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 Forum index » House Training » Beginners Help ( Start Here)
Kernel panic after "Performing switch root..."
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Antipodal

Joined: 26 Mar 2009
Posts: 137
Location: The other side of the world

PostPosted: Tue 09 Mar 2010, 18:24    Post_subject: Summarizing for Béèm...
Sub_title: ...and reflecting on a statement.
 

Béèm: I really appreciate your participation in this thread. Smile
Béèm wrote:
You had a CD/DVD: from which you could boot puppy.
Yes, I had a DVD from which I could boot puppy
Béèm wrote:
Is this CD/DVD a R or a RW type?
It is a DVD+R
Béèm wrote:
If RW did you accidentally rewrite it?
I never tried to write on it.
Béèm wrote:
In any case the case (upper case or capital) of the file names you showed in red are not good. That should be lower case.

As a noobie I must accept that the file names that are showed in red are not good for booting Puppy because they are written in upper case.
But I must remind you that this is the way Windows Explorer showed them to me.
I think it is very unlikely they are written in that way in my Live DVD
In my Live DVD they are most probably written in lower case.
If that were not so...
How did my Puppy Live DVD work perfectly for me for hundred or thousand of times since I received it as a present on March 22 2009 till I had the bad idea of clicking on Eric S. Raymonds link on December 27 2009?

I have read in the forum (http://www.murga-linux.com/puppy/viewtopic.php?t=48596)
Quote:
converting linux files from lower to upper case apparently is a Windows explorer characteristic, however that would not affect the files on the CD
From my small experience I think that statement might be true.
Don't you?

Hoping to be hearing from you soon
Best regards. Smile
Antipodal
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Béèm


Joined: 21 Nov 2006
Posts: 11782
Location: Brussels IBM Thinkpad R40, 256MB, 20GB, WiFi ipw2100. Frugal Lin'N'Win

PostPosted: Tue 09 Mar 2010, 20:31    Post_subject:  

This is from your initial post
Antipodal wrote:
The last time I tried to boot it in that way, after reading in the screen
“Loading the ‘pup-412.sys’ main file…copying to ram”
I could read
“Setting up the layered file system….. done”
And then
“Performing ‘switch root to the layered file system…Kernel panic – Not syncing: Attempted to kill init”
And the booting process froze there…
You write in there pup-412.sys Is this a typo? As normally it should be pup_412.sfs
In the thread you referenced in in your last post, I see indeed the comment about the uppercase. I can't remember if I had that also in Windows.
Normally it is my experience that Windows don't change the case of a file name, but I can't try this right now.

In that same thread there is a reference to the Lin'N'Win method.
Did you try that?
If not, maybe worth trying. I use it for years now and don't make a CD anymore.

Does that CD/DVD boot on another PC?
Does it boot correctly?

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Antipodal

Joined: 26 Mar 2009
Posts: 137
Location: The other side of the world

PostPosted: Wed 10 Mar 2010, 13:07    Post_subject:  Béèm: Youre message was very useful
Sub_title: Writing pup-412.sys in my initial post was a typo.
 

I checked some notes and they show I scribbled pup_412.sfs when the failures occurred. So I must have made a typographic mistake when I wrote pup-412.sys in my initial post.

I want to point out two things:
1) Thank you for calling my attention on the Lin'N'Win method. It seems very interesting and I shall ponder over it as soon as I can.
2) I haven’t tried booting another computer with my CD/DVD. So I'll try that.
Both and other things will probably keep me occupied for some days but as soon as I have time and things clearer I shall contact you by means of the forum.

Thank you again
Best regards
Antipodal
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Antipodal

Joined: 26 Mar 2009
Posts: 137
Location: The other side of the world

PostPosted: Sat 13 Nov 2010, 11:09    Post_subject: Keeping the community updated
Sub_title: Adding new facts to my first post
 

When on March 10, 2010 I sent my last message to the forum I thought that in a few days or weeks I would be sending another message to it.

However, for different reasons, 8 months have elapsed since then and, though things are not as foggy as at that time, I still have no good explanation for why the Puppy Linux Live DVD I received as a gift has stopped working on my desktop.

During these months the most important facts I have found out are:

1) The same Live DVD boots on a friend’s notebook.
2) I have not been able to obtain a personalized attention from the manufacturers of my DVD/ CD rewritable drive so as to ask them for help in checking if my drive was working correctly.
3) I have received a magnificent attention by the manufacturers of the software I use to manage my DVD/ CD rewritable drive who, after asking me a lot of things, have assured me that the Live DVD that has stopped working on my PC is a multisession disk and suggested me to update my DVD/ CD rewritable drive's firmware in case it were not the last released.
4) I have updated my DVD/ CD rewritable drive's firmware but that hasn't changed anything.
5) I have replaced my DVD/ CD rewritable drive with a sparkling new one (different brand) but that hasn't worked either.

