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I managed to do it with diskpart. What I was missing is the command to create a new partition. So here is a run-down of all the commands I used, step by step.

Beware that when typing select disk 1 (step 4), your disk number may be different. Selecting the incorrect disk may result in significant data loss.

I assume you know how to get to the Run prompt since you have arrived at SU. But if not, just press and hold down the Windows key on your keyboard. While still holding the Windows key, press the R key. Voilà! La Run prompt! L'invite de commande!

1. cmd
2. diskpart
3. list disk
4. select disk 1
5. list partition
6. clean
7. list partition
8. create partition primary
9. list partition
10. format fs=fat32 quick
11. list partition
12. exit

In case you haven't relised it yet, you have to press the Enter key on your keyboard after each command line above.

Here it is now:

Shows up as a 14.6 GB drive.

And it looks good in diskmgmt.msc too. So it's all good now.

I managed to do it with diskpart. What I was missing is the command to create a new partition. So here is a run-down of all the commands I used, step by step.

Beware that when typing select disk 1 (step 4), your disk number may be different. Selecting the incorrect disk might erase your whole computer's main disk drive, losing all your data on it.

I assume you know how to get to the Run prompt since you have arrived at SU. But if not, just press and hold down the Windows key on your keyboard. While still holding the Windows key, press the R key. Voilà! La Run prompt! L'invite de commande!

1. cmd
2. diskpart
3. list disk
4. select disk 1 (Careful! Choose the correct number here. See note above.)
5. list partition (Inspect the results to double-check this is the right disk)
6. clean
7. list partition (There should be none)
8. create partition primary
9. list partition (There should be one)
10. format fs=fat32 quick
11. list partition (There should still be one)
12. exit

In case you haven't realised it yet, you have to press the Enter key on your keyboard after each command line above.

Here it is now:

Shows up as a 14.6 GB drive.

And it looks good in diskmgmt.msc too. So it's all good now.

I managed to do it with diskpart. What I was missing is the command to create a new partition. So here is a run-down of all the commands I used, step by step.

I assume you know how to get to the Run prompt since you have arrived at SU. But if not, just press and hold down the Windows key on your keyboard. While still holding the Windows key, press the R key. Voilà! La Run prompt! L'invite de commande!

1. cmd
2. diskpart
3. list disk
4. select disk 1
5. list partition
6. clean
7. list partition
8. create partition primary
9. list partition
10. format fs=fat32 quick
11. list partition
12. exit

In case you haven't relised it yet, you have to press the Enter key on your keyboard after each command line above.

Here it is now:

Shows up as a 14.6 GB drive.

And it looks good in diskmgmt.msc too. So it's all good now.

I managed to do it with diskpart. What I was missing is the command to create a new partition. So here is a run-down of all the commands I used, step by step.

Beware that when typing select disk 1 (step 4), your disk number may be different. Selecting the incorrect disk may result in significant data loss.

I assume you know how to get to the Run prompt since you have arrived at SU. But if not, just press and hold down the Windows key on your keyboard. While still holding the Windows key, press the R key. Voilà! La Run prompt! L'invite de commande!

1. cmd
2. diskpart
3. list disk
4. select disk 1
5. list partition
6. clean
7. list partition
8. create partition primary
9. list partition
10. format fs=fat32 quick
11. list partition
12. exit

In case you haven't relised it yet, you have to press the Enter key on your keyboard after each command line above.

Here it is now:

Shows up as a 14.6 GB drive.

And it looks good in diskmgmt.msc too. So it's all good now.

I managed to do it with diskpart. What I was missing is the command to create a new partition. So here is a run-down of all the commands I used, step by step.

I assume you know how to get to the Run prompt since you have arrived at SU. But if not, just press and hold down the Windows key on your keyboard. While still holding the Windows key, press the R key. Voilà! La Run prompt! L'invite de commande!

1. cmd
2. diskpart
3. list disk
4. select disk 1
5. list partition
6. clean
7. list partition
8. create partition primary
9. list partition
10. format fs=fat32 quick
11. list partition
12. exit

In case you didn't relise that, you have to press the Enter key on your keyboard after each command line above.

Here it is now:

Shows up as a 14.6 GB drive.

And it looks good in diskmgmt.msc too. So it's all good now.

I managed to do it with diskpart. What I was missing is the command to create a new partition. So here is a run-down of all the commands I used, step by step.

I assume you know how to get to the Run prompt since you have arrived at SU. But if not, just press and hold down the Windows key on your keyboard. While still holding the Windows key, press the R key. Voilà! La Run prompt! L'invite de commande!

1. cmd
2. diskpart
3. list disk
4. select disk 1
5. list partition
6. clean
7. list partition
8. create partition primary
9. list partition
10. format fs=fat32 quick
11. list partition
12. exit

In case you haven't relised it yet, you have to press the Enter key on your keyboard after each command line above.

Here it is now:

Shows up as a 14.6 GB drive.

And it looks good in diskmgmt.msc too. So it's all good now.