic data
/dev/sda4 315346944 316411903 1064960 520M Windows recovery environment
/dev/sda5 452726784 469503999 16777216 8G Linux swap
/dev/sda6 316411904 452726783 136314880 65G Linux filesystem
Partition table entries are not in disk order.
Disk /dev/sdb: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: ST1000DL002-9TT1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: CE29F822-E4F5-11EA-9FC1-18C04D28920F
Device Start End Sectors Size Type
/dev/sdb1 2048 264191 262144 128M Microsoft reserved
/dev/sdb2 264192 1030522879 1030258688 491.3G Linux filesystem
/dev/sdb3 1030522880 1907795967 877273088 418.3G Microsoft basic data
Disk /dev/loop0: 71.34 MiB, 74805248 bytes, 146104 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop1: 877.87 MiB, 920514560 bytes, 1797880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop2: 1.81 GiB, 1940754432 bytes, 3790536 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop3: 770.86 MiB, 808308736 bytes, 1578728 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdc: 28.9 GiB, 31029460992 bytes, 60604416 sectors
Disk model: DataTraveler 3.0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
/dev/sdc1 * 64 7469523 7469460 3.6G 0 Empty
/dev/sdc2 7469524 7477715 8192 4M ef EFI (FAT-12/16/32)
How? What command?
We generally use the automagic tool:
manjaro-chroot -a
Yeah, i used it:
~ sudo manjaro-chroot -a ✔
grub-probe: error: cannot find a GRUB drive for /dev/sdc1. Check your device.map.
grub-probe: error: cannot find a GRUB drive for /dev/sdc1. Check your device.map.
==> ERROR: No Linux partitions detected!
It seems to me, that perhaps there is a hard drive missing from the listing. Or something. Because something doesn’t quite look right to me.
Do you have just the two hard drives in your computer?
Basically, that error, from the subject, looks like a Btrfs path to me, and I don’t see any Btrfs file systems…
I have 1 SSD that contains Manjaro and Windows 10, and i have 1 HDD for games, pictures and videos.
And i’m using btrfs for manjaro
That’s what I figured.
But, unfortunately I know nothing of Btrfs so won’t be able to help you further.
However, please see [HowTo] Provide System Information and, if applicable, [HowTo] post screenshots and links.
You may take a look here:
https://wiki.manjaro.org/index.php?title=GRUB/Restore_the_GRUB_Bootloader#Manual_chroot
Whether or not you actually need to ‘restore grub’ … that guide should help you manually chroot.
Oh, i’ve tried it, but had this error:
mount: /mnt: special device /dev/sdyC does not exist.
Ok, thank you for your try
Well its true that it does not.
The wiki shows examples … it is not meant to be simply copied.
According to your output I think your linux filesystem is sda6 … and since you are using btrfs you need an extra flag as shown in the wiki …
su -
mount -o subvol=@ /dev/sda6 /mnt
Oh, it works, and then i need to do the same with boot and efi:
mount -o subvol=@ /dev/sda6 /mnt/boot
and
mount -o subvol=@ /dev/sda6 /mnt/boot/efi
Like this?
Not quite.
Again, it is applicable to the variables of your system makeup…
(again from root, within su, as above)
mount -o subvol=@ /dev/sda1 /mnt/boot/efi
That should be it … you can exit root (su) with command exit.
(the same for exiting chroot when you are finished)
Now you should be able to do what needs to be done - double check your updates and packages and all that.
Ok, i’ll try it, thank you very much!
Cheers.
PS - One of my first steps would probably be going to look in /var/log/pacman.log for any clues.
Meh … heres a one-liner for the last 2 days of transactions:
lnglastx=$(tail -n1 /var/log/pacman.log | awk '{print $1}'); lastx=${lnglastx:1:10}; lastlastx=$(grep -B1 "$lastx" /var/log/pacman.log | head -n1 -c11 | cut -c 2-); printf '\n\nWhat you did the time before:\n\n'; grep -n "$lastlastx" /var/log/pacman.log; printf '\n\nWhat you did last time:\n\n'; grep -n "$lastx" /var/log/pacman.log; printf '\n'