I'm using a trial version of Acronis 11 and testing it with backups to an external usb drive (Seagate Agent Pro). The issue is when the backup starts Acronis gives an error stating that a sector on the drive can not be read. When I clik Ignore, there is a similiar error relating to a different sector. There are about 20 sectors that can not be read. Do I need a new drive? (It is new and under warranty). Do the mentioned errors mean the backup will be bad? Will Acronis write to those sectors even though it can not read from them? Any other advise is most welcome.