Code to change from read-only file system to read/write file system?

[marc]

stevenvollom said:

> marc wrote:
>> stevenvollom said:
>>
>>
>>> I am stuck in a command line that is read only.  I want to copy the
>>> xorg.conf file and rename it for  back-up and am unable to do so.
>>>     
>>>     
>>   sudo cp xorg.conf xorg.conf~
>>
>>
>>
> Thanks but that did not work.

In what way didn't it work?

-- 
Best,
Marc