I have 3 partitions as you can see below, 2 Linux type partitions and 1 Extended partition.

I need to create 3 logical drives (sized 200M, 300M, 400M) inside of partition /dev/sdb3.

When I try to fdisk /dev/sdb3 and then enter command 'n', I get the following output:

All space for primary partitions is in use.

Might be a noobie question, but I would greatly appreciate any insight. Current Partitions

1 Answer 1


You need to run fdisk on the whole disk, not the extended partition:

fdisk /dev/sdb

Use n to create a logical partition; fdisk should say something along these lines:

Command (m for help): n
All space for primary partitions is in use.
Adding logical partition 5
First sector (1437744-3490550, default 1437744):

If it asks you what kind of partition to create, ask for a logical partition by entering l.

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