Pour info, le message d'erreur dans Dolphin est le suivant
An error occurred while accessing 'Média amovible de 931,5 Gio', the system responded: The requested operation has failed: Error mounting /dev/sdb1 at /run/media/Niphredil/0C88F2753FC5EFAB: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=500,gid=500,dmask=0077,fmask=0177" "/dev/sdb1" "/run/media/Niphredil/0C88F2753FC5EFAB"' exited with non-zero exit status 13: $MFTMirr does not match $MFT (record 0).
Failed to mount '/dev/sdb1': Erreur d'entrée/sortie
NTFS is either inconsistent, or there is a hardware fault, or it's a
SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
then reboot into Windows twice. The usage of the /f parameter is very
important! If the device is a SoftRAID/FakeRAID then first activate
it and mount a different device under the /dev/mapper/ directory, (e.g.
/dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
for more details.