BOINC data directory
From BOINC Wiki
The default directory where BOINC will install the data files to is:
- Windows 98/SE/ME/2000: No support.
- Windows XP: C:\Documents and Settings\All Users\Application Data\BOINC (*)
- Windows Vista/7/8/8.1/10: C:\ProgramData\BOINC (*)
- Linux: Berkeley installer: default in the Home ./BOINC directory
- Linux: Package Maintained installer: depends on the package
- Macintosh OS X: /Library/Application Support/BOINC Data/