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 Forum index » House Training » HOWTO ( Solutions )
How to Make a Bootable Flash Drive using ISObooter
Moderators: Flash, Ian, JohnMurga
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keniv

Joined: 06 Oct 2009
Posts: 202
Location: Scotland

PostPosted: Tue 26 Mar 2013, 18:14    Post subject:  

Hello rcrsn51

I am using the grub4dos method.

Quote:
the original Grub4Dos way can. Just follow the same procedure as with the GRUB2 way.


This method suggests adding the word "persistent" to the "linux" line in the grub.cfg file. In grub4 dos there is no grub.cfg file only the menu.lst. The menu.lst file does not contain the "linux" line that is

Code:
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/ubuntu.iso noeject noprompt splash --


but does contain the similar line

Code:
kernel /casper/vmlinuz boot=casper iso-scan/filename=/ubuntu.iso noeject noprompt splash  --


Should I add "persistent" to this line. Should I add the "(loop)" as well. If not can you tell me what to add to the entry that I have in my menu.lst which is currently as follows.

Code:
title Ubuntu 12.04 LTS Desktop ISO
 find --set-root /ubuntu.iso
 map /ubuntu.iso (0xff)
 map --hook
 root (0xff)
 kernel /casper/vmlinuz boot=casper iso-scan/filename=/ubuntu.iso noeject noprompt splash  --
 initrd /casper/initrd.lz


I intend to partition the USB flash drive and format the second partition as ext4 and label it as "casper-rw" as you suggest. Can you tell me if there is anything else I need to do.

Regards,

Ken.
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rcrsn51


Joined: 05 Sep 2006
Posts: 9353
Location: Stratford, Ontario

PostPosted: Tue 26 Mar 2013, 19:32    Post subject:  

Add "persistent" to the "kernel" line.
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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Tue 26 Mar 2013, 23:26    Post subject:  

I wanted to try this on Zorin linux Lite that is only 650MB
but the isobooter only had this code

Code:

title zorin-os-6.2-lite
partnew (hd0,3) 0x00 (hd0,0)/zorin-os-6.2-lite.iso
map --heads=0 --sectors-per-track=0 (hd0,0)/zorin-os-6.2-lite.iso (0xff)
map --hook
root (0xff)
chainloader (0xff)



So not the more expanded one that keniv retell

So Zorin being based on Ubuntu I got surprised.

http://distrowatch.com/table.php?distribution=zorin
Quote:

Zorin OS is an Ubuntu-based Linux distribution
designed especially for newcomers to Linux.


so where to add the persistence there would this work?
Code:

title zorin-os-6.2-lite
partnew (hd0,3) 0x00 (hd0,0)/zorin-os-6.2-lite.iso
map --heads=0 --sectors-per-track=0 (hd0,0)/zorin-os-6.2-lite.iso (0xff)
map --hook
root (0xff)
kernel /casper/vmlinuz boot=casper iso-scan/filename=/zorin-os-6.2-lite.iso noeject noprompt splash persistent --
 initrd /casper/initrd.gz
chainloader (0xff)



I often see these -- in the end of a boot code.
I never heard an explanation for them? Is it for parsing too long lines
to prevent the parser to drop instructions due to too long line?

Edit after testing to add the word persistent to the line as indicated above

It boots the same as without it but it does not save any changes
either of Date and Time or Loudspeaker volume or coding of
browser or what homepage to use or setting of keyboard map
so what can be tested now that that did not work?

Don't one need a casper-rw file so the program for persistence
can find it and use it for changes?

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rcrsn51


Joined: 05 Sep 2006
Posts: 9353
Location: Stratford, Ontario

PostPosted: Wed 27 Mar 2013, 10:43    Post subject:  

@nooby: Read my comment here.

[Edit] I looked at this again and got Ubuntu to work with persistence on ISObooter.

You need either a second flash drive or a second partition on your ISObooter drive. Format it as ext4 and label it "casper-rw"

Boot it with this kind of menu.lst entry:
Code:
title ubuntu-10.10-desktop-i386
partnew (hd0,3) 0x00 (hd0,0)/ubuntu-10.10-desktop-i386.iso
map --heads=0 --sectors-per-track=0 (hd0,0)/ubuntu-10.10-desktop-i386.iso (0xff)
map --hook
root (0xff)
kernel /casper/vmlinuz boot=casper iso-scan/filename=/ubuntu-10.10-desktop-i386.iso noeject noprompt splash persistent --
initrd /casper/initrd.lz

Note that the "kernel" entry is on one long line.

I also followed the procedure for creating a new Ubuntu user.
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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Wed 27 Mar 2013, 13:58    Post subject:  

Thanks yes I knew it needed something like what you explain here

Quote:

Format it as ext4 and label it "casper-rw"

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keniv

Joined: 06 Oct 2009
Posts: 202
Location: Scotland

PostPosted: Wed 27 Mar 2013, 17:37    Post subject:  

Hello rcrsn51

Quote:
Add "persistent" to the "kernel" line.


