ISO boot from FAT/NTFS/USB (GRUB.exe, grldr from boot.ini)

**Salvano** · 05-23-2008, 05:11 PM

Hello Gilles,

yesterday I started with Knoppix 5.31. I prepared all with http://s94002264.onlinehome.us/grub/knx531.zip form you and it runs. Thank you for that.

After that I liked to create an encrypted knoppix home image. But the coressponding script /usr/sbin/knoppix-mkimage fails during encryption.
The error message is

ioctl: LOOP_SET_STATUS: Das Argument ist ungültig (german, stands for: argument is wrong), requested cipher or key length (256 bits) not supported by kernel

The cipher is AES256.

I tested the same booting from CD directly. In this case it works.

Is it possible to enable the AES256 facility within the kernel?

Holger

**Salvano** · 06-01-2008, 08:04 AM

With the help of Google I found that "modprobe cryptoloop" could help.
Within the running system it helped. To get it during the boot process I copied /usr/sbin/knoppix-image to / of the minirt and modifiered linuxrc in such a way that it is moved back just before init is started. I modifiered knoppix-image with "modprobe cryptoloop" before it is needed. (I had a try with a copy of cryptoloop.ko in /modules and loadmodule also, but it didn't work)

It is clear: it is a hack.

The script knoppix-image is realitivly new (Okt 2007). That may be the reason that it does not work with minirt531.

Holger

Originally Posted by Salvano

Hello Gilles,

yesterday I started with Knoppix 5.31. I prepared all with http://s94002264.onlinehome.us/grub/knx531.zip form you and it runs. Thank you for that.

After that I liked to create an encrypted knoppix home image. But the coressponding script /usr/sbin/knoppix-mkimage fails during encryption.
The error message is

ioctl: LOOP_SET_STATUS: Das Argument ist ungültig (german, stands for: argument is wrong), requested cipher or key length (256 bits) not supported by kernel

The cipher is AES256.

I tested the same booting from CD directly. In this case it works.

Is it possible to enable the AES256 facility within the kernel?

Holger

**hat_monkey** · 06-29-2008, 11:58 AM

grub boot of knoppix5.3..DVD.iso on USB flash drive (ext2) :
have tried home=scan results in no knoppix.img being loaded and no mention of knoppix.img in the booting screen.
have tried home=/media/sda1/knoppix.img results in an error something like /usr/sbin/knoppix-image
have tried home=/dev/sda1/knoppix.img also results in no persistent knoppix disk image being loaded.

With the help of Google I found that "modprobe cryptoloop" could help.
Within the running system it helped. To get it during the boot process I copied /usr/sbin/knoppix-image to / of the minirt and modifiered linuxrc in such a way that it is moved back just before init is started. I modifiered knoppix-image with "modprobe cryptoloop" before it is needed. (I had a try with a copy of cryptoloop.ko in /modules and loadmodule also, but it didn't work)

It is clear: it is a hack.

The script knoppix-image is realitivly new (Okt 2007). That may be the reason that it does not work with minirt531.

Holger

if this is the solution; no it is not clear. could we have a rewrite in simpler terms please. start with how to go about ediiting minirt_531.gz, or perhaps pack a new one and put it somewhere for download. thanks

**hat_monkey** · 07-15-2008, 07:24 AM

using
home=/media/sda1/knoppix.img
on a different computer now and persistent image is now functioning. dont know why persistent image wouldnt load on the previous two computers.
knoppix swap wont load from the same partition as the .iso.
fusion only comes when it itself pleases.
otherwise mostly were dancing. so many games

**patelbhavesh** · 08-10-2008, 02:53 PM

Originally Posted by ruymbeke

Originally Posted by wslkevin

...kernel /knoppix/linux26 bootfrom=/dev/hda5/KNOPPIX*.iso knoppix_name=KNOPPIX ramdisk_size=100000 init=/etc/init ro lang=tw vga=791 noprompt noapm lcd ttf2ram ...Could you tell me how to access the partition /dev/hda5?

You are booting from /dev/hda5/KNOPPIX*.iso !
So /mnt/hda5 is already mounted by the boot script as read only, and as far as I know, it would be very dangerous to remount this partition as rw using ntfs-capture even if you could force it. But you should be able to mount /dev/hda1.
Gilles

As per this page http://www.knoppix.net/wiki/Bootable_USB_Key we should be able to fool knoppix to mount the partition read/wriite.
Does anyone know the exact command to mount the hda5 partition .I tried various remount commands like

Code:

mount  -o rw,remount /dev/hda5

Code:

mount  -o rw,remount /dev/cdrom

Code:

mount  -o rw,remount /dev/cdrom2.loop

but none seems to be able to remount the hda5 partition read/write.

