Will Clear and delete everything make me lose hacks

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Will Clear and delete everything make me lose hacks

My Hr10-250 has a new drive purchased from DVRupgrade about 8 months ago. I record alot and extract alot. The unit has been exhibiting strange behavior in terms of slow operation, freezes,requiring me to unplug the unit to free up. I think it it is time to Clear and delete everything. I understand this to be basically a reformat of the drive. I have pulled everyhting off I want in anticipation of doing this. How do i get to it and will I lose the PTV net features and the associated hacks.