My partition line is as follows
/dev/sda1 ext4 / 149.05GB 2.52GB 46.53GB boot
but still get no root file system defined
Thanks
Brian
ps the partition is empty except for the above.

I presume you mean Mint 16, but not sure about that "partition line".

Are you asking about the root file system / ?

You already have this (together with other directories such as /var and others).
On a new system you will only have maybe 20GB of space used (maybe less).

Your /home containing your user data takes up most of the space.

You will need to be a little less cryptic if you want help. What are you doing when you get the no root filesystem defined message?

It would not show 2.5GB used if it was empty. More information is needed.

In reading your post again, it seems you are trying to install Mint, correct? If that is the case, you need to select a mount point. The Installation Type window shows your partition, you click it to highlight it then click the Change tab below the window. In the new window, there will be several options, one of which is Mount point. Click the down arrow to the right of the box next to Mount point and select: / , which is the symbol for root then click the OK tab and proceed.

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The installation window does NOT show my partition.Why??
Thx
Brian.

Is that the partition you described in your initial post? If it isn't shown, where did you get the info posted in your initial post? By 'loading', do you mean you are trying to install Mint and again, are you using Mint 16 or the outdated and unsupported Mint 6? You arent' giving enough information for anyone to actually assist.

Linux Mint 16 Cinnamon.
from a good CD ie not downloaded.
I partitioned using GParted
From the opning screen I click install Linux mint
Welcome----English continue
Prepare to install Linux mint
Have at least 7.4 GB
Connect to the internet.
Installation Type
-----------------------(no partition shown)
click Install now
No root file system defined
Thx
Brian.

If no partition is not shown in the Installation Type window you won't be able to install because you need to select a Mount point/partition on which to install. I've seen other posts with this problem with Mint. If you created the partition previously with some other software it should show. Do you see unallocated or free space in the window?

From the minimal information you have posted, it's not really possible to try to give a realistic assessment. Too many possibilities such as not knowing your hardware, number of drives/partitions, other operating systems if any, bad download, bad burn, etc.

You seem to be giving conflicting information saying the Installation Type windows doesn't show any partition in your last post when in your first post, you had that information??

I think that Linux does not 'see' the Partition.

If you give Mint a blank disk it will do all the partitioning and formatting for you.

However, you can use the custom install to have more control over how it partitions your disk.
Mint will not overwrite other OS's - unless you tell it to.

The first 'Installation Type' windows should show you more than one option. If you already have an operating system, any operating system, on the computer, you should get "Install Linux Mint alongside" as well as the "Erase Disk" and "Something Else" options. You haven't indicated which option you chose. If you have no operating system on the computer, the first option won't be there.

I think you are right that Mint doesn't see the partition but we can only guess as to why. Boot the Mint CD and open a terminal and run the command: sudo fdisk -l(Lower case Letter L in the command) and post the output here. That information will tell what partition(s) you have and might help someone to help you.