Question Dosdude1 patch for Catalina --- reinstall query ?

Dec 8, 2021
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Hi,I have just installed The dosdude1 patch to my late 2008 MBP . it had El Capitan , and updated ok ,but i failed to delete previous data/profile as i want to give it to my kid.
So, now I want to wipe disk ,But am unsure if i can do that from recovery disk, as you would from a native Catolina Mac . Has any one done this ,as if i wipe ssd i won't have the patch to open Catalina, or will I? or will i need it ?

Really need advice from someone who is sure about this, as i don't want to corrupt or brick the mac.
many thanks in advance.
P.S. have looked online to no avail ......
 

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