<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>John,<br></div><div><br></div><div>Thanks, I knew the partition type was checked, but the type is always correct -- Linux ext2fs. And when I look at the partition table, there it is -- big as life.<br></div><div>--<br>Julie Haugh<br>Senior Design Engineer<br>greenHouse Computers, LLC // jfh at <a href="http://greenhousepc.com">greenhousepc.com</a> // greenHousePC on Skype</div><div><br><br></div>
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-------- Original Message --------<br>
Subject: Re: [Voyage-linux] grub 17 errors<br>
From: John Coltrane <<a href="mailto:johncoltrane39@googlemail.com">johncoltrane39@googlemail.com</a>><br>
Date: Sun, March 25, 2012 3:10 am<br>
To: <a href="mailto:voyage-linux@voyage.hk">voyage-linux@voyage.hk</a><br>
<br>
Hello Julie and list,<br> <br> there is a relative precise docu about all grub errors at <a target="_blank" class="moz-txt-link-freetext" href="http://www.gentoo.org/doc/en/grub-error-guide.xml">http://www.gentoo.org/doc/en/grub-error-guide.xml</a><br> <br> There are a lot docus with technical aspects of Linux on Gentoo's website, which are worth reading and can also be applied on nearly every other Linux distribution.<br> <br> Enjoy<br> <br> On 03/24/2012 03:35 PM, <a target="_blank" class="moz-txt-link-abbreviated" href="mailto:jfh@greenhousepc.com">jfh@greenhousepc.com</a> wrote: <blockquote cite="mid:20120324073555.8ef0e5b4a80cef441275a6330ffad77d.de78601233.wbe@email13.secureserver.net" type="cite"><span style="font-family: Verdana; color: rgb(0, 0, 0); font-size: 10pt;"> <div>Frank,<br> </div> <div><br> </div> <div>Neither of those is the problem. The ALIX.3D2 doesn't recognize a USB drive at boot time as a "BIOS Drive", so even if they had a USB drive plugged in, that wouldn't cause the problem.<br> </div> <div><br> </div> <div>Also, these systems boot multiple times with the same partition table and flash drive. Then, all of the sudden, they wind up with a grub 17 error. When I look at the partition table later, nothing has changed and nothing is wrong.</div> <div><br> </div> <div>What I need is something that can read the grub information from disk and determine why grub would fail. I've used debugfs to make sure the filesystem is in proper order, and various fdisk tools to make sure the partition table is in proper order, but there's no tool that can indicate what might be wrong with the data grub has written to the MBR.</div> <div><br> </div> <div>If someone has a map of which variables / data grub writes to where in the MBR, that would be very helpful. I'm trying to get some new hardware products developed (I have a nice DIN rail mountable board that can be used with a 9.6 volt NiMH battery pack as a UPS, and several other goodies that are likely less interesting) and trying to debug grub at the same time has finally reached my limit of "things I can do all at once."<br> </div> <div>--<br> Julie Haugh<br> Senior Design Engineer<br> greenHouse Computers, LLC // jfh at <a moz-do-not-send="true" target="_blank" href="http://greenhousepc.com">greenhousepc.com</a> // greenHousePC on Skype</div> <div><br> <br> </div> <blockquote id="replyBlockquote" webmail="1" style="border-left: 2px solid blue; margin-left: 8px; padding-left: 8px; font-size: 10pt; color: black; font-family: verdana;" mce_style="border-left: 2px solid blue; margin-left: 8px; padding-left: 8px; font-size:10pt; color:black; font-family:verdana;"> <div id="wmQuoteWrapper"> -------- Original Message --------<br> Subject: Re: [Voyage-linux] grub 17 errors<br> From: Frank Hoeflich <<a moz-do-not-send="true" target="_blank" href="mailto:frankhoeflich@yahoo.com">frankhoeflich@yahoo.com</a>><br> Date: Sat, March 24, 2012 1:47 am<br> To: <a moz-do-not-send="true" target="_blank" href="mailto:voyage-linux@voyage.hk">voyage-linux@voyage.hk</a>, <a moz-do-not-send="true" target="_blank" href="mailto:jfh@greenhousepc.com">jfh@greenhousepc.com</a><br> <br> <table border="0" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="font-family: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-size: inherit; line-height: inherit; font-size-adjust: inherit; font-stretch: inherit; -x-system-font: none;" mce_style="font: inherit;" valign="top">Julie: <div><br> </div> <div> Most of the Googling on this turns up partition table disk order errors:</div> <div><br> </div> <div><a