This is weird ! I bought 200GB Western Digital HD last week , since then I was trying to copy some files from my old HD 120GB same brand , it copys but when I copy files to the last partition of my new HD after about 16GB or so , it reboots and XP won't boot up again showing this message "Error loading operation system" . So I had to reinstall XP again (for more than 10 times now I swear) , both are NTFS , no problem with the partitions , it's confusing . I had the BIOS set to LAB , I googled it but came up with absolutely no solution . Has anyone ever got this problem before?

any hints ? Thanks .