I used Partition Magic to change the cluster size on my boot partition (C:) from 4k to 16k. Drive will now not boot, but computer boots with a windows xp boot disk. I have done this on other computers and they either booted right up after the change, or booted after I ran chkdsk /f. I have run chkdsk several times. When I try to boot from the hard disk, I get a “Disk Read Error.” This happened before, and I used Partition Magic to reset the cluster size to 4k, and the drive booted. The only difference between my computer and the other computers is that my computer has a SATA-II drive (supported by the MB bios with no additional drivers needed) but the other computers have ordinary IDE drives.
