If you want the field editable on the first page, then you need to make a field on the other pages with a different name from the page 1 field but the same for all other pages and make the second form field read only. You can then create a custom JavaScript to use the value of the first field to set the value of the second field's value.
Since Acrobat/Reader for Windows and MacIntosh all use the save Acrobat JavaScript there should be no issues as long as the code is contained within the PDF.
The above applies to Acrobat forms and not LiveCycle (XML forms) forms.