Storage is used by Operating system

[Manajurie]

Serial number [Personal Information Removed]Can I buy a reasonable priced external hard drive for my Notebook Stream the storage is 30 gigs but the operating system has used all room and i get  notices that i have no room and no available room .

[WAWood]

@Manajurie 

While the bulk of the space on the small 32GB "drive" is taken up by Windows, a lot of the remaining is also taken up by historical Windows Updates as they do not clean up after themselves.

And, while you could use an external drive to store personal files, you can not install applications to that drive -- so that will not help with those issues.

You're basically stuck with what you have.

Here are some things you can do to recover some of the disk space:
http://www.tenforums.com/tutorials/3012-disk-cleanup-open-use-windows-10-a.html
http://winaero.com/blog/how-to-clean-up-winsxs-folder-in-windows-10/

Also, the community Win10 Forums has the following suggestions:
https://www.tenforums.com/tutorials/83441-free-up-drive-space-windows-10-a.html

Finally, there is a freeware app known as Wise Disk Cleaner. I use it every day to get rid of junk files: https://www.wisecleaner.com/wise-disk-cleaner.html