Disabling a cck field with form alter in DRUPAL

I know that we can't modify a cck fied in hook alter like a standard field o开发者_运维技巧f a standard drupal form.

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You can alter it, just like any other form. You must just make sure your hook is ran after the CCK, only then do you have the full CCK-ed form available.

You do that by setting weights in the system table.