Restore point disappear in Windows 8

I setup several Restore points in Windows8 in case i can restore back to that point. but after many days, i do not know why it disappear. and i only can see Restore points that the system created automatically. Anyone have idea for this? Thank you
eemoonAsked:
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JohnBusiness Consultant (Owner)Commented:
Check Control Panel, System, Advanced System Properties, System Protection and then configure Restore Point Settings and Disk Space.  Make sure you have enough space allowed
eemoonAuthor Commented:
Thank you so much for your fast reply. and sorry i accidentally clicked the button of "helpful". i think your answer would be my solution.

Here are two questions:
1 how much space does one Restore point need?
2 based on your reply, i think the reason that the restore points i set up has gone is the automatic restore points were added one by one and occupied a lot space. so the my Restore points were deleted due to the newer automatic restore point. my question is how to stop the automatic restore point creating?
JohnBusiness Consultant (Owner)Commented:
I allow 10 GB on my machine.  

Windows 10 Restore Points

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eemoonAuthor Commented:
Can we create restore point manually. and then click on "disable system protection"? this way we can save much space and could convert the system to the restore point that i want.
JohnBusiness Consultant (Owner)Commented:
You should be able to but be sure to allow enough space. I use the points created by applications or Windows
JohnBusiness Consultant (Owner)Commented:
Also make sure you are local Administrator when making your restore points
eemoonAuthor Commented:
Thank you
JohnBusiness Consultant (Owner)Commented:
You are very welcome and I was happy to help. Happy New Year to you
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Windows 8

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