If it's all working for what you need/want it for, I think you're good to go.  You can always keep the cab file and 7zip if anything changes. Glad you got it working.  : )
Thank you for valuable previous information! Actual installation; I apologize for complicating actual installation of XP Pro Dell Reinstallation Disc: Step OneBoot up machine Tapping F6 key and move 'Cab Contents' (from Flash Drive) to documents folder 'Program Files (x86)'  Yes? [IMAGE] Step TwoBoot Down Step ThreeBIOS adjustment to 'ATAPI' should be done before loading XP Reinstallation Disc. When/where do you select SATA operation in Bios set to ATAPI not RAID? What to do? Step FourBoot Down Step FiveBoot back up: Insert Dell Reinstallation Disc [IMAGE] Step SixBoot Down Step SevenBoot back up Tapping F2 key at the Dell logo screen to enter System Setup or BIOS. On the left pane, click 'Boot Sequence' to CD/DVD Drive then click Apply. ... Step Eight:Boot Down Step NineBoot back up: Sequence should ask to boot off 'Reinstallation Disc' CD/DVD Drive. However if you choose to 'Delete' or 'Erase' 'C' Partition then you'll loose the Cab Contents .... What to do? (so sorry for complication) Thank You for your patience..!.  
Formatting Dell Optiplex 980 Desktop to Dell Windows XP Pro Reinstallation Disc