I have done this and am now able to boot ubuntu with "persistence". So far I have downloaded an installed 581 updates. I have also installed VLC and Flashplayer. Downloading and installing these seemed very slow. I thought this might be something to do with demand on the repositories as I also installed addblock and flashblock in Firefox and this seemed about normal or a difference in speed between a flash drive and an hdd. All I have done is still there after rebooting several times. I have also added my two favourite Puppies as frugal installs to the fat32 partition and both are booting properly. I am very pleased with this. Thanks for your help in getting it working.
I did wonder how often ubuntu writes to the flash drive. Is it possible to do with ubuntu what can be done with puppy and only allow saving to the flash drive at shutdown or even elect not to save at all?

Regards,

Ken.
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rcrsn51


Joined: 05 Sep 2006
Posts: 9353
Location: Stratford, Ontario

PostPosted: Wed 27 Mar 2013, 17:50    Post subject:  

Writing to a flash drive is definitely slower then writing to a hard drive. And some flash memory is slower than others. You can test this yourself by copying a large file, like an ISO, to both media.
Quote:
I did wonder how often ubuntu writes to the flash drive

Does your drive have an LED indicator light? I expect that it is blinking constantly.

Be aware that flash drive setups are much easier to corrupt than hard drives. I wouldn't be saving any important data in your Ubuntu home directory.
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keniv

Joined: 06 Oct 2009
Posts: 202
Location: Scotland

PostPosted: Wed 27 Mar 2013, 18:24    Post subject:  

No there is no LED on this one and I suspect it is not very fast as it was cheap. Thanks for the warning about possible corruption of the flash drive.

Regards,

Ken.
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d4p


Joined: 12 Mar 2007
Posts: 407

PostPosted: Sun 31 Mar 2013, 23:35    Post subject:  

@rcrsn51

Before I have already total about 230 multibootable Linux liveos include windows, dos & android on 500 GB usb external HD with multiple partitions.
I move everything to 2Tb external HD with 10 partitions (some ntfs, vfat, ext3 and one for partnew partition) and put 20 additional isos which bootable with partnew methode but unfortunatly the 20 isos will not boot on old pc pentium 4 (2 Gb rambus).
Without partnew methode all isos, flat files (frugal), imgs just work fine on that machine. I think Partnew methode is not for old computers???.
At the moment I dont have another old computer for testing.

Grub4dos is the best multi-boot manager ever.
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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Mon 01 Apr 2013, 09:28    Post subject:  

Grub4dos is the best multi-boot manager ever.

In some other thread there is opinion to skip
grub4dos and instead use some other loader.

I know too little to get what is good and bad about them.

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rcrsn51


Joined: 05 Sep 2006
Posts: 9353
Location: Stratford, Ontario

PostPosted: Mon 01 Apr 2013, 11:48    Post subject:  

d4p wrote:
I think Partnew methode is not for old computers???.

I don't have any really old P4 machines to test, but ISObooter works fine on my old Athlon box.

Did you see any error messages?
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d4p


Joined: 12 Mar 2007
Posts: 407

PostPosted: Mon 01 Apr 2013, 21:44    Post subject:  

@nooby

There are a lot of loader alternatives you can choose depending on your need.
I have no idea which other loader can support ntfs, vfat, linux ext* and cdfs format.
I use all formats for multiboot on a usb external HD and it suppose to work on a lot of computers, but not for uefi.
Some limitations each format what I know so far:
vfat can not handel a file over 4 Gb
linux ext* will not support windows and iso file
Many linux liveos(s) do not support ntfs
cdfs will not work on extended partition

@rcrsn51

No problem on athlon, p5, i3, i5, i7

error 29: disk write error
Dell workstation 340
pci card usb 2.0
boot from plop
p4 2.8 ghz
rambus 2 Gb
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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Tue 02 Apr 2013, 06:08    Post subject:  

I don't want to derail this thread but the following thread
has implication for the grub4DOS usage in Puppy?

Simplifying the Boot process for all PUP use: Clearing it UP
http://www.murga-linux.com/puppy/viewtopic.php?t=85059

Sorry I am too lazy to go through each post and only quote
the exact text that tells me that if them have any say in the future
then there will be no GRUB4DOS anymore Smile That is how I read them

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amigo

Joined: 02 Apr 2007
Posts: 2288

PostPosted: Tue 02 Apr 2013, 11:21    Post subject:  

nooby, I think you got the wrong idea. The upshot of the other thread is that isolinux is the most likely thing to be able to boot nearly anywhere. grub4dos is way more flexible where it can be used -but a LiveCD that boots with *any* grub will fail to boot on some machines, where and *isolinux* Live CD will boot.
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nooby

Joined: 29 Jun 2008
Posts: 10557
Location: SwedenEurope

PostPosted: Tue 02 Apr 2013, 13:17    Post subject:  

Amigo thanks for pointing out the real issue
and the driving motivation of that thread.

To find a boot loader that would always work
on a CD/DVD way of booting.

But on small computers like Netboots
they have no CD/DVD so one can use SD card reader
built in and that work also for the USB connector way
of booting but then one need a bootloader made for
booting a USB or SD Card.

rcrsn51 coming up with Isobooter works well
for USB I have tested it many times now.

So if all puppies goes over to *isolinux* Live
would that still work? Mabye it does I only felt
a scare feeling of the end of booting Puppies
this easy way?

What about *isolinux* Live and frugal install on the HD?
Would not that need Grub3dos if one have NTFS only partitions?

*isolinux* Live would need Fat32 or Ext2 or so on?

I know too little but posted my fear here so somebody could explain

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