Can't boot into manjaro after fresh installation. GRUB issues

Hi there! So, I had arch installed in a partition which now is erased in order to install Manjaro…
after installing Manjaro there, i’m not able to boot into it. Like the installation missed this crucial part, although I did select the EFI partition correctly. On bios, i know I have the option to boot GRUB, but once I do that, I just see my old systems there. Any thoughts on how to solve it?

just some context to you:
sudo parted -l
Model: ATA ST500DM002-1BD14 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 473MB 472MB ntfs Basic data partition hidden, diag
2 578MB 595MB 16.8MB Microsoft reserved partition msftres
3 595MB 500GB 499GB ntfs Basic data partition msftdata
4 500GB 500GB 211MB fat32 EFI system partition boot, esp

Model: USB DISK 2.0 (scsi)
Disk /dev/sdb: 7751MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 7750MB 7749MB ntfs Main Data Partition msftdata
2 7750MB 7751MB 1049kB UEFI:NTFS msftdata

Model: USB DISK 2.0 (scsi)
Disk /dev/sdc: 7748MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
2 3794MB 3798MB 4194kB primary esp

Model: WDS500G3X0C-00SJG0 (nvme)
Disk /dev/nvme0n1: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 17.8MB 16.8MB Microsoft reserved partition msftres
2 17.8MB 394GB 394GB ntfs Basic data partition msftdata
3 394GB 500GB 106GB ext4

When I chroot on liveCD, using “manjaro-chroot -a” I also got this message:
grub-probe: error: cannot find a GRUB drive for /dev/sdc1. Check your device.map.

Shouldn’t you search it on /dev/nvme0n13 ?

makes sense. But how do I do that?

I don’t know the available options. Check its manual.
:person_shrugging:

check UUID under chroot with /etc/fstab on your disk
see this Grub bootloader broken - #4 by stephane

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