DiskSorter licenses and discounted license packs may be purchased on the following page:

http://www.disksorter.com/purchase.html

After finishing the purchase process, wait for the following two e-mail messages: the first one with a receipt for your payment and the second one with an unlock key. If you will not receive your unlock key within 24 hours, please check your spam box for e-mail messages originating from support@flexense.com and if it is nor here contact our support team:

After you will receive your unlock key, start the DiskSorter GUI application and press the 'Register' button located in the top-right corner of the window.

On the register dialog, enter your name and the received unlock key and press the 'Register' button to finish the registration procedure.

If the computer is not connected to the Internet, press the 'Manual Registration' button and follow the displayed manual product registration instructions.