Regarding Lin’N’Win, I found it very interesting but I have not dared to keep Windows XP and Puppy in the same hard disk of a computer that, for reasons unknown to me, has ceased to work in a logical manner.
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Shep

Joined: 08 Nov 2008
Posts: 851
Location: GIRT-BY-SEA

PostPosted: Mon 15 Nov 2010, 03:52    Post_subject: Re: Kernel panic after "Performing switch root..."
Sub_title: Booting 4.1.2 from DVD
 

Antipodal wrote:
In that paragraph "alt.2600" is a hyperlink. And just because I became curious about what the alt.2600 newsgroup was I clicked on it.
Since then my computer has behaved as if it were crazy.

I used to read that newsgroup on and off. If you opened only text messages I doubt that you would have picked up any malicious linux code there, but of course one never knows.

Quote:
“Performing ‘switch root to the layered file system…Kernel panic – Not syncing: Attempted to kill init”
And the booting process froze there…

When ever I have got this message, it has invariably been a bad CD. So I burn another and the problem vanishes. (Explanation: I use CD-RW & DVD-RW and find they have a limited lifetime: in less than 6 months they can suffer data rot. As you are using CD-R this doesn't fit your situation, but I'd still suggest that you burn a new CD before exploring any deeper. (Perhaps if you run an md5sum check on the CD a few dozen couple of times, there may be an inconsistency, but maybe not.) Can you download the iso file and burn a new CD? If not, I'd try just making a copy of the CD. There might be a one in a million co-incidence of tiny scratches at critical points on your old CD.

Sorry about the initial underwhelming lack of help. Shocked Shocked This forum is usually very helpful but now and then a post can get overlooked. Hopefully, future requests for help will receive prompt assistance.

I recall reading how data on CD-Rs can start to rot in as little as 12 months. It is easily overlooked on music or photo archives, when a tiny blip goes unnoticed, but on critical data files, it can be a total showstopper! A rule of thumb I noted is that CDs with a gold-coloured surface generally preserve their data integrity longer.
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Antipodal

Joined: 26 Mar 2009
Posts: 137
Location: The other side of the world

PostPosted: Mon 15 Nov 2010, 23:20    Post_subject:  Thanking Shep & explaining some facts
Sub_title: Thanking Shep & explaining some facts
 

Thank you for your message, Shep
You wrote:
Antipodal wrote:
In that paragraph, "alt.2600" is a hyperlink. And just because I became curious about what the alt.2600 newsgroup was I clicked on it.
Since then my computer has behaved as if it were crazy.

I used to read that newsgroup on and off. If you opened only text messages I doubt that you would have picked up any malicious linux code there, but of course one never knows.

Please, remember I'm almost a computer illiterate.
I clicked on that link while I was using my XP OS and though I'm not sure if you can pick up a malicious linux code doing that, I' have no doubts about having picked up malicious MS W XP code there.
You wrote:
Quote:
“Performing ‘switch root to the layered file system…Kernel panic – Not syncing: Attempted to kill init”
And the booting process froze there…

When ever I have got this message, it has invariably been a bad CD. So I burn another and the problem vanishes. (Explanation: I use CD-RW & DVD-RW and find they have a limited lifetime: in less than 6 months they can suffer data rot. As you are using CD-R this doesn't fit your situation, but I'd still suggest that you burn a new CD before exploring any deeper. (Perhaps if you run an md5sum check on the CD a few dozen couple of times, there may be an inconsistency, but maybe not.) Can you download the iso file and burn a new CD? If not, I'd try just making a copy of the CD. There might be a one in a million co-incidence of tiny scratches at critical points on your old CD.

And you wrote:
I recall reading how data on CD-Rs can start to rot in as little as 12 months. It is easily overlooked on music or photo archives, when a tiny blip goes unnoticed, but on critical data files, it can be a total showstopper! A rule of thumb I noted is that CDs with a gold-coloured surface generally preserve their data integrity longer.


Regarding these parts of your message, I appreciate them very much, and I apologize, because due to my computer illiteracy I shall have to take some time and ponder over them before deciding my next step.

You wrote:
Sorry about the initial underwhelming lack of help. Shocked Shocked This forum is usually very helpful but now and then a post can get overlooked. Hopefully, future requests for help will receive prompt assistance.

No problem. The forum cannot be blamed. I probably should have insisted more on the subject

_________________
Slacko 533 Live CD_P4 3Ghz_ASUS P5G41T-M LX3_2G RAM_DVD Write
No internal HDD
Never saved files related to Puppy's configuration
I sometimes save personal stuff on small flash stick or access via USB data on old big internal NTFS formated SATA HDD
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Shep

Joined: 08 Nov 2008
Posts: 851
Location: GIRT-BY-SEA

PostPosted: Tue 16 Nov 2010, 00:31    Post_subject:  

Maybe the very first suggestion should have been to clean your CD. Perhaps there is a spec of dust, marker ink, bubble gum, greasy fingerprint, cockroach frass, mould, gravy, cheese, custard, tomato sauce, etc., etc., Laughing Laughing that is interfering with the read.

