Hi Karl, see http://root.cern.ch/root/htmldoc/TTree.html#TTree:ChangeFile The maximum file size is still 2 Gbytes. Rene Brun karl hauschild wrote: > > Hi, > > I would like to create files greater than the current 2 GB > restriction. > > I found this an old mail related to root files > 2 GB from > Norbert Danneberg "Large Files" and the reply from Rene which > dates from Thu Jul 29 1999. > > In it is stated that > "One of the TFile data members fUnits describe the number of bytes for > the pointers in the file. Currently fUnits=4. Setting fUnits to 8 to get > 64 bits pointers requires a few more changes (typedef for Seek_t in > particular)." > > Has anyone performed these changes ? > > Thanks, > > Karl
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