[GRASS-user] Change gisdbase in GRASS 8.x

[Wolf Bergenheim]

Hi Tom,

1) To point GRASS to the GISDBASE on the external drive, simply start GRASS
once with

grass /external_ntfs_mount/some_location/mapset

Meaning that you give as argument the path to a mapset that you want to use
in the GISDBASE on the external btfs drive. GRASS will remember this then
is subsequent runs so you only will need to do it once.

2) For the external NTFS drive and permissions. How do you mount it? It
does seem to me that the user mapping is incorrect if everything is mapped
to the root user. Either you can use the options to mount it as your user
(at which point it will work on linux, but I don't know what windows user
they will be mapped to (probably the administrator). Alternatively you can
provide a mapping file which maps your linux username to a windows user id
as shown for example here:
https://linux.die.net/man/8/mount.ntfs-3g

For ease of use in the long term, I'd probably go with the default mapping
file. Hope this helps!

*-- *
* ^.___*

*( ,__// / Wolf Bergenheim*



On Mon, 29 Aug 2022 at 17:39, Thomas Adams <tea3rd at gmail.com> wrote:

> Hi all,
>
> I recently started using GRASS 8.1 on an Ubuntu 22.04 laptop. Although I
> have a 2TB solid state  internal drive, I want to keep all my GRASS files
> on an external NTFS drive. Somehow all of the files have root ownership,
> including all my GRASS files copied on to it from my Mac. This is causing
> all sorts of problems, including not being able to access any of the data
> within GRASS due to permissions. After installing GRASS 8.1 on my Ubuntu
> computer, my default GRASS database is
>
> GISDBASE: /home/teaiii/grassdata
>
> how can I either:
>
> (1) point to the grass data on my external drive as the (working) default
> GISDBASE or
> (2) access the data from the default GISDBASE -- permissions don't seem to
> allow this even though all files are universally rw
>
> Best,
> Tom
>
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