did you run again the mkinit command after you reinstalled it the second time?
post also:
blkid
cat /etc/fstab/
I think this is your issue - the partition is flagged as legacy_boot - if you load up cgdisk for /dev/sdc you will find the partition type guid to be ef02 - where it should be ef00
Ah, I see. How exactly do I remove this flag ?
so I did sudo cgdisk /dev/sdc and selected the ESP partition, it says Current type is ef00.
Delete the partition and recreate it.
The rerun the commands to install grub efi as described earlier.
Yes, I did, but no change.
blkid
/dev/loop1: TYPE="squashfs"
/dev/sdd1: BLOCK_SIZE="512" UUID="0E8A16C30E8A16C3" TYPE="ntfs" PARTUUID="0e8a03b4-01"
/dev/sdb2: UUID="e4819263-1437-47cb-8afa-8e9230eb7a8d" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="ba2cac38-02"
/dev/sdb3: UUID="6697a587-6eda-4f18-88a9-1ba83fc20b33" TYPE="swap" PARTUUID="ba2cac38-03"
/dev/sdb1: LABEL="Hauptplatte" BLOCK_SIZE="512" UUID="01D3C542C44B29D0" TYPE="ntfs" PARTUUID="ba2cac38-01"
/dev/loop2: TYPE="squashfs"
/dev/loop0: TYPE="squashfs"
/dev/mapper/ventoy: BLOCK_SIZE="2048" UUID="2022-07-21-09-20-14-00" LABEL="MANJARO_KDE_2135" TYPE="iso9660" PTTYPE="dos"
/dev/sde2: SEC_TYPE="msdos" LABEL_FATBOOT="VTOYEFI" LABEL="VTOYEFI" UUID="66F6-D57E" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="b7bffb6a-02"
/dev/sde1: LABEL="Ventoy" UUID="F508-B40B" BLOCK_SIZE="512" TYPE="exfat" PTTYPE="dos" PARTUUID="b7bffb6a-01"
/dev/sdc2: UUID="911149de-2563-4198-89df-8d3832fd2b05" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="1e53093d-1d33-a64b-837a-c72603987844"
/dev/sdc3: UUID="63b20c95-fc92-475f-b8b6-18fa6880d5c8" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="08f1477f-c672-0246-b5b5-d6cbcd45c36d"
/dev/sdc1: UUID="3A10-AD17" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="3350d68a-a33f-3e4b-9eb9-4d75647015d7"
/dev/sda4: BLOCK_SIZE="512" UUID="721437E81437AE4B" TYPE="ntfs" PARTUUID="20f5f276-d59d-4910-906d-fad4d7c5aabe"
/dev/sda3: BLOCK_SIZE="512" UUID="18D45014D44FF314" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="fc0e68ba-83fe-489c-8b07-c56d9ed0b20c"
/dev/sda1: UUID="4C3C-6793" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="369bdc03-e19a-4890-8630-e7a6a68e696e"
/dev/loop3: TYPE="squashfs"
/dev/sda2: PARTLABEL="Microsoft reserved partition" PARTUUID="43879069-e29b-4733-b2e0-05e9fa8844c5"
cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a device; this may
# be used with UUID= as a more robust way to name devices that works even if
# disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
UUID=6697a587-6eda-4f18-88a9-1ba83fc20b33 swap swap defaults,noatime 0 2
UUID=911149de-2563-4198-89df-8d3832fd2b05 /home ext4 defaults,noatime 0 2
UUID=63b20c95-fc92-475f-b8b6-18fa6880d5c8 / ext4 defaults,noatime 0 1
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
UUID=3350D68A-A33F-3E4B-9EB9-4D75647015D7 /boot/efi vfat defaults,noatime 0 2
The reference in fstab should be using the UUID not PARTUUID
I think you have tried so many things you are running in circles trying to fix the fix you applied trying to fix …
Your best bet is to zap the sdc device - then start over - because you are having weird partitions flags - your system thinks it’s a raid device and want to use mdraid
This command removes all traces of signatures and backup partition blocks and what not.
sudo sgdisk --zap-all /dev/sdc
This command will fill the first gigabyte of the device with null
sudo dd if=/dev/null of=/dev/sdc bs=10M count=1000 status=progress
Then you can launch the installer and get a clean install to your sdc device
1 Like
Omg, this real did the trick. Thank you @all for your help !
Ah yes, that sounds like something I would do 
I will do this when I have some spare time, since if I understand correctly I need to reinstall everything again. Right now I need the system back.
Still thank you for your help 
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