I have True Image 10 running under Windows XP Home Edition. My Acronis Secure Zone is on my 250GB external HD (Drive G) which has a USB 2.0 connection to my PC. When I change the size of the Secure Zone this drive G disappears from Windows Explorer. This was rather worrying, to say the least, the first time it happened, but after a bit of searching I discovered that when Acronis partitions my G drive to create the Secure Zone it deletes the drive letter, G. The problem can be cured by resetting the drive letter to G using Disk Management, but it needs to be done each time I change the Secure Zone size. The problem is obviously liveable with, but it is extremely annoying. Is this a known problem or is it just my set-up, and is there any cure for it?