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Disk volume serial number is automatically generated and assigned when you format a disk partition and there is no documented way to change it without reformatting the disk volume. The format of volume serial number is: XXXX-XXXX (X maybe 0-9, A-F).
Determining the Age of a Canon Lens Using Serial Numbers and Date Codes How old is your Canon lens? With either the lens' serial number or date code, that question can be answered.
Canon has been transitioning to a 10-digit lens serial number (starting in 2008 with the ) and ending the inclusion of a separate manufacturing date code. While date codes and the shorter serial number are still found on some lenses, this inclusion will likely end completely.
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We loved the date code because it made aging a lens easy. However, now we can age a lens based on the serial number alone. For information on determining the age of a pre-10-digit serial number lens, see the section on interpreting the old date code below. Determine the age of a Canon lens based on the 10-digit serial number To age a Canon lens using the 10-digital serial number, we dissect the serial number as follows: DD C SSSSSSS The DD is the key to the date the lens was manufactured - the production date code. The Canon lens date code chart is shown below.