Not without reinstalling the OS, no -- and though there is a conversion utility, it's better to do a complete reinstall (or at least have a full system backup before trying to convert the drive). The conversion utility information is here (once you've made and verified a backup before trying). [URL]
as asked in title - is it OK to simply reconfigure bios from current legacy BIOS boot setting to uefi since it has a newer ssd in it? just now discovered it was set that way (b'ot it used off eBay over a yr ago with Win-10-pro & new Samsung 500GB ssd)
lattitude e5550 currently set to legacy BIOS boot; can i simply convert to uefi?