Hard disk detected but not access

hi,
Hard disk will phase lot of problems every day.today problem is:
when you boot your computer it will not boot and its shows error.and it kis not detected in bios.when you goes to install any os it will shows error like"disk does not access" .
There are 2 tips to repair it.
Method 1:
to repair it:    in xp:
create master slave hard disk in computer.
you will get repaired disk driver in bios.
after os boot go
my computer->manage(right-click)->disk management;
you will see list of disks.and select your disk(repaired) .right-click select initialize.
thats all..............
For win 7
create master slave hard disk in computer.
you will get repaired disk driver in bios.
after os boot go
my computer->manage(right-click)->disk management;
you will see list of disks.and select your disk(repaired) .right-click select initialize.
select 1st potion.ok
thats all..............
Method 2:
for win X commend promt:
diskpart
list disk
select disk disk number(select disk 1)(repaired)
clean
exit.....