Just a quick question. I plan to reinstall my Windows, but my project is far from completion. Is the boinc client sending finished work all the time to the servers, or does it waits for the project to finish? If I format my hard drive and my project is.. let say at 25%, is the finished work lost? Should I wait for the project to finish?

That depends on what project you are attached to. Some projects, such as Climate Prediction send periodical 'updates' back to the project servers. Most projects require you to run the task to finish, upload & report it to get everything done and be eligible for credit.

You could make a back-up of your BOINC Data directory, say to a USB stick. If you want to write it to a CD, make sure to zip or RAR everything first, as writing something to a CD will make it read-only.

Then after you're done with reformatting/reinstalling, you put the BOINC Data directory back first and then reinstall BOINC, pointing the Data directory path in the installer to the Data directory you just wrote to the drive. Then you can continue with your work.

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Thank you so much :). Yes, I am running climateprediction :). So its safe to format my hard drive without loosing the finished data :). Thank you again. Happy holidays.

PS: It is not about the credit, I just don't want the valuable information to vanish :).