In today’s Oracle VM Manager there is no way of extending the disk size of a guest VM. However, via this tutorial I will show you how to extend the .img file.

PLEASE NOTE: It is highly recommended to make a backup of the disktoExtend.img file prior to trying the steps below.

Let us assume we have an Oracle VM guest which contains 3 files. The three files are the following: System.img, disktoExtend.img, and vm.cfg. Our guest VM is running RHEL/OEL.

[root@OVMSERVER]# ll
total 22000640
-rw-r--r-- 1 root root 26847313920 Oct 13 10:28 disktoExtend.img
-rw-r--r-- 1 root root 11630545920 Oct 13 09:57 System.img
-rw-rw-rw- 1 root root 459 Oct 13 10:27 vm.cfg

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