During boot, Acronis emergency boot CDs give errors sim to: hde: bad access : block ....... hdf: bad access : block ...... These look intimidating. I experimented a bit and found that they disappear when I pull the Adaptec ASH-1233 ATA controller (Silicon Image Chipset). The drives attached are new and have been chkdsk'd several times after formatting. Both 300gb seagates. Nothing unusual. Oddly enough, Acronis does not complain about an off-brand (Syba) SATA controller which is about the only thing from a non-major manufacturer. Any ideas about the error? I suspect that it is related to the Adaptec hardware.