update :
le disque a remarché comme pas magie mais pour pas longtemps pas eu le temps de tout copié :
[11627.829851] usb 2-1.1: reset high speed USB device using ehci_hcd and address 42
[11638.014218] usb 2-1.1: reset high speed USB device using ehci_hcd and address 42
[11674.843870] usb 2-1.1: reset high speed USB device using ehci_hcd and address 42
[11674.933820] usb 2-1.1: device descriptor read/64, error -71
[11675.133671] usb 2-1.1: device descriptor read/64, error -71
[11675.323593] usb 2-1.1: reset high speed USB device using ehci_hcd and address 42
[11675.413364] usb 2-1.1: device descriptor read/64, error -71
[11675.613449] usb 2-1.1: device descriptor read/64, error -71
[11675.803338] usb 2-1.1: reset high speed USB device using ehci_hcd and address 42
[11676.222815] usb 2-1.1: device not accepting address 42, error -71
[11676.303048] usb 2-1.1: reset high speed USB device using ehci_hcd and address 42
[11676.722576] usb 2-1.1: device not accepting address 42, error -71
[11676.723249] sd 17:0:0:0: Device offlined - not ready after error recovery
[11676.723268] sd 17:0:0:0: [sdb] Unhandled error code
[11676.723271] sd 17:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
[11676.723275] sd 17:0:0:0: [sdb] CDB: Read(10): 28 00 1b d7 79 cb 00 00 60 00
[11676.723285] end_request: I/O error, dev sdb, sector 467106251
[11676.723290] quiet_error: 24 callbacks suppressed
[11676.723293] Buffer I/O error on device sdb7, logical block 787216
[11676.723298] Buffer I/O error on device sdb7, logical block 787217
[11676.723302] Buffer I/O error on device sdb7, logical block 787218
[11676.723305] Buffer I/O error on device sdb7, logical block 787219
[11676.723308] Buffer I/O error on device sdb7, logical block 787220
[11676.723311] Buffer I/O error on device sdb7, logical block 787221
[11676.723314] Buffer I/O error on device sdb7, logical block 787222
[11676.723317] Buffer I/O error on device sdb7, logical block 787223
[11676.723320] Buffer I/O error on device sdb7, logical block 787224
[11676.723385] Buffer I/O error on device sdb7, logical block 787225
[11676.723406] sd 17:0:0:0: rejecting I/O to offline device
[11676.723417] sd 17:0:0:0: rejecting I/O to offline device
[11676.723446] sd 17:0:0:0: rejecting I/O to offline device
[11676.723486] usb 2-1.1: USB disconnect, address 42
[11676.723490] sd 17:0:0:0: [sdb] Unhandled error code
[11676.723493] sd 17:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[11676.723498] sd 17:0:0:0: [sdb] CDB: Read(10): 28 00 1b cf da c3 00 00 f0 00
[11676.723511] end_request: I/O error, dev sdb, sector 466606787
[11676.922654] usb 2-1.1: new high speed USB device using ehci_hcd and address 43
[11677.012569] usb 2-1.1: device descriptor read/64, error -71
[11677.212563] usb 2-1.1: device descriptor read/64, error -71
[11677.402484] usb 2-1.1: new high speed USB device using ehci_hcd and address 44
[11677.492434] usb 2-1.1: device descriptor read/64, error -71
[11677.692299] usb 2-1.1: device descriptor read/64, error -71
[11677.882211] usb 2-1.1: new high speed USB device using ehci_hcd and address 45
[11678.301734] usb 2-1.1: device not accepting address 45, error -71
[11678.381904] usb 2-1.1: new high speed USB device using ehci_hcd and address 46
[11678.801487] usb 2-1.1: device not accepting address 46, error -71
[11678.801848] hub 2-1:1.0: unable to enumerate USB device on port 1
est ce qu’il y a un moyen de copier “lentement” ou autre pour ne pas trop le fatigué et limité les erreurs ?