Upgrading from WordPress 1.5

I recently spotted this interesting Ask Metafilter thread where user gd779 tries to find a way to upgrade his old, WordPress 1.5 install. One of the answer is pretty detailed:

I think the right approach is going to be:

  1. Do a full backup of your WordPress files
  2. Do a full database backup (mysql dump using phpMyAdmin or similar)

Then, from your 1.5.2 install:

  1. Upgrade to 2.0
  2. Upgrade to 2.5.1
  3. Upgrade to 3.0
  4. Upgrade to 3.3.1

It is quite fascinating thinking about the solution to this. There’s an official Codex page called Updating WordPress, but it doesn’t seem to go that far back in time.

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