[Bug 1245255] Re: IO-Error when trying to change the master password of a self encrypting ssd

[Seth Arnold]

I'm sorry, I don't know the details of the ATA locking mechanism. (I've
been content to simply rely upon my BIOS.)

I would personally not try to change the password while a filesystem on
the drive is mounted, though I cannot articulate why I would worry about
it. If you can umount the filesystem, I would expect that to be
sufficient to allow you to change the password. Probably the drive must
be unlocked to change the password, that would simplify the design of
the drive firmware.

I'm curious, if you learn more, please do report back. :)

Thanks

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Title:
  IO-Error when trying to change the master password of a self
  encrypting ssd

Status in “hdparm” package in Ubuntu:
  Incomplete

Bug description:
   I tried to set the master password on my self encrypting Samsung SSD
  840 Pro in a Dell Latitude 6400 ATG laptop (Bios Version: A34), german
  keyboard via

  sudo hdparm --user-master m --security-set-pass "$( printf
  'testmasterpassword' | tr '1234567890qwertzuiopasdfghjklyxcvbnm'
  '\2-\11\20\21\26\27\30\31\40-\45\60-\70\104-\107\110\111\120')"
  /dev/sda

  this gives me the following error:

  security_password=" 1 P01 %011$2" /dev/sda: Issuing SECURITY_SET_PASS
  command, password=" 1 P01 %011$2", user=master, mode=high
  SECURITY_SET_PASS: Input/output error

  Any idea, whats wrong here? Is there a workaround?

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: hdparm 9.43-1ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  Date: Sun Oct 27 20:03:33 2013
  InstallationDate: Installed on 2013-10-03 (24 days ago)
  InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  MarkForUpload: True
  SourcePackage: hdparm
  UpgradeStatus: No upgrade log present (probably fresh install)

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