Changing Sharing & Permissions on a Mac OS Extended External Drive

I'm using ChronoSync to back up to 4 external hard drives. Three of them were formatted as Mac OS Extended (Journaled), while the 4th is not journaled. On the journaled HD's, I can change the privileges for me, staff and everyone in Get Info; I can also check or uncheck "Ignore ownership on this volume" on 2 of them. My Time Machine volume doesn't have the option to ignore ownership. My issue is that changing privileges on the Mac OS Extended volume is grayed out, and the box to ignore ownership is checked. Therefore, Chronosync cannot write to the volume.
I could try to use chmod in Terminal to change permissions on this volume, but I don't know the syntax to get to a mounted volume (I know they're listed in /Volumes).
So I have two questions:
1. Does this issue indicate a substantial difference between journaled and not-journaled Mac OS file systems?
2. What is the syntax in Terminal to change the permissions on the volume (name is Video Backup) so that I can at least uncheck the "Ignore ownership on this volume"?
I apologize if this has been asked and answered elsewhere on this forum, but I wasn't able to locate such a discussion.
Thanks,
Nick
Message was edited by: nickditoro

Hi mackjack,
The commands Niel posted were to regain access to a drive not to change existing permissions. Nonetheless, I executed them so at least I know the syntax to use in order to get to an external hard drive (something I hadn't known before), so thanks!!! I might try chmod 770
Update:
Now that I know the basic syntax (thanks to you) I can now change permissions for any user I like. Chronosync is able to synchronize to the drive.
Thanks!!
Nick
Message was edited by: nickditoro

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PaulHand wrote:
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