Using Truecrypt on RHEL 6.3 fails with volumes > 2 TB when kernel crypt enabled

Solution Verified - Updated -

Issue

  • When trying to use Truecrypt with kernel cryptographic services, volume creation fails with the following error.

    Error: Kernel cryptographic service test failed. The cryptographic service of your kernel most likely does not support volumes larger than 2 TB.

    Possible solutions:

    • Upgrade the Linux kernel to version 2.6.33 or later.
    • Disable use of the kernel cryptographic services (Settings > Preferences > System Integration) or use 'nokernelcrypto' mount option on the command line.

Environment

  • Red Hat Enterprise Linux 6
  • Truecrypt, an unsupported 3rd-party package

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