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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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 Posted: Tue 27 Jul 2010, 04:50 Post subject:
 BankPup (SOLVED)
Subject description: USB install - no save during or end of session |
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Following on from and not hijacking
http://www.murga-linux.com/puppy/viewtopic.php?t=57618
I want to frugal install Puppy 3.01 - I have grown rather fond of it - to a USB drive and be able to:
1. Select either the full HD install or the frugal install during boot
2. Use the frugal install without saves during the session and save only at the end if I so choose - the method of doing this has been discussed in the above and other threads so should be 'easily' implemented.
I have copied initrd.gz, pup_301.sfs, vmlinuz and zdrv_301.sfs to the USB drive.
What do I need to do to achieve "1" above?
Last edited by Mercedes350se on Mon 02 Aug 2010, 03:10; edited 1 time in total
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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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| Posted: Thu 29 Jul 2010, 04:34 Post subject:
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Due to the lack of response I have decided to experiment.
1. Created 4 partitions on a 4GB USB stick
2. Formatted them and made the first partition bootable
3. From LiveCD and using PUI installed to sdb1 (it is the 2nd USB stick in the computer - I assume frugal install as the pop up box mentioned only the 4 files that I would expect for a frugal install
4. Modified menu.lst to
# timeout 5
color light-gray/blue black/light-gray
# End GRUB global section
# Linux bootable partition config begins
title XXXX Puppy
root (hd0,0)
kernel /boot/vmlinuz root=/dev/hda1 ro vga=normal
# Linux bootable partition config ends
# Linux bootable partition config begins
title BANKPUP
root (hd0,0)
kernel /boot/vmlinuz root=/dev/sdb1 ro vga=normal pmedia=usbflash
The problem is that boot starts and then I get the message:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0)
What to do?
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Brown Mouse
Joined: 09 Jun 2009
Posts: 435
Location: Tenerife Canary Islands
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| Posted: Thu 29 Jul 2010, 15:55 Post subject:
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| Mercedes350se wrote: | Due to the lack of response I have decided to experiment.
1. Created 4 partitions on a 4GB USB stick
2. Formatted them and made the first partition bootable
3. From LiveCD and using PUI installed to sdb1 (it is the 2nd USB stick in the computer - I assume frugal install as the pop up box mentioned only the 4 files that I would expect for a frugal install
4. Modified menu.lst to
# timeout 5
color light-gray/blue black/light-gray
# End GRUB global section
# Linux bootable partition config begins
title XXXX Puppy
root (hd0,0)
kernel /boot/vmlinuz root=/dev/hda1 ro vga=normal
# Linux bootable partition config ends
# Linux bootable partition config begins
title BANKPUP
root (hd0,0)
kernel /boot/vmlinuz root=/dev/sdb1 ro vga=normal pmedia=usbflash
The problem is that boot starts and then I get the message:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0)
What to do? |
Perhaps it is pointing to the wrong hd.
Should it possibly be (hd1,0)
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rcrsn51
Joined: 05 Sep 2006
Posts: 7758
Location: Stratford, Ontario
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| Posted: Thu 29 Jul 2010, 16:08 Post subject:
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| Quote: |
title XXXX Puppy
root (hd0,0)
kernel /boot/vmlinuz root=/dev/hda1 ro vga=normal
title BANKPUP
root (hd0,0)
kernel /boot/vmlinuz root=/dev/sdb1 ro vga=normal pmedia=usbflash
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It sounds like you currently have a full install of Puppy on your hard drive. In addition to the file vmlinuz that is currently in your /boot folder, add the file initrd.gz.
Assuming that you have the same Puppy version on the flash drive as on your hard drive, try the following menu.lst entry.
| Code: | title BANKPUP
root (hd0,0)
kernel /boot/vmlinuz pmedia=usbflash
initrd /boot/initrd.gz
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rhadon
Joined: 27 Mar 2008
Posts: 1228
Location: Germany
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| Posted: Thu 29 Jul 2010, 17:47 Post subject:
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I always get this wrong kind of entry in the menu.lst if I install frugal Puppy, Grub and MBR to a usb stick. I would change the menu.lst as rcrsn51 mentioned. For frugal install usually the puppy files are not in the folder /boot. So maybe you must change the paths. Perhaps you also have to change as Brown Mouse wrote.
hd0,0 means the first drive (your hd) and the first partition.
hd1,3 e.g. means the second drive and the fourth partition.
~ Rolf
_________________
Ich verwende "frugal", und das ist gut so. 