**patelbhavesh** · 08-14-2008, 03:27 AM

Originally Posted by patelbhavesh

Originally Posted by ruymbeke

Originally Posted by wslkevin

...kernel /knoppix/linux26 bootfrom=/dev/hda5/KNOPPIX*.iso knoppix_name=KNOPPIX ramdisk_size=100000 init=/etc/init ro lang=tw vga=791 noprompt noapm lcd ttf2ram ...Could you tell me how to access the partition /dev/hda5?

You are booting from /dev/hda5/KNOPPIX*.iso !
So /mnt/hda5 is already mounted by the boot script as read only, and as far as I know, it would be very dangerous to remount this partition as rw using ntfs-capture even if you could force it. But you should be able to mount /dev/hda1.
Gilles

As per this page http://www.knoppix.net/wiki/Bootable_USB_Key we should be able to fool knoppix to mount the partition read/wriite.
Does anyone know the exact command to mount the hda5 partition .I tried various remount commands like

Code:

mount  -o rw,remount /dev/hda5

Code:

mount  -o rw,remount /dev/cdrom

Code:

mount  -o rw,remount /dev/cdrom2.loop

but none seems to be able to remount the hda5 partition read/write.

Ok finally figured it out we need to give the full path and the filesytem type

Code:

 mount -t ext3 -o remount,rw /dev/hdd5  /cdrom2.loop/

**ruymbeke** · 10-31-2008, 09:29 AM

Hello,
Please find below the new VmWare Workstation 6.5.0 or Player 2.5.0 (build 118166) virtual machine:
http://s94002264.onlinehome.us/grub/vmk531_118166.zip (53.7MB) for both Knoppix 5.3.1 and Knoppix 5.1.1
(there is a boot option to select which one of the Knoppix 5.3.1 of Knoppix 5.1.1 iso is used)
Have fun, and please provide some feedback...
Best Regards,
Gilles

And with the added persistence menu option (53.7MB) for both Knoppix 5.3.1 and Knoppix 5.1.1:
http://s94002264.onlinehome.us/grub/vmk531_118166a.zip

md5:
600a0a9c054d6ad0ba65c49eaa96f8d0 *vmk531_118166.zip
f360434d687dd4cca8af5f13e1bdcbfd *vmk531_118166a.zip

http://www.vmware.com/vmtn/appliances/directory/60868 (VmWare appliances listing link)

**Maner** · 11-12-2008, 03:32 PM

Hi,

a few quick questions is there a 5.1.1 only vmk?
because the boot screen is just annoying...
or i could just download the 5.3.1 if it's better and if i find it, is it a beta?

oh and also what is the persistence menu option?

sorry i'm a little short on time to search the forums

thanks

**ruymbeke** · 11-13-2008, 03:06 AM

Hello,
You can easily remove the unwanted boot options from the grub menu by editing the menu.lst file in the hda1 virtual drive.
To do so: boot all the way and then right click ont he hda1 icon and make that device writable, edit /mnt/hda1/menu.lst and reboot.
IMHO, Knoppix 5.1.1 is more robust and stable but since Knoppix 5.3.1 is using a more recent build of the kernel,
it will support the more recent hardware (if you run it on as a host) and have all the latest Open Source features.
Persistence allow you to keep changes (your data and configurations) across reboots.
By definition a Ramdisk will loose it's content at power off (or a virtual virtual shut off / reboot).
Hope this helps,
Gilles

Originally Posted by Maner

Hi,
a few quick questions is there a 5.1.1 only vmk?
because the boot screen is just annoying...
or i could just download the 5.3.1 if it's better and if i find it, is it a beta?
oh and also what is the persistence menu option?
sorry i'm a little short on time to search the forums
thanks

**ruymbeke** · 12-10-2008, 03:13 AM

Hello,
Please find below the new VmWare Workstation 6.5.1 or Player 2.5.1 (build 126130) virtual machine:
http://s94002264.onlinehome.us/grub/vmk531_126130.zip (53.3MB) for both Knoppix 5.3.1 and Knoppix 5.1.1
there are grub boot options to select for persistence or ramdisk and which one of the Knoppix 5.3.1 of Knoppix 5.1.1 iso is used
Cf: VmWare appliances listing link: http://www.vmware.com/vmtn/appliances/directory/60868
Have fun, and please provide some feedback...
Best Regards,
Gilles

md5:
8dace812cf56b9ab79e240a714851fcf *vmk531_126130.zip (55'907'735)