Hello, Using T.I. 9.0 i created a full backup of my C: disk, with split file, giving me 3 files *1.tib *2.tib, *3.tib, for a total of 3 Gb. Then i scheduled an incremental backup every day with the above full backup as main. Next day without any change to my C: disk, the incremental backup started at the scheduled time, and created again 3 more files with the same size of 3 Gb (*4.tib, *5.tib,*6.tib). What is wrong ?? i was supposing to get in the incremental backup file(s), only the différence between the full backup time and the day after (no change in the C: disk except Windows XP working changes, but why 3 Gb more ??). Thanks for any answer.