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I have a Seagate portable hdd 1 TB formatted fat32. Now I had no problems at the very beginning, but now I am getting the following error:

Error mounting /dev/sdb1 at /media/zorobabel/EFI: 
Command-line `mount -t "vfat" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,
shortname=mixed,dmask=0077,utf8=1,showexec,flush" "/dev/sdb1" "/media/zorobabel/EFI"' exited with non-zero exit status 32: 
mount: /dev/sdb1: can't read superblock
(udisks-error-quark, 0)

Same on ext4, and ext3 on 2 computers. Same on Windows.

Disks application displays: Partition Type: EFI System Contents: FAT32

REEDITED

Mounting:

$ sudo mount /dev/sdb1 seagate
mount: /dev/sdb1: can't read superblock

Therefore I no longer can access the data to backup, nor to format it.

$ sudo fdisk -l


    Disk /dev/sdb: 1000.2 GB, 1000204885504 bytes
    255 heads, 63 sectors/track, 121601 cylinders, total 1953525167 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x99bd9cd1

       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb1               1  1953525166   976762583   ee  GPT
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sudo fdisk -l? –  Braiam Jan 29 at 20:49
    
I edited my answer. It looks like is visible /sda2. It cannot be mounted. –  jazio Feb 12 at 21:23
    
I don't see any sdb disk. BTW your mount command will fail since you should use mount /dev/deviceid /mountpoint you are doing it backwards. BTW, didn't you used sudo fdisk -l? with sudo? –  Braiam Feb 12 at 21:47
    
@Braiam sorry I did: $ sudo mount /dev/sdb1 seagate mount: /dev/sdb1: can't read superblock, where sdb1 is indeed visible at fdisk -l –  jazio Feb 13 at 19:20
    
Please edit your question and add the information. –  Braiam Feb 13 at 19:22

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