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Date: Tue, 3 May 2005 19:45:51 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: [Fwd: Re: impossible to restore MBR using dd]
Message-ID: <20050503174551.GA30980@calimero.vinschen.de>
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References: <4277B099 DOT 2050609 AT echotech DOT ch>
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On May  3 19:10, Matthias Bertschy wrote:
> Maybe I should recall you that on Linux, we can safely write 446 bytes 
> blocks to a raw device. Indeed, the command dd if=boot.MBR of=/dev/sda 
> bs=446 count=1 works under Linux.
> I also don't understand why you are using NTSF raw devices to access the 
> MBR... after all the MBR isn't formatted at all !

What is an "NTFS raw device" for you?

> I think I will fill a bug report for the dd command under Cygwin. Could 
> you point me where to do it?

There's no point in that.  I removed the buffering in writing to raw
devices last year because the buffering created more problems than it
helped when it came to writing multiple-volume archives to, e.g, floppy.
Windows calls OTOH only support writes to raw devices in module blocksize
chunks.  I don't think that's too hard a restriction.


Corinna

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

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