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crwdns2944351:0crwdnd2944351:0Convert a 360 (Fat) hard drive into a 360 S hard drivecrwdnd2944351:0crwdne2944351:0

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Introduction
'''''ATTENTION: Technically the Xbox Live ToS prohibit this, but the Xbox Live enforcement team typically doesn't care about the hard drive modification. You may be banned from Xbox Live. YOU HAVE BEEN WARNED!!!'''''
If you have an Xbox 360 4GB console, this guide will show you convert a fat 360 hard drive to work in a E/S console. This can be used as a low cost solution to add more storage, enable Xbox emulation or fix failed NAND flash. '''''Most fat 360 drives are smaller than a proper S hard drive, so you will most likely end up with a smaller drive using this method.'''''
For this guide, I picked up a used 20GB Fat 360 hard drive. This is one of the original capacities and is abundant, so finding is cheap and easy. While this is significantly smaller than the OEM drive (120/250GB), this will allow for game save storage and Xbox emulation. '''''If you need a lot of storage, get a 120GB drive.'''''
'''''Guide notes'''''
* '''''DO NOT FORMAT THE DRIVE EXTERNALLY!!! This will erase the security sector.'''''
* '''''Depending on where you purchased your drive, THIS MAY VOID YOUR WARRANTY. Keep this in mind if you go this route.'''''
** '''''There are no fat drives With a Microsoft warranty left. If the drive is sold as-is, there is nothing to worry about.'''''
** '''''Since most Fat 360 consoles are dead (and all surviving ones will fail), it may be better to purchase a tested drive.'''''
* '''''Most Fat 360 drives are 20GB or 60GB.''''' Fat 120GB drives are uncommon.
** '''''Consider your storage needs before buying one of these early small drives.'''''
* '''''You must use an aftermarket enclosure. OEM drives are glued shut and will not re-seal.'''''
** 3rd party enclosures are not hard to find but are typically only sold online.