avengeusa: I always backup my data on to DVD/RWs, that way if you accidently delete the file you have a backup. You can add files to a DVD/RW and the old data will be there until you run the erase utility. Another words, if you can create a DVD/RW with 1GB of data, and later add another 300MB of data, and the old 1GB of will be plus the new 300MB will be on your DVD/RW. When you accumulate enough then you copy the data to a DVD/R. The only drawback about a DVD/RW is that they write extremely slowly at 2.4X, which can take awhile, 1GB of data will take about half hour to write.