How do I apt-get gddrescue and testdisk?

Question

Gddrescue and testdisk are not on the 12.04 ISO that I downloaded and burned to a CD that I'm currently using to boot my system. Where do I point apt-get to install those packages?

I have Internet access but got this results:

root@ubuntu:/# sudo apt-get install testdisk
Reading package lists... Done
Building dependency tree Reading state information... Done 
E: Unable to locate package testdisk
root@ubuntu:/#

Answer 1

Both packages are in the Universe repository. See this question to enable Universe repository :

• How do I enable the "Universe" repository?

In order to install them with the following commands you need an Internet access for your machine.

Testdisk :

sudo apt-get install testdisk

Gddrescue :

sudo apt-get install gddrescue

For installation without internet access see

• How can I install software or packages without Internet (offline)?

If that is not possible you may also try with a live rescue CD remix that already has these tools installed (e.g. SystemRescueCD, TestDisk Live CD)