Cannot find a GRUB drive for /dev/sda1

[Lightshot321]

Hey, so I’ve been updating my device and didnt connect it to a charger so it ran out of power of course. i was then trying to follow a guide (here in the Forum from Aragorn, here’s the link: [HowTo] Recovering from an interrupted update/upgrade) to fix the damage. I made a bootable USB and got to the desktop. Here’s where the Problem starts:

sudo su -                                                        ✔ 
[manjaro-gnome ~]# lsblk --fs
NAME        FSTYPE   FSVER            LABEL              UUID                                 FSAVAIL FSUSE% MOUNTPOINTS
loop0       squashfs 4.0                                                                            0   100% /run/miso/sfs/livefs
loop1       squashfs 4.0                                                                            0   100% /run/miso/sfs/mhwdfs
loop2       squashfs 4.0                                                                            0   100% /run/miso/sfs/desktopfs
loop3       squashfs 4.0                                                                            0   100% /run/miso/sfs/rootfs
sda         iso9660  Joliet Extension MANJARO_GNOME_2604 2026-03-27-22-40-38-00                     0   100% /run/miso/bootmnt
├─sda1      iso9660  Joliet Extension MANJARO_GNOME_2604 2026-03-27-22-40-38-00                              
└─sda2      vfat     FAT12            MISO_EFI           345D-D0ED                                           
nvme0n1                                                                                                      
├─nvme0n1p1 vfat     FAT32                               A23D-F494                                           
└─nvme0n1p2 ext4     1.0                                 19bc98ff-66a6-435a-a5d8-68932eb8ebf1                
[manjaro-gnome ~]# manjaro-chroot -a
grub-probe: error: cannot find a GRUB drive for /dev/sda1.  Check your device.map.
grub-probe: error: cannot find a GRUB drive for /dev/sda1.  Check your device.map.
==> Mounting (ManjaroLinux) [/dev/nvme0n1p2]
 --> mount: [/mnt]
 --> mount: [/mnt/boot/efi]
[manjaro-gnome /]# sudo fdisk -l /dev/sda
Disk /dev/sda: 14.45 GiB, 15518924800 bytes, 30310400 sectors
Disk model: Rainbow Line    
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/sda1  *          64 10769951 10769888  5.1G  0 Empty
/dev/sda2       10769952 10778143     8192    4M ef EFI (FAT-12/16/32)

As you can see, it cant find a grub drive. i then looked for a solution to that and only found to look at the fdisk and change the type to Linux. <

As i am still very new to Manjaro and Linux in general, this is where my knowledge ends.
Can you help me? thank you very much <3

[dmt]

Please ignore the “error”, /dev/sda is your live USB, just continue with the guide.

Your system is on the nvme and the first partition is the EFI partition which is where grub goes.

[Teo]

But…sda is the usb…you don’t need it anyways. The main nvme hard disk seems to mount correctly.
Just go to the next steps in the tutorial (pacman -Syu and so on).