Partition / Extended : Logical Drives1
) Open an elevated command
prompt, in the command window that opens type diskpart
and hit the <enter> key, all commands are followed by <enter>.
Here are the commands, click the images below to see how they are implemented.
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
It has to be entered as MB and 1024MB = 1GB so 1024x60 = 61440
You can create any size you need using the formula above.