I bought 80gb seagate hard disk st380215a, last year. Last month i cant boot t hd and cannot view t hd in bios. Than i installed my friend hd in my cpu, than that hd was view in bios. where my hd have 5yrs warranty i returned to seagate service centre and i got replacement for that hd. Than i created 4 partition as c,e,f,g. After some days i cant open t g drive and it was changed to c,d,e,f. now g drive was shown as f and while try to open it shows "to format t drive". so no other way i formatted and i loss all datas in g where it show as f. Than i installed hardisk inspector which use to inspect t status of t hardisk. in that sw it shows "your hardisk reliabity reaches threshold so backup ur datas and dont use this hd". Than within 2days my hd was not bootable and again shows t msg in boot sector as t previos hd " no bootable device found.... . Can anyone explain abt t problem. Y t seagate is not replacing t fresh hd? And problems in hd manufacturer or any new virus type?