I'm having the same sfc /scannow issues as well.. MY windows xp cd is sp2 AND I have downloaded and installed sp3 ...
I have changed the source path to C: but it still can't find .. says to install or insert the CD disc with sp3 .. but my sp3 is probably within i386 ..
Ideas for me ?
Windows 10 Home 64 Intel® Core™ i5-8265U (1.6 GHz base frequency, up to 3.9 GHz, 6 MB cache, 4 cores)
17.3" diagonal HD+ SVA BrightView WLED-backlit (1600 x 900) 256 GB - 5400 rpm SATA
Windows 10 //21H1 (OS Build 19044..2251) 64bit //Google Chrome 118.0.5993.89 (Official Build) (64-bit)/ 16GB Memory/ AMD Radeon HD 7700 series Video Card//N68C-GS FX2.00 gigahertz AMD Athlon 64 X2 Dual Core /[/B]