I posted this issue to the Acronis customer support a week ago and since there's been no response I wonder whether anyone in this forum may have come across and have the solution or know whether DDsuite10 can provide it. I have used DD v.9.0 successfully since purchase with "ACPI=OFF NOAPIC"to copy the system partition of my primary drive using the rescue disc from internal PATA drive to external USB drive (Freecom disk) and to copy it back when I have had PC failures. (I take the Freecom disk to another physical location for safe keeping as a last resort backup.) The copy operation takes approximately 20 minutes in each direction ('C' drive size 25GB). The advantage, unlike a TI .tib image is that there is no NTLDR or other issues when copying the stored system partition back into the primary system partition, it's just a straight copy. I recently changed out both PATA drives for Samsung Spinpoint SATA II drives. DD9 sees both drives in Windows and the rescue disk sees them when using the 'safe mode' and can make changes to them and copy between them. However, while in 'safe mode' doing anything with the USB drive seems to fail. If I implement acpi=off noapic the screen scrolls until it reaches atap1 then repeats atap1 a number of times finally stating that atap1 has timed out after 30secs. it does this for the second drive also. When the scrolling reaches the end and I exit then only the USB drive is visible. Consequently the operation that worked very well with PATA drives now does not work at all. I don't understand why the "acpi...." command does not work with SATA drives. The drives are currently not in any raid array, since until I can get this problem solved I am just cloning my primary disc. Mobo is an older Winfast with SATA and PATA support Since I'm no expert any assistance would be appreciated.