@@ -2,7 +2,7 @@

 ## Introduction

-Photon OS manages packages with an open source, yum-compatible package manager called tdnf, for Tiny DNF. Tdnf keeps the operating system as small as possible while preserving yum's robust package-management capabilities. 

+Photon OS manages packages with an open source, yum-compatible package manager called tdnf, for [Tiny Dandified Yum](https://github.com/vmware/tdnf). Tdnf keeps the operating system as small as possible while preserving yum's robust package-management capabilities. 

 On Photon OS, tdnf is the default package manager for installing new packages. It is a C implementation of the DNF package manager without Python dependencies. DNF is the next upcoming major version of yum. 

@@ -10,11 +10,11 @@ Tdnf appears in the minimal and full versions of Photon OS. Tdnf reads yum repos

 In the minimal version of Photon OS, you can manage packages by using yum, but you must install it first by running the following tdnf command as root: 

-	tndf install yum

+	tdnf install yum

-## How to configure a repository

+## How to Configure a Repository

-Photon OS comes with a prconfigured repository called `photon-iso` that resides in `\etc\yum.repos.d.` If you receive an access error message when working with the `photon-iso` repository, it is probably because you do not have the Photon OS ISO mounted. Mount the ISO and the run the following command to update the metadata for all known repositories, including `photon-iso`: 

+Photon OS comes with a preconfigured repository called `photon-iso` that resides in `\etc\yum.repos.d.` If you receive an access error message when working with the `photon-iso` repository, it is probably because you do not have the Photon OS ISO mounted. Mount the ISO and the run the following command to update the metadata for all known repositories, including `photon-iso`: 

 	mount /dev/cdrom /media/cdrom

 	tdnf makecache

@@ -44,4 +44,4 @@ List enabled repositories:

 Tdnf implements a subset of the dnf commands as listed in the [dnf guide](http://dnf.readthedocs.org/en/latest/).

-For a description of the tdnf commands and options, including examples, see the [Photon OS Administration Guide](https://github.com/vmware/photon/blob/master/docs/photon-admin-guide.md).

+For a description of the tdnf commands and options, including examples, see the [Photon OS Administration Guide](https://github.com/vmware/photon/blob/master/docs/photon-admin-guide.md).

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