The freespace rquired to install Windows 2000 SP4 on Windows 2000 Professional is:

                                          From a Distribution Share     From the CD-ROM or Microsoft Web Site                              With the Archive option                       280 MB                                      340 MB                              Without the Archive option                    105 MB                                      165 MB

The freespace rquired to install Windows 2000 SP4 on a Windows 2000 Server Product

                                          From a Distribution Share     From the CD-ROM or Microsoft Web Site                              With the Archive option                       320 MB                                      410 MB                              Without the Archive option                    105 MB                                      190 MB
NOTE: See 260910 How to Obtain the Latest Windows 2000 Service Pack.