Ink supplies and methods to prepare an ink supply are disclosed. An example ink supply for a printer includes an ink chamber within a housing of the ink supply. The housing is removably installable within the printer. The ink chamber is to store ink. The ink supply further includes a machine readable storage medium to store a first priming parameter. The machine readable storage medium is carried by the housing of the ink supply. The first priming parameter has a value to cause the printer to configure a first priming procedure of the printer. The first priming parameter has precedence in configuring the first priming procedure over a first corresponding priming parameter stored in a second machine readable storage medium of a second ink supply installed in the printer.