Problem with Windows interfering with Linux permissions

linuxbear64 · 12-07-2018, 11:57 PM

I have a computer using Windows 8.1 and Linux Mint 19. Both systems read a partition that I have designated as /windows. One folder, /windows/fileshare, is giving me fits, because no matter how many times I click to unset read-only on that folder, the attributes do not actually get applied to that folder or any of the subfolders, leaving /windows/fileshare as a read-only file system. I store all my files in /windows/fileshare so I can use them when working in either OS.

jsbjsb001 · 12-08-2018, 12:28 AM

Quote:

Originally Posted by linuxbear64

I have a computer using Windows 8.1 and Linux Mint 19. Both systems read a partition that I have designated as /windows. One folder, /windows/fileshare, is giving me fits, because no matter how many times I click to unset read-only on that folder, the attributes do not actually get applied to that folder or any of the subfolders, leaving /windows/fileshare as a read-only file system. I store all my files in /windows/fileshare so I can use them when working in either OS.

So I take it this "partition" is a Linux partition, formatted with a Linux filesystem ? If so, you may want to do a filesystem check to make sure that there are no issues with it, causing the problem you describe. As I'd think it's not unheard of to share a partition with two different systems.

If it's mounted as read-only, then you really do need to check the filesystem, as in my experience, filesystems don't just mount read-only for no reason. Did you actually try mounting it as read-write ?

yancek · 12-08-2018, 06:54 AM

Quote:

Both systems read a partition that I have designated as /windows.

So is this a windows filesystem or a Linux filesystem. Necessary information. I'm guessing if you share it from windows and Linux that it is probably ntfs?? Which version of windows do you use? If you have 10, it defaults to hibernate/fast boot and every major windows update will turn this on and will mean that it is not accessible from Linux as a Linux OS will not mount a hibernated partition.

More info needed.

enorbet · 12-13-2018, 11:02 PM

IIRC NTFS extended attributes do not store permissions in the manner that any Linux filesystem does so they are incompatible at least regarding permissions although I thought that means defaulting to read-write, not read-only. So what file system is it?

ehartman · 12-14-2018, 05:23 AM

Quote:

Originally Posted by enorbet

IIRC NTFS extended attributes do not store permissions in the manner that any Linux filesystem does so they are incompatible at least regarding permissions although I thought that means defaulting to read-write, not read-only. So what file system is it?

And _if_ ntfs, are you using the kernel ntfs module (which, as far as I know, but it may have been changed in newer kernels, cannot WRITE reliably to ntfs mounted partitions) or the user-space ntfs-3g driver (and ditto entry in /etc/fstab).
From _my_ version of that package:

Code:

The NTFS-3G driver is an open source, freely available NTFS driver for Linux with read and write support.

Luckily I do not have got any ntfs partitions, but I do remember that when using the kernel module partitions were always mounted read-only.

linuxbear64 · 01-24-2019, 08:05 PM

The filesystem for /windows is NTFS. When I first installed Linux on its own partition, /windows was mounting as read-write, meaning that I could write to it from Windows or from Linux. Now it is mounting as read-only in Linux. And I don't know anything about the kernel ntfs module.

syg00 · 01-24-2019, 08:29 PM

The problem is probably Win8 is "hibernating" the filesystem. It does this if "fast-start" is enabled. You can force it to shutdown "completely" - a quick search should find how.