Remove old System Partitions

[dominic2005]

I have a drive attached that previously had an installation of Windows 10 on.

How can I remove the old Recovery Parition (450MB) and the EFI Partition (99GB)?

Disk Management won't allow me to remove it.

Thanks

 

[CountMike]

http://www.pcdisk.com/download.html

 

[Colif]

disk management too smart for its own good - it knows what they are and says nope

Easiest way is boot from a linux live boot disc and use it to ipe them, linux cares not for windows permissions.

other, if you want to wipe hdd, is download http://www.dban.org/ and after disconnecting your current c drive (don't want accidents) use it to wipe hdd.