Raspberry Pi without Puppy? No, thanks.
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rcrsn51
Joined: 05 Sep 2006
Posts: 7758
Location: Stratford, Ontario
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| Posted: Thu 29 Jul 2010, 18:50 Post subject:
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| rhadon wrote: | | For frugal install usually the puppy files are not in the folder /boot. So maybe you must change the paths. Perhaps you also have to change as Brown Mouse wrote. |
You can put the boot files anywhere you want as long as you specify the correct paths.
Since Mercedes350se already has her vmlinuz file in /boot, it's easiest to put the initrd.gz file there too. It is required because her USB install is frugal. (Full installs on a USB device are only possible after considerable modifications.)
Since those two files are being read off the hard drive, the root (hd0,0) command is correct.
On some machines, it might be possible to use root (hd1,0) and put all the files on the USB drive. But that will only work if the BIOS detects the USB device at bootup as a secondary hard drive. In which case, you might as well boot directly off the USB device and leave your hard drive GRUB setup unchanged.
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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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| Posted: Fri 30 Jul 2010, 00:27 Post subject:
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Thank you all for your suggestions.
What I have is both vmlinuz and initrd.gz in /boot on the USB stick sdb1
root (hd0,0) is correct. Anything else does not work. Well it does not lead to "Uncompressing ... etc"
If I add
initrd /boot/initrd.gz
then it (initrd /boot/initrd.gz) is printed on the screen and then
Error ?? - File not found message
(I did not take particular note of the number). initrd.gz is definitely on sdb1 in /boot so I am confused.
I have spent several hours scouring the net but to no avail - frustration is beginning to set in!
Determination is still as strong as ever though.
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rhadon
Joined: 27 Mar 2008
Posts: 1228
Location: Germany
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| Posted: Fri 30 Jul 2010, 04:01 Post subject:
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Try to copy initrd.gz from usb stick to /boot/ of your hd, please. As I understand, hd0,0 points to your hd. There Puppy searches for this files now. This should work.
If you are curious enough you can go to the grub command line by hitting the c key during grub meu (as declared at the bottom of the menu) and type:
| Code: | | find /boot/initrd.gz |
This should return all drives where grub can find the file. With this command you can find out easily the correct drive and path, typos and if grub can detect your usb or not. Back with esc.
@rcrsn51
It seems to me that you have had a better point of view about the problems of Mercedes350se . Using vmlinuz and initrd from hd and the rest from usb works as long as you use the same puppy. It fails if you want to install another one. That was the reason I preferred using hd1,0 (if it's detected by grub of course).
btw. there is a difference between booting completely from usb and booting from usb via grub menu of hd. With my Gericom I can't boot from usb directly (only in Superfloppy mode but that's another story) but I can boot from usb if I use the grub menu of my hd.
Please correct me if I'm wrong.
~ Rolf
_________________
Ich verwende "frugal", und das ist gut so.
Raspberry Pi without Puppy? No, thanks.
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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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| Posted: Fri 30 Jul 2010, 04:32 Post subject:
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Two things.
1. Tried rhadon's suggestion. File not found. Very interesting because I know there is no initrd.gz on the hd but there definitely is on sdb1. Easy to check using pfind.
2. The closest I have come to a solution is a reference to the fact that the kernel is looking for somewhere to place the files but the USB drive is too slow - hence kernel panic.
Questions.
1. Does this sound plausible?
2. If so how do you slow down the boot process so the USB stick can be ready?
3. rhadon What is the content of your menu.lst? You say that you can boot from USB using the grub menu on the hd. This is exactly what I am trying to do.
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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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| Posted: Fri 30 Jul 2010, 04:34 Post subject:
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Two things.
1. Tried rhadon's suggestion. File not found. Very interesting because I know there is no initrd.gz on the hd but there definitely is on sdb1. Easy to check using pfind.
2. The closest I have come to a solution is a reference to the fact that the kernel is looking for somewhere to place the files but the USB drive is too slow - hence kernel panic.
Questions.
1. Does this sound plausible?
2. If so how do you slow down the boot process so the USB stick can be ready?
3. rhadon What is the content of your menu.lst? You say that you can boot from USB using the grub menu on the hd. This is exactly what I am trying to do.
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rhadon
Joined: 27 Mar 2008
Posts: 1228
Location: Germany
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| Posted: Fri 30 Jul 2010, 06:10 Post subject:
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| Mercedes350se wrote: | | 1. Tried rhadon's suggestion. |
Which one? To copy initrd.gz to hd or the find command or both?
