update ollama post

_posts/2025-01-04-ollama-model-storage.md

@@ -9,9 +9,20 @@ I then realized that the default model storage location is `/usr/share`.
 This path is mounted on my OS disk and there is not much storage there so I wanted the downloaded models to be stored elsewhere.
 It turns out this is a [common request](https://github.com/ollama/ollama/issues/680){:target="_blank"}
 and it can be done using an `OLLAMA_MODELS` environment variable.
-There are some [docs](https://github.com/ollama/ollama/blob/main/docs/faq.md#how-do-i-configure-ollama-server){:target="_blank"} on how to do it, but it took me a few tries.
+The docs cover the pieces,
+ * [where models are stored](https://github.com/ollama/ollama/blob/main/docs/faq.md#where-are-models-stored){:target="_blank"}
+ * [configuring ollama service](https://github.com/ollama/ollama/blob/main/docs/faq.md#how-do-i-configure-ollama-server){:target="_blank"} 
+
+ but it took me a few tries.
 
-I have a 2TB data disk mounted at `/mnt/sdb`. I made an `ollama` directory there, gave it 755 permissions and made `ollama` the owner. 
+I have a 2TB data disk mounted at `/mnt/sdb`.
+I made that direcory executable by `others` and then 
+made an `ollama` directory and gave it
+ * read, write, and execute permissions for user owner
+ * read and execute permissions for group owner and others
+
+with the octal value 755 (read more about linux permissions [here](https://www.redhat.com/en/blog/linux-file-permissions-explained){:target="_blank"}).
+I then made `ollama` the user and group owner of that directory. 
 
 ``` bash
 sudo chmod o+x /mnt/sdb
@@ -46,7 +57,7 @@ sudo systemctl daemon-reload
 sudo systemctl restart ollama
 ```
 
-Now new `ollama run` or `ollama pull` commands will use the `/mnd/sdb/ollama` directory for storage.
+Now new `ollama run` or `ollama pull` commands will use the `/mnt/sdb/ollama` directory for storage.
 
 Also very helpful, you can check out the ollama service logs using,