You don't. When you format your computer it deletes everything. No exceptions. If you want to set your computer back to the way you got it from factory then you can use the disks that you got with your computer.
In order to manually install an addon, first download the addon and unpack its zip file. Everything contained inside the zip file should then be copied into the World of Warcraft\Interface\Addons folder. When you start up World of Warcraft again, click the "addons" button at the bottom left of the character selection screen and make sure that the addon is there and the box in front of it is checked. The addon should now be running properly. If the addon has not been updated for some time, you may need to click the "load out of date addons" option for it to work, but this increases the chance of the addon causing errors.
The Curse client is a pretty good piece of software to have if you either have trouble installing addons manually or if you want to upgrade your addons faster.
The easiest way to get addons and install them are with one of the two major addon clients, The Curse Client (requires a curse account) and WOWInterface's Minion. To manually install an addon, you need to download it to your computer, unzip it if it is zipped and then move it to your %wowfolder/interface/addons/ directory.
Download a wow addon manager like wowmatrix. Google Wowmatrix --- Inside your World of Warcraft game folder you will find a folder called "Interface". Inside is a folder called "Addons". Addons provided on abovementioned websites usually come zipped, with the files in a folder with the addon's name. Simply copy this folder entirely into the "Addons" folder. Make sure to quit WoW and restart it. At your character selection screen, at the bottom right, is a button "Addons". Click it to see a list of addons you are using. Make sure all addons you want to use have a tick in the box, and that the box "Load out of Date Addons" is ticked, in case you installed an older addon. Log into your character, and the addon should now be active.
Without any plugins or addons installed, you can expect to see 150-200 MB used.
True... add-ons and/or toolbars are loaded into memory (RAM)... The less RAM you have available to the computer's processor - the slower the computer runs.
You can find Google Translate directly in the related link. You can also find it in Google Toolbar, Google Shortcuts Addons installed in Mozilla Firefox.
Currently, the game after install is about 33 gigabytes. You could have a little more or less depending on if you have addons installed.
You can get Addons from either: -Blockland Fourm's Add-On Page -Return To Blockland
no
Any addon is legal as long as it follows blizzards guidelines. Hence, most addons are legal.
on addons ( steam/steamapps/garrysmod/garrysmod/addons)