What happens if you copy initrd.gz to your hd? This should work for you.
If not: what does the find command return? Should be "hd0,0" or "hd1,0" or both.
If only hd0,0 though initrd.gz is also on your stick, than grub doesn't detect your usb stick. If nothing returns, be sure to write the exact path: if Pmount shows /boot/initrd.gz than type exact this to the grub command line.
| Quote: | | ...but the USB drive is too slow - hence kernel panic. |
I remember I've read something about that some times ago but have forgotten because I've never had this problem. I'm not sure whether this is your problem.
Maybe rcrsn51 can help. I belive that he knows more about this stuff than I .
My menu entry is vers simple: | Code: | title test usb Linux (sdb1)
rootnoverify (hd1,0)
kernel /vmlinuz pmedia=usbflash
initrd /initrd.gz |
BUT the main question is:
can grub detect your usb stick or not?
Only if it can: Where on your usb stick are the puppy files? If they are in a folder like /boot/ than you must change the path for kernel and initrd in your entry.
I tried to describe in detail as possible but I'm not an english native. So maybe there is enough space for misunderstandings. If so, I apologise.
~ Rolf
_________________
Ich verwende "frugal", und das ist gut so.
Raspberry Pi without Puppy? No, thanks.
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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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| Posted: Fri 30 Jul 2010, 06:29 Post subject:
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rhadon thank you for your help.
After a lot of searching and, I would say a great deal of luck, I followed the method in
http://www.murga-linux.com/puppy/viewtopic.php?t=42388
This seems to work BUT it appears to be running in RAM. Terrific if it is. How can I found out for certain?
I was asked if I wanted to save the session so now I have a pupsave on sdb2. Is this the indication I need?
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rhadon
Joined: 27 Mar 2008
Posts: 1228
Location: Germany
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| Posted: Fri 30 Jul 2010, 07:04 Post subject:
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Congratiulation 
There are many ways to reach the goal.
What's so terrific about running in ram? Maybe a misunderstanding?
Usually Puppy is running in ram, a small message during boot process confirms this.
From time to time (default is every 30 min.) Puppy saves all changes to the stick. The same happens if you shutdown. You can change this value in Menu -> System -> Puppy Event Manager -> Save session if you want.
Your pupsave file is only an indication that you have installed frugal. This means, that everything you add, copy, delete or change on this partition happens in this file. The more files you add, free space in your save file goes more and more down.
There is one exception. It's the folder /mnt/home. Everything you add or change here (or in subfolders) will be stored on your stick outside the save file.
I think it's important to know if you are new to frugal
Usually I use the same place for my save file where my other puppy files are. That's easier if you have installed more puppies. But it's not important, Puppy will find your save file everywhere.
~ Rolf
_________________
Ich verwende "frugal", und das ist gut so.
Raspberry Pi without Puppy? No, thanks.
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rcrsn51
Joined: 05 Sep 2006
Posts: 7758
Location: Stratford, Ontario
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| Posted: Fri 30 Jul 2010, 10:14 Post subject:
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@Mercedes350se: Just out of curiosity, could you please post the menu.lst entry that finally worked for you?
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Mercedes350se
Joined: 16 Apr 2008
Posts: 478
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| Posted: Fri 30 Jul 2010, 23:13 Post subject:
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@rcrsn51
# timeout 5
color light-gray/blue black/light-gray
# End GRUB global section
# Linux bootable partition config begins
title XXX Puppy
root (hd0,0)
kernel /boot/vmlinuz root=/dev/hda1 ro vga=normal
# Linux bootable partition config ends
# Linux bootable partition config begins
title BANKPUP
root (hd0,0)
kernel /boot/vmlinuz root=/dev/sdb1 ro vga=normal
initrd /boot/initrd.gz
1. Now that BANKPUP boots I would like a step by step explanation of why/how it works.
2. I now have on sdb1:
/sdb1/boot
/sdb1/extlinux.conf
/sdb1/extlinux.sys
/sdb1/initrd.gz
/sdb1/pup_301.sfs
/sdb1/vmlinuz
/sdb1/zdrv_301.sfs
and in /sdb1/boot there is:
/extlinux.conf
/extlinux.sys
/initrd.gz
/pup_301.sfs
/vmlinuz
/zdrv_301.sfs
Which of these can be safely deleted?
I have just noticed that after all of the hassle 3.01 does not appear to have a Menu -> System -> Puppy Event Manager -> Save session entry so that I can stop saves to the stick during the session.
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