To determine the md5sum, open a terminal MENU >UTILITY> RXVT or similar
and type: md5sum /dev/cdrom
or whatever your CD drive is called.

I think you said that other distros run okay, so that sort of rules out loose RAM cards.
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jyore


Joined: 06 Nov 2010
Posts: 43

PostPosted: Tue 16 Nov 2010, 00:43    Post_subject:  

Which versions on Puppy have you tried? I have had trouble booting Puppy on some i586 processors(which all Pentiums are, hints the pente-) for whatever reason (probably something in the kernel is optimized to i686 for some reason). When I had this problem, I have had it fail with the same error you experienced "failure to switch-root..." and it went into Kernel Panic.

Puppy 4.3.0 I do know for sure works on a i586 processor, maybe try that?
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Shep

Joined: 08 Nov 2008
Posts: 851
Location: GIRT-BY-SEA

PostPosted: Tue 16 Nov 2010, 07:37    Post_subject:  

jyore wrote:
Which versions on Puppy have you tried?

OP's story is that the live DVD used to boot on that 'puter, but for no known reason it stopped working. Nothing was changed.
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jyore


Joined: 06 Nov 2010
Posts: 43

PostPosted: Tue 16 Nov 2010, 13:11    Post_subject:  

Ah, ignore that last bit then Razz

Come to think of it, I think I was thinking of a different error anyway.

When I had the switch-root stuff, I think there was some corruption of the puppy save file. I was doing a USB install, and it seemed to happen when I used the "Save to Partition" option rather than the "Save to File" option.

Not sure if his problem is going to be the same thing, however...
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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Tue 16 Nov 2010, 15:37    Post_subject:  

I should not really suggest things because I know too little but due to experience the OP should try to boot with pfix=ram.

He should stop the booting sequence by hitting the right thing .

Sadly I don't remember but Beem and others maybe remember.

Booting with pfix=ram allow him to find out if the pupsave files is the cause of the change of behavior.

I would recommend to try the Lin'nwin method.

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Shep

Joined: 08 Nov 2008
Posts: 851
Location: GIRT-BY-SEA

PostPosted: Tue 16 Nov 2010, 19:54    Post_subject:  

nooby wrote:
the OP should try to boot with pfix=ram.

That's a good idea, nooby. You're right, a corrupted .2fs will cause that too, I now recall. Jyore similarly agrees.

So, antipodal, you should watch the start up and when prompted hit <F2> key then type puppy pfix=ram to cause puppy to start anew without loading your personal save file. If this works, get back to us here. And if it doesn't, also come back and let us know. Cool
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Antipodal

Joined: 26 Mar 2009
Posts: 137
Location: The other side of the world

PostPosted: Mon 22 Nov 2010, 10:49    Post_subject: Thank you for your help Shep,nooby & jyore!!
Sub_title: Ths is what happened after I followed your advice.
 

I regret having taken so long to answer.

In the attachment I roughly describe what occurred when I first tried to boot my desktop with the same Puppy Linux DVD that worked in my computer and works on a friend's notebook
Booting with Puppy Live DVD.GIF
 Description   
 Filesize   51.79 KB
 Viewed   871 Time(s)

Booting with Puppy Live DVD.GIF


_________________
Slacko 533 Live CD_P4 3Ghz_ASUS P5G41T-M LX3_2G RAM_DVD Write
No internal HDD
Never saved files related to Puppy's configuration
I sometimes save personal stuff on small flash stick or access via USB data on old big internal NTFS formated SATA HDD
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noryb009

Joined: 20 Mar 2010
Posts: 539

PostPosted: Mon 22 Nov 2010, 17:45    Post_subject:  

Ok, so it's not picking up the DVD.
1) Is the CD drive able to play that type of DVD? (I did this once...)
2) Do you have the BIOS changed for DVD first?
3) Did you try selecting the boot medium? (F8 on my computer)
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Antipodal

Joined: 26 Mar 2009
Posts: 137
Location: The other side of the world

PostPosted: Mon 22 Nov 2010, 18:24    Post_subject: Thank you for your time noryb009
Sub_title: My answers to your questions
 

To question Nº1
As I have said in some of my previous posts this DVD has worked perfectly in this computer during 9 months and it still works in a friend’s notebook.
Because I was told that this problem could have been caused because the driver’s firmware was outdated, I updated it some time ago but the problem continued.
Because I was told that this problem could happen if the drive was not working correctly, I changed the old drive for a brand new one... and I didn’t solve the problem.

To question Nº2
Yes

To question Nº3
I don’t understand what you mean by that, so I’ll try to enquire what that is before answering this question.
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