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 Windows OS Hub / Windows 10 / Creating Multiple Partitions on a USB Drive in Windows 10

September 22, 2017 Windows 10

Creating Multiple Partitions on a USB Drive in Windows 10

In the release Creators Update (1703) for Windows 10 the in-built support of reading and creating multiple partitions on any USB storage device (no matter if it is a USB drive or disk) appeared. Previously, when connecting a USB stick with several partitions (e. g., created in Linux) to a computer running Windows, the system saw and could work only with the first primary partition. Normal operation with multiple partitions was available only for the drives identified as fixed (local).

We remind that common USB drives in Windows are identified as Basic, while USB sticks and SD cards — as Removable. This feature is realized by checking RMB (removable media bit) on the flash controller. Earlier we have considered a way to substitute the controller response using Hitachi Microdrive (How to Make Windows Detect a USB Flash Disk as Hard Drive in Windows).

Windows 10 Creators Update automatically shows all partitions on a USB stick ignoring RMB, and this device is still identified as Removable.

To create the second (or subsequent) partition on a USB stick:

  1. Format it into NTFS file system and open Disk Management console.
  2. Right-click the partition on the USB stick and select Shrink Volume in the context menu.shrink usb volume in windows 10
  3. Specify the size of free space after shrinking and click Shrink. For example, we want to create two partitions of 7 GB and 8 GB on the 15 GB storage device.shrinking volume size
  4. Right-click the unpartitioned space and select New Simple Volume to create another partition.create second partition on a removable drive
  5. For instance, let’s create a FAT32 partitionsecond partiotion on usb flash drive - windows 10 v1703

As you can see, we have got the USB stick with two partitions, the file system of the first one is NTFS, and the second — FAT32. Both partitions are displayed in Windows and are ready to use.

You can create the same partition structure on the USB stick using DiskPart (it allows to create a FAT32 volume as the first partition, and an NTFS volume as the second partition that is impossible using the graphic interface). To do it, run DiskPart command in the console and then run the following commands one by one:

list disk
select <here you must specify the disk number assigned to the USB drive in your system>
clean
create partition primary size=3000
format quick fs=fat32 label="FirstFAT32Part)"
assign letter=J
active
create partition primary
format fs=ntfs quick label="Data(NTFS)"
assign letter=K
list vol
exit

You should bear in mind that USB sticks with multiple partitions will be correctly displayed only in Windows 10 v1703 or higher. The earlier Windows versions will display only the first partition.

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1 comment

George December 26, 2017 - 4:39 pm

Very helpful article. Well explained and straight to the point.

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