moz-do-not-send="true" target="_blank" href="http://stringofthoughts.wordpress.com/2009/05/24/grub-error-17-debianubuntu">http://stringofthoughts.wordpress.com/2009/05/24/grub-error-17-debianubuntu</a>/</div> <div><a moz-do-not-send="true" target="_blank" href="http://iknowkungfoo.com/blog/index.cfm/2008/6/16/Stupid-solution-for-Grub-error-17">http://iknowkungfoo.com/blog/index.cfm/2008/6/16/Stupid-solution-for-Grub-error-17</a></div> <div><br> </div> <div>Note in the second one that people who have other drives plugged in sometimes get relief by disconnecting them. Any chance that in the field your units have USB drives plugged/unplugged into the Alix that werent/were present at the factory? Does simply reinstalling grub (regular, not debug version) do the trick as well?<br> <div><br> </div> <div>--Frank</div> <div><br> --- On <b>Fri, 3/23/12, <a moz-do-not-send="true" target="_blank" href="mailto:jfh@greenhousepc.com">jfh@greenhousepc.com</a> <i><<a moz-do-not-send="true" target="_blank" href="mailto:jfh@greenhousepc.com">jfh@greenhousepc.com</a>></i></b> wrote:<br> <blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;" mce_style="border-left: 2px solid #1010ff; margin-left: 5px; padding-left: 5px;">From: <a moz-do-not-send="true" target="_blank" href="mailto:jfh@greenhousepc.com">jfh@greenhousepc.com</a> <<a moz-do-not-send="true" target="_blank" href="mailto:jfh@greenhousepc.com">jfh@greenhousepc.com</a>><br> Subject: [Voyage-linux] grub 17 errors<br> To: <a moz-do-not-send="true" target="_blank" href="mailto:voyage-linux@voyage.hk">voyage-linux@voyage.hk</a><br> Date: Friday, March 23, 2012, 10:25 AM<br> <br> <div id="yiv1551372724"> <div><span mce_style="font-family: Verdana; color: #000000; font-size: 10pt;" style="font-family: Verdana; color: rgb(0, 0, 0); font-size: 10pt;"> <div>Greets,<br> </div> <div><br> </div> <div>I have a client who has been plagued by Grub 17 errors for the longest time. I'm using grub 0.97 ("legacy") on a version 0.6 version of Voyage. Please don't tell me to upgrade -- it takes months to verify that a change of that nature is going to be safe.<br> </div> <div><br> </div> <div>I've done everything I can to debug the problem, but the error path in fsys_ext2fs.c doesn't seem applicable -- the partition sizes have been verified to be correct, there are no errors from fsck (other than the expected ones because the ALIX.3D2 was power cycled just before it happened) indicating the superblock had a bad magic number.</div> <div><br> </div> <div>I'm not able to recreate the problem here, and updating the filesystem so it has a debugging version of grub fixes the problem.</div> <div><br> </div> <div>The systems are cloned from an image using "dd", but grub is then re-installed manually. All of the system I have in house, and all of the tests that I perform on systems I ship, are successful. When they receive the systems they perform the exact same test, which is also successful. It isn't until the systems are installed in the field that they fail.</div> <div><br> </div> <div>I'm using Kingston "Elite Pro" 8GB compact flash for the O/S image and application. Although it isn't "industrial" grade flash, the application was written so it minimizes the number of modified filesystem blocks as much as possible.</div> <div><br> </div> <div>Help?<br> </div> <div>--<br> Julie Haugh<br> Senior Design Engineer<br> greenHouse Computers, LLC // jfh at <a moz-do-not-send="true" rel="nofollow" target="_blank" href="http://greenhousepc.com" mce_href="http://greenhousepc.com">greenhousepc.com</a> // greenHousePC on Skype</div> </span></div> </div> <br> -----Inline Attachment Follows-----<br> <br> <div class="plainMail">_______________________________________________<br> Voyage-linux mailing list<br> <a moz-do-not-send="true" target="_blank" ymailto="mailto:Voyage-linux@list.voyage.hk" href="/mc/compose?to=Voyage-linux@list.voyage.hk" mce_href="https://mce_host/mc/compose?to=Voyage-linux@list.voyage.hk">Voyage-linux@list.voyage.hk</a><br> <a moz-do-not-send="true" href="http://list.voyage.hk/mailman/listinfo/voyage-linux" mce_href="http://list.voyage.hk/mailman/listinfo/voyage-linux" target="_blank">http://list.voyage.hk/mailman/listinfo/voyage-linux</a><br> </div> </blockquote> </div> </div> </td> </tr> </tbody> </table> </div> </blockquote> </span> <pre wrap=""><fieldset class="mimeAttachmentHeader"></fieldset>
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