[GRASS-user] Re: Using an external hard drive as data source

[Hanlie Pretorius]

Thanks for all the replies.

I reformatted the external drive as FAT and let Ububtu mount it
itself, without editing fstab.

Then I started GRASS without the sudo option and by selecting the data
folder using the /media/volume_name/grassdata path.

2010/5/24, Glynn Clements <glynn at gclements.plus.com>:
>
> Hanlie Pretorius wrote:
>
>> I'm using GRASS on two machines in different locations (one Win XP,
>> the other Ubuntu 10.04), so I would like to keep my grassdata folder
>> on an external drive. However, when I try to run grass in Ubuntu using
>> the external hard drive (NTFS file system), I get the following error
>> as soon as I've selected the new data location and the GUI starts to
>> load:
>> -----
>> Execution failed: 'g.region -u -g -p -c'
>>
>> Details:
>> Error: MAPSET PERMANENT - permission denied
>> -----
>>
>> To run GRASS, I use the command 'sudo grass -wx'.
>>
>> GRASS works fine when I run it from the internal hard drive.
>>
>> Is there a way to get GRASS to work from the external drive?
>
> You must be the owner of the directory for the current mapset.
>
> If you're mounting a FAT filesystem, you can use the uid= mount option
> to set the ownership of the files. However, I don't know what the
> situation is with NTFS, as it has its own permission model.
>
> --
> Glynn Clements <glynn at gclements.plus.com>
>