Archlabs does not start on h.d. external w.d. 2 Tera

hi boys
I have been trying to install archlabs on h.d. for two days external from 2 ter, but the boot does not appear on the laptop, does anyone know why?
The installation is all correct and there are both fat and .ext4 partitions.

This is the first time this has happened to me in 15 years.
Thank for help

sdc      8:32   0   1,8T  0 disk 
├─sdc1   8:33   0   512M  0 part 
└─sdc2   8:34   0   1,8T  0 part 
sr0     11:0    1  1024M  0 rom  
Modello: WD Elements 2621 (scsi)
Disco /dev/sdc: 2000GB
Dimensione del settore (logica/fisica): 512B/512B
Tabella delle partizioni: gpt
Flag del disco: 

Numero  Inizio  Fine    Dimensione  File system  Nome      Flag
 1      1049kB  538MB   537MB       fat32        ESP       avvio, esp
 2      538MB   2000GB  2000GB      ext4         ArchLabs


I have disabled secure boot in the bios, do I need to enable it?

Yet with other hard disks they work with secure boot disabled, and with gpt partitions, they are only smaller in size, I can’t understand where the problem is

You installed the system on an external drive?

https://wiki.archlinux.org/title/Install_Arch_Linux_on_a_removable_medium

What is your boot order in your bios? Are you selecting this drive at boot or have it to boot first?

With this external hard drive there is no booting.
When I press f9 it should boot systemd-boot but it is not there.

last night i got the new seagate from 1 T, i installed in gpt-uefi and everything w
ent smoothly.

And that hard drive problem and it’s 6 months old.

I realized that there was something strange, when I did the clone with gparted of the fat32 / boot and / root of any distro both arch linux and archlabs, when I booted from that hard disk the boot did not appear.

In your opinion, it is possible that the problem lies in the size of the sector.
I say this because the seagate has this dimension:

Modello: Seagate Expansion (scsi)
Disco /dev/sdb: 1000GB
Sector size (logical / physical): 512B/4096B
Tabella delle partizioni: gpt
Flag del disco: 

Numero  Inizio  Fine    Dimensione  File system  Nome  Flag
 1      1049kB  636MB   635MB       fat32              avvio, esp
 2      636MB   26,6GB  26,0GB      ext4
 3      26,6GB  27,5GB  918MB       fat32              avvio, esp
 4      27,5GB  44,9GB  17,3GB      ext4



while the 2 T w.d has this:

Sector size (logical / physical): 512B/512B