Permanently deleting data

[Dumb and Dumber]

I am selling a External HDD. But I want to make sure that nobody can recover whatever I deleted on the HDD. I deleted the partition, and created a new one with a complete format. Will deleting the partition, and creating a new one, effectively permanently delete all data?

 

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[mahleu]

 

[Dumb and Dumber]

 

[user 1447]

 

[mahleu]

 

[Kemosabe]

 

[Dumb and Dumber]

 

[johnc]

 

[Skylark]

 

[Kemosabe]

 

[Skylark]

 

[Dumb and Dumber]

 

[chrisc]

 

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[Skylark]

 

[Kemosabe]

 

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[Dumb and Dumber]

 

[Skylark]