Good evening KK,

I have a question concerning the CF cards again. Do you usually use the SanDisk 
Original CF cards or the SanDisk Ultra CF cards? I ask this because the 
original CF cards are very old product and extremely hard to find.

Thank you for your help,

Heming
________________________________________
From: yap...@gmail.com [yap...@gmail.com] on behalf of kk yap 
[yap...@stanford.edu]
Sent: March 3, 2012 20:01
To: Heming Wen
Cc: openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] PC Engine AP booting errors for OpenRoads

Hi Heming,

Sorry for the late response.

The difference in size of the CF card should not make a difference,
esp. if you are using a larger card.  Expanding the filesystem to make
use of the 4GB space should be fairly simple too---a few commands with
fdisk which Google would remember better than I do.

As for the error, can I recommend that you try to use a SanDisk CF
card?  There is something about CF card and Grub's boot sector that
SanDisk seems to have got right.

http://lists.soekris.com/pipermail/soekris-tech/2008-October/015084.html

However, I cannot confirm that this is the problem, so just get one and try.

Regards
KK

On 27 February 2012 13:35, Heming Wen <heming....@mail.mcgill.ca> wrote:
> Greetings,
>
> I am trying to run the image provided on the page: 
> http://www.openflow.org/wk/index.php/OpenFlow_AP_with_PC_Engine
> Our lab has bought the same hardware as suggested by the tutorial. However, 
> we are using 4GB Kingston compact flash drives instead of the 2GB one. After 
> flashing the SwanWifi.img image on the CF card and trying to boot from it, I 
> get the infamous GRUB Error 17 during bootloading.
>
> I suspected whether the fact that I'm using 4GB CF card instead of 2GB makes 
> a big difference. I also suspected whether the filesystem partitions has been 
> properly installed or the disk properly formatted. When I use "fdisk -l" to 
> peek into the content of the CF (through another PC with RHEL), I see four 
> drive partitions, with a /boot/grub directory present on two of them. All the 
> partitions types are "Linux". I tried playing around with the menu.lst and 
> the device.map files but the error persists.
>
> Also, is there any former steps that I have to do to flash the SwanWifi image 
> into the CF card? I just assumed it was a regular image and used 'gunzip' and 
> 'dd' commands to flash it. The tutorial site already assumes that the image 
> is properly flashed on the CF card, which in this case I believe has failed.
>
> Did anyone encounter similar issues before or have any good suggestions?
>
> Thank you in advance for your support,
>
> Heming Wen
> McGill University
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> openflow-discuss@lists.stanford.edu
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