Installing new BOINC version over old

Message boards : Questions and problems : Installing new BOINC version over old
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Profile Guy
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Message 110939 - Posted: 20 Jan 2023, 12:04:51 UTC

Hello,
I want to install the latest BOINC - (boinc_7.20.2_windows_x86_64_vbox.exe).
I have an existing install - (boinc_7.16.20_windows_x86_64_vbox.exe) with a few days of workunits (Einstein) cached locally.
Will the work units all be discarded?
Thanks.
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Richard Haselgrove
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Message 110940 - Posted: 20 Jan 2023, 12:15:49 UTC - in response to Message 110939.  

No
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Profile Guy
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Message 110943 - Posted: 20 Jan 2023, 20:26:30 UTC - in response to Message 110940.  

OK. That worked. Thanks!
I did a "repair" install over the existing and the new client is registering OK.
The reason I upgraded was to try and clear an LHC@home problem with "CMS Simulation 70.20" workunits. VirtualBox was not working and reporting an error when I tried to investigate... (I'm not an expert, by the way!)
The problem has now gone and the LHC workunits are processing correctly!
I can now access VirtualBox and see the running LHC tasks running. Done and dusted.
Thanks Richard!

P.S.
I'm curious: Please; if I had chosen to "remove" and reinstall, would that have deleted the existing workunits?
Thanks again.
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Richard Haselgrove
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Message 110944 - Posted: 20 Jan 2023, 21:49:51 UTC - in response to Message 110943.  

No
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Profile Guy
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Message 110945 - Posted: 20 Jan 2023, 22:03:43 UTC - in response to Message 110944.  

Thank you.
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Profile Jord
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Message 110947 - Posted: 20 Jan 2023, 23:47:00 UTC - in response to Message 110945.  

BOINC consists of a projects directory where the executables of BOINC itself are stored and a data directory where the executables and tasks are stored. When you uninstall BOINC or install an update to BOINC (which also uninstalls the previous BOINC), you deal only with the programs in the programs directory. The contents of the data directory are untouched by the BOINC installer.

(slightly longer explanation than No)
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Message boards : Questions and problems : Installing new BOINC version over old

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