Follow up:

======== STEP 1 ========

Step 1: Add this to your CSS area or CSS file

Code:

======== STEP 2 ========

Step 2.1 Look for:
(this is for: 0 Comment; 1 Comment; 10 Comments. It shows up on your main page)

Code:

Step 2.2 Change to:

Code:

======== STEP 3 ========

Step 3.1: Look for:
(this is for: the 0 Comment; 1 Comment; 10 Comments. This shows up when viewing a specific post.)
(Note: Some templates do not have this, so if you can’t find it, don’t bump your head instead, skip to the next step.)

Code:

Step 3.2: Change to:

Code:

======== STEP 4 ========

Step 4.1: Look for:

Code:

Step 4.2: Usually, above that bit (Step 4.1) you will find this:

Code:

* Note #1: It may be enclosed on a DIV instead of a P element
* Note #2: Sometimes its arranged differently, just look for any bits as shown on Step 4.1, also be sure it looks closely similar.

Step 4.3: Once you find it, change it to:

Code:

======== STEP 5 ========

Step 5.1: Look for:

Code:

Step 5.2: Above it add:

Code:

Step 6.3: From the Step 6.2 code, change the DISQUS-SHORT-URL to well, your blog’s DISQUS URL.

Example: If your DISQUS URL is LibreSoftware.disqus.com then change DISQUS-SHORT-URL to LibreSoftware, there is one to change.

======== STEP 7 ========

Step 7: Copy your final code to your Blogger’s Template and Save it.

======== STEP 8 ========

Step 8: Force Refresh your blog and blog-post (usually CTRL+F5) to see the changes.

* Force refreshing tells your browser not to use your browser’s cache, instead fetch the files fresh from the server.

YOU’RE DONE!!

These edits are designed to still show the comments posted on your built-in comment system while at the same time, disabling any new comments from being posted (on your built-in comment system) by removing the link.

If a user knows the direct link to Blogger’s/BlogSpot’s built-in comment system, s/he can still post comments on your blog that way. To effectively disable it without hiding all previous comments, you need to edit the Post Options of each of your posts and change it to “Don’t allow, show existing".
Later however, Disqus will have an import feature, so all old comments will be copied to your Disqus as well. Until then, this is the solution and you have to be patient.

There is a way to show the “## Comments” from your built-in comment system, it isn’t included here (did not bother implementing that on the blogs I handle).