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Date: Mon, 15 Nov 2010 17:10:46 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: /dev/sda2 - Bad file descriptor error with mkfs.ext4 on cygwin
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On Nov  6 10:08, Phani Deepak Parasuramuni wrote:
> Hi,
> 
> I am using Cygwin 1.7.7  on Windows 7.
> 
> I have installed e2fsprogs-1.41.12 on cygwin.
> 
> I have carved out a 10G partition in my harddisk using windows disk manager.
> 
> My 'cat /proc/partitions' command also lists out my sda2 partition, so
> I am sure that there is sda2 partition with 10G
> 
> $ cat /proc/partitions
> major minor  #blocks  name
>     8     0 312571224 sda
>     8     1 302083072 sda1
>     8     2  10484736 sda2
> 
> Now, I am trying to use mkfs.ext4 to create an ext4 file system on
> this partition.
> 
> This is the command I am using:
> $/usr/sbin/mkfs.ext4 /dev/sda2
> 
> it fails with error message;
> "mkfs.ext4: Bad file descriptor while trying to determine filesystem size"
> 
> Any idea why it is happening so?

UAC?  You need to run an elevated shell to be able to write to disk
partitions.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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