Removable disc drive cartridge with improved registration

A disc drive enclosure comprising:

• an outer surface enclosing a cavity;
• said cavity having a height, a width and a length dimension and being configured to surround a disc drive having a height, a width and a length dimension, each of said height, said width and said length dimension of said cavity being respectively greater than or equal to said height, said width and said length dimension of said disc drive;
• an opening within a front side of said outer surface that is configured to allow passage of electronic connectors protruding from a front side of said disc drive;
• and where said disc drive is mounted to one or more substantially rigid mounting and shock absorbing struts that are made from non-elastomeric material and that are configured for deflection in response to a shock applied to said outer surface.