e2fsck don't know that there are severals super blocks.

[Bougron]

Hello
When i execute this command,

sudo e2fsck -fn /dev/sda1

The result is

e2fsck 1.42.13 (17-May-2015)
e2fsck: La tentative de lecture d'un bloc depuis le système de fichiers a produit une lecture tronquée lors de la tentative d'ouverture de /dev/sda1
Peut-être cette partition est-elle de taille zéro ?
( Attempting to read a block from the file system caused a truncated read when attempting to open / dev / sda1
Maybe this partition is zero size? )

I did not know what to do. But a very competent person told me to make this order.
sudo mount -r -t ext4 -o sb=$((32768*4)) /dev/disk/by-id/ata-MAXTOR_STM3160215A_9RA8V0BK-part1 /mnt

This solved the problem

Why e2fsck did not think to do this:
having been unable to read the first super-block to think of automatically accessing the next super-block and using it for repair, and so on.

it is only that the last super-block does not solve the problem that it should tell me that the repair is not possible.

In information, he could tell me he had to loop N times before finding a good super block and advise me to have the condition of the disk checked.

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Probably the same error in the MOUNT command?

Thanks