So here is a summary for the archives and whomever else might follow such things :-) I actually have two tape sets, one is a four cartridge set with the following tapes in it: 1 AQ-JP22H-BE VMS V5.5 BIN TK50 1/2 Copyright 1991 Digital Equipment Corp 2 AQ-LC99D-BE VMS V5.5 BIN TK50 2/2 Copyright 1991 Digital Equipment Corp 3 AQ-NH24D-BE VMS V5.5 BIN TK50 MUP MANDATORY UPDATE Copyright 1991 Digital Equipment Corp 4 AQ-PQWLO-BE VMS V5.5-2 BIN TK50 1/1 Copyright 1992 Digital Equipment Corp The second has only two tapes in it: 1 AQ-PRAKO-O1 VMS V5.5-2 REMASTERED TK50 1/2 = VMS ONLY Copyright 1992 Digital Equipment Corp 2 AQ-PRALO-O1 VMS V5.5-2 REMASTERED TK50 2/2 = S/A BAKUP & DECWINDOWS Copyright 1991 Digital Equipment Corp The good news is that I've successfully installed VMS 5.5-2 with both sets of tapes. For those of you who have either of these tapes ... Boot the tape marked 2/2 and it will boot into standalone backup. Then for the 5.5 tapes type: BACKUP/VERIFY MUA0:VMS055.B/SAVE_SET DUA0: for the 5.5-2 tape type: BACKUP/VERIFY MUA0:VMS2055.B/SAVE_SET DUA0: Then reboot after it installs and follow the prompts. --Chuck