Each time i tried to access the folder, no data showed and on the bottom right side appear a "!" mark which says "Windows - Delayed Write Failed".
I want to recover all my data using disktest.
Do i need to prepare another hdd to store all of the data? Or will it recover in the hdd itself?
Here are few steps that i have tried.

I chose create.

I chose my external hdd 320gb, then proceed.

I chose Intel.

I chose Analyse.

I chose quick search.

From here i don't know what to do.
[spoiler=Langkah 7]

When i type "p", i can access all the data and folder which didn't show in windows explorer.
But then i don't know what i must do.
Please help me.
Thank you.