Hi. Sorry for digging up a question about this old version (the only one Acronis gave for free ), but i have searched this forum and Google without any useful results. I have been installing/testing a few outdated Windows in Virtual PC 2007 SP1. To reduce the Virtual Hard Disk size (VHD) after a Windows installation, i generally backup Windows to a second VHD using ATI7 rescue media, then restore it to an empty copy of the original VHD, so that there is no empty space left between the files. As an example, after installing my old Windows 98SE, the VHD was about 500mb in size because of empty disk space between files, but files inside were ocupying only 210mb. After a backup/restore to an empty copy of the VHD, size was only 218mb. I had no problem with backing up, restoring and booting ms-dos (weee 589k conventional memory available ) and Windows 9x. I do have a problem booting Windows NT4, 2000 and/or XP after the backup/restore process. Tried with FAT and NTFS file systems. The messages i get (translated from Portuguese) when booting are: "'disk boot failure, insert system disk and restart" "A disk read error occurred; Press Ctrl+Alt+Del to restart" or simply a blinking cursor... I'm doing a full backup (disk and partition) with no compression, and when restoring, ATI7 does not ask to select a drive letter (don't know if this is relevant or not). The same problem was reported at experts-exchange, but only regarding NT4. I know NT4 is picky and at the slightest discrepancy it will not boot, but the same is happening to 2000 and XP, so... is ATI7 compatible with any of this 3 Windows NT versions? Thanks for your attention.