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From:	Hashim Aziz <hashaziz AT hotmail DOT com>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	Re: cat /proc/partitions shows only devices, not partitions
Thread-Topic:	cat /proc/partitions shows only devices, not partitions
Thread-Index:	AQHV9iniLPfLzwsoSkaVkxCKr8Qg0Q==
Date:	Mon, 9 Mar 2020 15:47:46 +0000
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I see. Do you know how I would go about resolving this, as I am using an Administrator account and have never run into any other issues reading, writing or otherwise making changes to those drives.

Hashim

________________________________
From: cygwin-owner AT cygwin DOT com on behalf of Corinna Vinschen
Sent: Tuesday, March 03, 2020 4:46 PM
To: cygwin AT cygwin DOT com
Subject: Re: cat /proc/partitions shows only devices, not partitions

On Mar  3 16:32, Hashim Aziz wrote:
> Yes, this was what I expected you meant by elevated shell. I tried that earlier and got no luck (though I tried the link to the Cygwin terminal in my start menu
> not a desktop shortcut), and I just tried again after attempting several permissions fixes but still no luck.
>
> The permissions fixed I tried were:
>
> - Right-clicking and deselecting Read-Only on the cygwin64 folder
> - Resetting permissions with the CMD command: icacls c:\cygwin64 /reset /t /l /c
> - Taking control of the Cygwin folder with the following command (itself run from an elevated window):
> [...]

When I was talking about permissions, I was talking about permissions on
the native Windows devices, not any permissions on Cygwin files.

The strace output shows that you don't have permissions to call
DeviceIoControl(IOCTL_DISK_GET_PARTITION_INFO) or
DeviceIoControl(IOCTL_DISK_GET_PARTITION_INFO_EX) on the devices
representing the partitions in the native NT device namespace, i.e.,
\Device\Harddisk0\Partition0, etc.


Corinna

--
Corinna Vinschen
Cygwin Maintainer
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