How about:
xcopy /e c:usersownerpictures*.* f:pictures*.*
The “/e” switch copies empty directories. Are you sure this is what you want and not “/s” which only copies subdirectories that have files?
With any dos command you can add “/?” to get syntax help.
If it scrolls off the screen, use the “|more” pipe, e.g.
xcopy/? |more
this will prevent the screen from scrolling until you hit a key.
An old trick from 20 or more years ago to copy all files when your copy media can’t hold everything at once is:
1) Use the “attrib” command to turn on the archive attribute for all files in the directory structure:
attrib +a pictures*.*/s
2) xcopy everything and turn off the attrib flag as it’s copied:
xcopy pictures*.* r:pictures*.*/m (“/m” is for “modify”)
This way, once your “copy to” media is filled, the xcopy command will pick up from where it left off by starting with the first file that still has its archive flag set.
Alternately, if you have the Windows disk, you can probably modify the BIOS to boot from the optical drive, and then perform the operations from within Windows.