Today I was very lucky not to lose access to the data on all my hard disks after installing Norton SystemWorks 2006. My mistake appears to have been to include Go Back in the installation. On rebooting after finishing the install I found myself in a loop being unable to boot into Windows XP because Go Back did not like something on one of the disks. Unfortunately there was no way out of the loop. Since I had Acronis Images on my 2nd and 3rd drives I thought it would be a simple procedure to restore one of the images but when I tried this I was horrified to find that Norton had changed my disks to Dynamic and Acronis did not support dynamic disks! Fortunately I had an external drive that thankfully wasn't plugged in while Norton was installing so I was able to restore an image from the external USB drive. Then when I booted into Windows after the restore of the Acronis image I found that my 2nd and 3rd drives where all my data was that I was going to copy back to the restored C drive were not listed in Windows Explorer! Windows recognised the drives in Device Manager but refused to allow me to assign a label to them and access the data on them. It looked like formatting them and losing the data on them was the only way I could get them back! Thankfully one of them reappeared when I uninstalled Go Back which remained on these 2 drives but this only allowed me to see the data on one of the drives. I was only able to access the data on the other drive after I made it dynamic again. I was then able to access the data I needed from this drive and I will then format it so it ceases to be dynamic so I can again store Acronis Images on it. The really frightening thing is that if my external hard drive had been connected while I installed SystemWorks it too might have been made dynamic and then I would have lost all my important data and all my Acronis images and would have been devastated because some of the data was very important to me and the rest while replaceable would have taken me months to build up again. I would also have had to do a new install of Windows and all my programs starting from scratch. I’m not certain if it was Go Back that changes the disks to dynamic or whether SystemWorks does it but I won’t be trying another install of SystemWorks after this potentially disastrous experience! I seem to remember reading in the past some time that Go Back was incompatible with Acronis but I didn't realise it was incompatible because it converts all your disks to dynamic rendering Acronis totally useless! The whole experience shows that you can never have enough backups in different places as if I had not had the external hard disk with Acronis images on it as well as backups of other important data, which by sheer luck was not connected when I installed SystemWorks, I would have found losing everything devastating. Norton ought to at least have the decency to warn you that if you choose to install Go Back as part of SystemWorks your hard disks will be converted to dynamic making programs such as Acronis inoperable. It's also a good reason why Acronis should support Dynamic disks.