Hi everybody, I am trying to encrypt an external hard drive on Ubuntu 14.04 following this guide [1]. I have previously ran badblocks, which returned zero errors; I am also sure the disk is not mounted: $ findmnt /dev/sdb $ findmnt /dev/sdb1 $ Whenever I try the initialisation with cryptsetup I get this same error: $ sudo cryptsetup -y -v luksFormat /dev/sdb1 WARNING! ======== This will overwrite data on /dev/sdb1 irrevocably. Are you sure? (Type uppercase yes): YES Enter passphrase: Verify passphrase: Cannot wipe header on device /dev/sdb1. Command failed with code 5: Cannot wipe header on device /dev/sdb1. dmesg is not reporting anything out of the ordinary: $ dmesg [ 3208.032228] usb 2-1.4: new high-speed USB device number 7 using ehci-pci [ 3208.140990] usb 2-1.4: New USB device found, idVendor=059f, idProduct=0651 [ 3208.141001] usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 3208.141024] usb 2-1.4: Product: LaCie Hard Drive USB [ 3208.141031] usb 2-1.4: Manufacturer: LaCie [ 3208.141037] usb 2-1.4: SerialNumber: 10000E000BD8A671 [ 3208.177576] usb-storage 2-1.4:1.0: USB Mass Storage device detected [ 3208.178112] scsi4 : usb-storage 2-1.4:1.0 [ 3208.178183] usbcore: registered new interface driver usb-storage [ 3209.176917] scsi 4:0:0:0: Direct-Access SEAGATE ST3160812A 3.AA PQ: 0 ANSI: 2 [ 3209.177561] sd 4:0:0:0: Attached scsi generic sg2 type 0 [ 3209.181342] sd 4:0:0:0: [sdb] 312581808 512-byte logical blocks: (160 GB/149 GiB) [ 3209.182337] sd 4:0:0:0: [sdb] Write Protect is off [ 3209.182348] sd 4:0:0:0: [sdb] Mode Sense: 53 00 00 08 [ 3209.183339] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 3209.201618] sdb: sdb1 [ 3209.229465] sd 4:0:0:0: [sdb] Attached SCSI disk In the log a strange message is reporting something with block 0: $ tail /var/log/syslog Dec 8 09:18:20 MekanikDestruktiwKommandoh kernel: [ 3698.016311] end_request: critical target error, dev sdb, sector 0 Dec 8 09:18:28 MekanikDestruktiwKommandoh wpa_supplicant[1188]: wlan0: CTRL-EVENT-SCAN-STARTED Any ideas on what may be going wrong here? Thank you, Luís [1] http://www.cyberciti.biz/hardware/howto-linux-hard-disk-encryption-with-luks-cryptsetup-command/ _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
