To move the Central or Probe database to another drive, follow the below steps.
Stop the Central or Probe service.
copy the mysql/data folder and mysql/tmp folder from c:\programfiles\adventnet\me\central\mysql\ to the drive you want say e:\data and e:\tmp. [DONT DELETE THESE FOLDERS FROM THE ORIGINAL LOCATION ..... JUST COPY THEM....IF THESE FOLDERS ARE MISSING IN THE DEFAULT PATH MYSQL WONT WORK PROPERLY]
Open the startMysql.bat file [<central/probe home>\bin].
Open the startMysql.bat file [<central/probe home>\bin], look for defaults-file="..\data\my.cnf" datadir=..\data tmpdir=..\tmp
and update the new location where the 'data' and 'tmp' files are available.