Spoiler: it’s mostly bugfixes.
Wait, What Now?
This could be anywhere from a few hundred MBs all the way up to a GB or so.
So… Should You Delete the Service Pack Backup Files?
Bottom line: You should never rush to install or delete things when it comes to major system changes.
As long as you use Windows Update set to Automatic for security patches, you’re safe.
If not, skip down.
