Hi all, I have found External-USB device such as USB-IDE/SATA, has serious bug. example: Internal IDE HDD copy 4GB files to USB-IDE HDD on Windows XP. no problem. After copy, I check both 4GB files get different MD5/SHA1 signature. and, I open CMD, type fc /b D:\aaa.iso H:\aaa.iso the fc command report randomize address with different byte every time I check. Then, I change USB-IDE HDD's jumper (from Master to Slave), and CMD fc /b again...... WOW......total the same. (of course, MD5 and SHA1 are identical) I got some answer after examination, WRITE TO USB-IDE/SATA device are CORRECT DATA, BUT READ FROM USB-IDE/SATA device are WRONG DATA, IT WILL CAUSE ACRONIS RESTORE STAGE GET [CORRUPT FILE] REPORT, DUE TO USB-IDE/SATA chip bug (J.Micro chip) So, I think if someone has problem like, Backup -> OK, Validate Backup -> OK, (with internal device) move "backup file" to external device through USB-IDE/SATA -> Ok, restore failed and getting message "corrupt file", you need change your external HDD jumper to another setting. report over.