I have 2 hard drives with one of them partitioned into drives C and D (Primary). All my program files are on another hard drive G (Master). My problem is I tried to backup my files as normal to my D drive but I received a message that I would have to create more space on the disk (full). I increased the size of my secure zone, rebooted as requested and then found my D drive had disappeared. from view in my windows explorer. I tried reducing the zone size and rebooted. Still missing. I then uninstalled the secure zone. Still nothing. Resorted to uninstalling the program in the hope that my D drive would show up. Still missing. I have the latest updates installed on my Acronis True Image 9. I have re-installed and the secure zone wizard shows my two hard drives Disk 1 with 76.69GB and Disk2 76.33 GB which is correct. I then tried to create a secure zone so that I could try removing by this method but in the process I received an error message E000101F4: Failed to write data on the disk. Failed to write to the sector 0 on the hard disk 2. Anyway I continued pressing cancel and a message, operation successful and reboot. However at startup my drive d is still missing. Can you please help me access my D drive again and have Acronis available to my backups there again. Sadly I had disabled my windows XP restore to an earlier date prior to doing all this. Before problem in my windows explorer properties. Local Drive Volumes c: (NTFS on drive 1 ) 41.95 GB 9.20 GB free d: (NTFS on drive 1) 23.89 GB 9.47 GB free g: (NTFS on drive 0) 82.34 GB 48.82 GB free After problem c: (NTFS on drive 1) 41.95 GB 11.64 GB free g: (NTFS on drive 0) 80.34 GB 59.63 GB free As you can see drive d has gone. Please advise and as I only do a full backup of drive g to the d drive can you tell me what approximate space I should allocate the secure zone once we are back up and running again. Thanks for any help you can give me.