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Date: Tue, 3 Mar 2020 17:46:10 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: cat /proc/partitions shows only devices, not partitions
Message-ID: <20200303164610.GF4045@calimero.vinschen.de>
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On Mar  3 16:32, Hashim Aziz wrote:
> Yes, this was what I expected you meant by elevated shell. I tried that e=
arlier and got no luck (though I tried the link to the Cygwin terminal in m=
y start menu=20
> not a desktop shortcut), and I just tried again after attempting several =
permissions fixes but still no luck.
>=20
> The permissions fixed I tried were:
>=20
> - 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.=20

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

--=20
Corinna Vinschen
Cygwin Maintainer

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