Crossword Genius

Plant erasing non-users initially from restored computer system (8)

Ross

I believe the answer is:

platform

I'm a little stuck... Click here to teach me more about this clue!

'computer system' is the definition.
(computer hardware)

'plant erasing non-users initially from restored' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'from' is 'form' which is located in the answer.
The remaining letters 'plat' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for platform that I've seen before include "Raised level surface" , "Stand (taken by speakers?)" , "Stage, podium" , "Raised area for speakers" , "Stage for speaker or rail traveller" .)

I've seen this clue in The Times.
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