Creating a Boot Partition on Extended Root Device (MBR)

After resizing the VM with growfs disabled, create and format the new partition.

Important: You must extend the disk, see Creating a Boot Partition in Microsoft Azure.

The following example creates a MBR partition.

Use "fdisk" to create new partition.

# fdisk /dev/sda

Command (m for help): p

Disk /dev/sda: 17.2 GB, 17179869184 bytes, 33554432 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x391eacf4

Device Boot      Start         End      Blocks   Id  System
/dev/sda1         2048    20973567    10485760   83  Linux

Command (m for help): n
Partition type:
p   primary (1 primary, 0 extended, 3 free)
e   extended
Select (default p): p
Partition number (2-4, default 2): 2
First sector (20973568-33554431, default 20973568):
Using default value 20973568
Last sector, +sectors or +size{K,M,G} (20973568-33554431, default 33554431): +1G
Partition 2 of type Linux and of size 1 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.