Windows 10: Two OS in Windows 10 - is this slowing the laptop?

Last time I had to do I hard restart I noticed I seem to have two OS's (both Windows 10) and I was given a choice about which one to use when restarting. Not sure how this came about, but when I go to This PC in Windows Explorer I see a drive called OS (D. The usage bar is red and shows only 15 GB available of 185 GB.

First question is whether this situation is likely to be slowing the computer, which has been running lately like a relic from the '90s.

Second question is how to determine which OS is unecessary and how to remove the unecessary OS, or if doing this is even necessary.

The laptop is a low-end Asus about 3 years old.

:)

 

Windows 10

no, you can't go back..
I suggest creating a backup image of your os drive

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

windows 10 slow boot

I was having a slow boot issue on my Windows 7 install a little while back. It would take about 30 - 40 extra seconds to boot up for whatever reason.

I would try following these steps, while this didn't solve my issue, it did increase Read/Write to where it should be.

http://www.disk-partition.com/kb/tips-ssd-optimization-windows7-1.html

Looks to be similar to this: https://www.back2gaming.com/focus-story/ssd-optimization-for-windows-10-windows-8-and-8-1/


In the end, I had to reinstall my Windows 7 entirely to fix the booting issue. It was taking around 35 seconds to boot, and after the fresh install it takes about 7 seconds to boot.