#1 2018-01-08 15:31:54

berniz95

Member

From: Vauréal France

Registered: 2016-02-23

Posts: 52

Permissions between OSes on an external DD

Hello,
My colleague and I alternatively use a same external HDD (a 1To Transcend). She runs Windows 7 and I run Windows 7 and BL Hydrogen. Since the last time I plugged the HDD on my BL, she is refused permission to create new folders or files : she is asked for a password I don't know of. De facto all folders on the drive have permission drwx------ and she doesn't log with the same id or group as I. I tried

sudo chmod -R a+rw .

but it doesn't change anything.
I have thunar-volman installed and volumes management is enabled.
What could be going wrong ?

Last edited by berniz95 (2018-01-11 09:25:16)

vinzv

Member

Registered: 2017-09-12

Posts: 186

Website

Re: Permissions between OSes on an external DD

Hi,

how is the external HDD formatted? vfat or something Linux-native like ext?

berniz95

Member

From: Vauréal France

Registered: 2016-02-23

Posts: 52

Re: Permissions between OSes on an external DD

It's an NTFS and not formatted via Unix I think (factory formatted).

The problem occurs on MacOSes X (at least on two computers). On this system the drive appears "read only".

I wish I could give rw permission to the whole world on this device. Why can't I ? I don't see any malicious hardware switch on it (like there used to be on diskettes and memory cards...)

(edit) according to this :
http://www.commentcamarche.net/faq/4592 … os-ou-os-x
MacOS X can mount NTFS disks only read-only.
There needs to be installed a piece of software such as Paragon NTFS for Mac (commercial) or Mounty for NTFS (free) on the Mac in order to write on an NTFS formatted drive.
FAT32 is supported but limited to 4Go maximum file size.
Another way is to format the drive in ExFAT but not all physical drives support that format.
So obviously, my problem has nothing to do with Linux (but people who use an external DD on different systems can be interested )

I might edit this post again if/when I find a solution...

Last edited by berniz95 (2018-01-11 11:16:23)