Hi I have been using this for some time now and I'll be honest have not a clue how it all works , at best I have half an idea if you know what I mean. However I have always managed to make backups and on a couple of occasions restored those backups. I used to create incremental backups on a regular basis with no problems, the programme used to delete the older files if there was not enough space for the new backup. That was in the good old days. I changed PC and re_installed everything no problems. This PC has 4 hard disks 2 x IDE + 2 x SATA. The IDE drives are 500gb and 80gb the 500 being the primary boot disk the SATA are 200gb each. I use the 80gb disk purely for backups nothing else. On the primary C: drive I have 105gb of data/files including the operating system (Vista). This is the drive I back up. I regularly defragment and tidy these disks. After re_installing everything I found I was no longer able to create incremental backups and I was faced with a 'disk full error' so I started to delete the backup file and create a new full backup. This is a bit of a pain but I could put up with it. Now however I cannot even do a full backup as it fills up the disk when only around half way through. Consequence is at this moment in time I have no backup at all to restore if required. As far as I know I have not altered any settings and am using all the default setting, I only specify the backup location. Just one other point, I cannot create a secure zone on the backup disk, it would appear to start with the progress box showing the spends half an hour doing nothing before it all just disappears Any thoughts on my problems please.