How to Create Extended Partition / Logical Drives Where Needed

The Windows Master Boot Record (MBR) partition structure supports a total of only four (4) partitions per Hard Disk Drive / Solid State Drive, they can be either 4 Primary partitions or three (3) Primary partitions and a single (1) Extended partition.

This shows the different methods to create an Extended partition wherever you need one so you can create as many Logical drives as there are available drive letters that can be used to install a Windows Operating System or for data storage.
If there are 3 existing Primary partitions on the HDD / SSD already, the fourth partition created using Windows disk management will be an Extended partition by default.

To view the relevant information on the partition structure, type diskmgmt.msc in the Windows start menu search box, then right click the entry and click "Run as Administrator" if you should get a User Account Control (UAC) prompt enter your user credentials and click Yes.

Method One
This is what I'll be starting with.

 

 Open an elevated command prompt, in the command window that opens type diskpart and hit the key, all commands are followed by .

Here are the commands, click the images below to see how they are implemented.

    list disk
    select disk # (# = target disk number)
    create partition extended
    exit (2 times to close the command window)
If you need to create a specific size Extended partition, use this command.

    create partition extended size=61440 <- 60gb="" br="">
It has to be entered as MB and 1024MB = 1GB so 1024x60 = 61440
You can create any size you need using the formula above.

 

Now in Windows disk management right click the Extended partition Free Space to create Logical drive(s) as needed, anything created within an Extended will be a Logical drive by default.

You can create as many Logical drives within an Extended partition as there are available drive letters; you can create and name the drives in any way you like, this is just an example.