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I'm not very familiar with windows' system restore mechanism, but wondering how much disk space is necessary (I just want to create my own single restore point)?

I just don't need windows to create restore point automatically, so I can reduce preserved disk space.

UPDATE

OS: Windows XP SP3 Enu

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Just tell Windows how much disk space to use. –  David Schwartz Apr 26 '12 at 5:21
    
related: superuser.com/questions/210297/… –  akira Apr 26 '12 at 5:58

1 Answer 1

up vote 2 down vote accepted

reading about restore points you can find the section "How much hard disk space does System Restore require?":

To store restore points, you need at least 300 megabytes (MB) of free space on each hard disk that has System Protection turned on. System Restore might use up to 15 percent of the space on each disk. As the amount of space fills up with restore points, System Restore will delete older restore points to make room for new ones.

System Restore will not run on hard disks smaller than 1 gigabyte (GB).

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Yeah , I just realized even the restore point I creataed manually are replaced.. –  warl0ck Apr 26 '12 at 6:47

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