Note: If at any point you are unsure of the disk number, restart from the beginning, ensuring you follow each step correctly.
[The steps in this guide can also be transferred to other Windows computers]


First, ensure that the USB Drive or SD Card is unplugged to ensure that you do not delete the wrong drive by accident. If you wish to clean your:

Flash Memory Drive(WARNING: Not Recommended. I am not responsible for any damage you do due to improper drivers, lack of recovery partition, etc. There is no reason for doing this as the drive is soldered onto the motherboard, and can not be removed nor replaced or upgraded. You have been warned!)(Disk 0)

[NOT RECOMMENDED]
[NOT RECOMMENDED]
I HAVE NOT PERSONALLY TESTED CLEANING AND RESETTING THE FLASH MEMORY DRIVE AND WOULD RECOMMEND YOU JUST INDIVIDUALLY DELETE THE FILES YOURSELF! MUCH SIMPLER!!!!
you will need to first create a recovery partition on a drive(usually a USB Drive or SD Card) to ensure that you do not lock yourself out of your computer without the operating system! Please disconnect all drives from the tablet before beginning the steps below. When finished, you may use your recovery drive to recover your system.

Harddrive In Dock/Keyboard of T100(Disk 1 if applicable)

If you have a T100 that came with a harddrive in the dock, please first disconnect the dock from the screen and then reconnect it when told to do so in the steps below to ensure you do not accidentally clean another drive, or your Flash Memory by mistake.

USB/SD Drive
Please disconnect the drive from the T100 before attempting the steps below. You will be instructed when to reconnect the intended drive.


STEP #01
Please ensure your chosen drive is indeed disconnected to ensure the cleaning of the right drive takes place.

STEP #02
Windows 10: Click on the Start Button and type in 'diskpart' right click on it and select 'Run as Administrator'.
Windows 8 & 8.1: Bring up the charms bar and search for 'diskpart' right click on it and select 'Run as Administrator'.
If Diskpart does not come up Search for 'Command Prompt' and type in the
Code:
diskpart
command, to start Diskpart. Then follow the directions below(You may need to right click Diskpart on the taskbar => 'Pin to taskbar' => close Diskpart => right click Diskpart on the taskbar => select 'Run as Administrator' before proceeding)

STEP #03
Type into Diskpart the
Code:
list disk
command and hit enter to obtain information about each 'disk'(Drive) in/connected to your T100.

For an example of what you may see:
Code:
Microsoft DiskPart version 10.0.10240

Copyright (C) 1999-2013 Microsoft Corporation.
On computer: DKL

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online           58 GB      0 B        *

DISKPART>
Note: Disk 0 is your Flash Drive with the Operating System on it. DO NOT clean this drive unless you fully know what you are doing/what you are going to do/ the possible consequences.

STEP #04

Plug in the drive that you wish to reset. Type in
Code:
list disk
and hit enter.

You should now be looking at something that looks like this:

Code:
Microsoft DiskPart version 10.0.10240

Copyright (C) 1999-2013 Microsoft Corporation.
On computer: DKL

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online           58 GB      0 B        *
  Disk 1    Online           60 GB      0 B                     //Note: The bottom disk in the list is the device you just inserted. This is the one you clean. 

DISKPART>
Make sure that its size (you may have a 64GB USB with only 60GB usable, like my Disk 1) roughly corresponds to the size of the device that you want to reset.

STEP #05
Write down the disk number assigned by Diskpart to the device.

STEP #06
Now, let's select the device! Type in
Code:
select disk=number
where you replace 'number' with the number of drive you just wrote down.

STEP #07
Now type the following lines one at a time, each followed by an enter NOTE: THIS ERASES ALL DATA ON THE DISC! :
Code:
clean
convert mbr
create partition primary
1) Cleans the drive of ALL DATA
2)creates a new partition table(if you don't know what this is don't worry, you don't need to)
3) creates a new primary partition.
Now your Drive is functioning as a normal drive again and is ready to be used normally for storage of your 'pictures' and applications or setup as a recovery drive!

I hope this guide helped anyone that wanted to restore their drive to its previous condition! Ask any questions below.