Can't boot into RTAI kernel

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9 years 6 months ago #91373 by tommylight
Replied by tommylight on topic Can't boot into RTAI kernel
Right click on iso and choose "write image to disc". That works always for CD, sometimes for USB, not always.
Leme attach the GRUB entry so you can boot the iso without install.
Place the iso on /boot/iso and also extract the content of the "live" folder from iso and copy it to /live on hdd.
You have to do both those steps for USB or HDD or it will complain about not finding something or another.
Back in a sec.
Code:
menuentry "DebianDog-Jwm-3.4-9-rtai-686-pae-2" { set isofile="/boot/iso/DebianDog-Jwm-3.4-9-rtai-686-pae-2.iso" loopback loop $isofile linux (loop)/live/vmlinuz1 boot=live findiso=$isofile initrd (loop)/live/initrd1.xz }

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9 years 6 months ago #91375 by Todd Zuercher
Replied by Todd Zuercher on topic Can't boot into RTAI kernel
When I burned the iso to a cd this is all that showed up on it.
Code:
Directory of E:\ 09/15/2014 01:53 PM 983,040 DEBIANDO 09/15/2014 01:53 PM <DIR> ISOLINUX 01/04/2017 07:43 PM <DIR> LIVE 1 File(s) 983,040 bytes Directory of E:\ISOLINUX 09/15/2014 01:53 PM <DIR> . 09/15/2014 01:53 PM <DIR> .. 09/15/2014 01:53 PM 2,048 BOOT.CAT 09/15/2014 01:53 PM 63 EXITHELP.CFG 09/15/2014 01:53 PM 842 F1.TXT 09/15/2014 01:53 PM 728 F10.TXT 09/15/2014 01:53 PM 424 F2.TXT 09/15/2014 01:53 PM 597 F3.TXT 09/15/2014 01:53 PM 357 F4.TXT 09/15/2014 01:53 PM 807 F5.TXT 09/15/2014 01:53 PM 1,169 F6.TXT 09/15/2014 01:53 PM 933 F7.TXT 09/15/2014 01:53 PM 181 F8.TXT 09/15/2014 01:53 PM 747 F9.TXT 09/15/2014 01:53 PM 24,576 ISOLINUX.BIN 09/15/2014 01:53 PM 68 ISOLINUX.CFG 09/15/2014 01:53 PM 284 LIVE.CFG 09/15/2014 01:53 PM 231 MENU.CFG 09/15/2014 01:53 PM 174 PROMPT.CFG 09/15/2014 01:53 PM 5,264 SPLASH.PNG 09/15/2014 01:53 PM 518 STDMENU.CFG 09/15/2014 01:53 PM 163,116 VESAMENU.C32 20 File(s) 203,127 bytes Directory of E:\LIVE 01/04/2017 07:43 PM <DIR> . 09/15/2014 01:53 PM <DIR> .. 01/04/2017 07:42 PM 168,759,296 01_FILES.SQU 09/15/2014 01:53 PM <DIR> BASE 09/15/2014 01:53 PM 7,860,332 INITRD1.XZ 09/15/2014 01:53 PM <DIR> MODULES 09/15/2014 01:53 PM <DIR> OPTIONAL 09/15/2014 01:53 PM <DIR> ROOTCOPY 09/15/2014 01:53 PM 2,882,560 VMLINUZ1 09/15/2014 01:53 PM 437 WHEEZY_I.SGN 4 File(s) 179,502,625 bytes Directory of E:\LIVE\BASE 09/15/2014 01:53 PM <DIR> . 01/04/2017 07:43 PM <DIR> .. 09/15/2014 01:53 PM 585,728 021_APPS.SQU 1 File(s) 585,728 bytes Directory of E:\LIVE\MODULES 09/15/2014 01:53 PM <DIR> . 01/04/2017 07:43 PM <DIR> .. 0 File(s) 0 bytes Directory of E:\LIVE\OPTIONAL 09/15/2014 01:53 PM <DIR> . 01/04/2017 07:43 PM <DIR> .. 0 File(s) 0 bytes Directory of E:\LIVE\ROOTCOPY 09/15/2014 01:53 PM <DIR> . 01/04/2017 07:43 PM <DIR> .. 0 File(s) 0 bytes Total Files Listed: 26 File(s) 181,274,520 bytes 18 Dir(s) 0 bytes free

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9 years 6 months ago #91376 by Todd Zuercher
Replied by Todd Zuercher on topic Can't boot into RTAI kernel
I'm afraid I don't understand your instructions. I wanted to try out what I thought was a live CD in a VM. Is this not an ordinary live CD? Usually I can just boot a VM with VirtualBox directly from the iso.
That isn't working in this case. I tried burning the iso (from Windows I know) but it normally works fine for all other distros I've tried. And I get the same results.

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9 years 6 months ago #91378 by tommylight
Replied by tommylight on topic Can't boot into RTAI kernel
I do not think that is the right one, this is
DebianDog-Jwm-3.4-9-rtai-686-pae-2.iso
Anyway you look at it, it is a fiddly image as all PUP's are, and needs to have things in their own places to work. Not complaining, just they are small and light images for a reason, and they do serve a purpose, and they are good at doing so. I never tested on VM, i have plenty of USB drives so i test directly from them, always using this:
liveusb.info/dotclear/index.php?pages/install
well it looks like it is not working till 30.04.2017 oh c....
moving on
If you have a system with linux in it (and grub on MBR ), the above procedure works, and it is not explained elsewhere as i am not a member of those forums.
You are right, it should work like that and in some cases it does, but it has been a pain to make it work from a usb drive as i need to have other distros in it too.
The file listing looks Ok, aside the size of the files, it should be 244.8MB
We should start a new thread as this could be useful for other members.

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9 years 6 months ago #91390 by Todd Zuercher
Replied by Todd Zuercher on topic Can't boot into RTAI kernel
I may yet start a new thread. but I won't have time to look into this more closely for a few days (or weeks). A colleague was able to get it to start using your instructions. Afraid I really don't understand why it has to be so hard to start it to boot. Is there a way to fix it so that the iso can just boot by it's self on an empty machine?

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9 years 6 months ago #91393 by rodw
Replied by rodw on topic Can't boot into RTAI kernel
I don't know if this is relevant but when I could not boot from an .ISO burnt to a USB stick, Google told me it was a known problem and to burn the .ISO on a windows machine using win32diskimager. It worked a treat every time and thats the way I burn all of my .ISO to USB now. You just have to rename the .ISO file to .IMG first so win32diskimager can see it.

Give it a go and see if it makes a difference. You can grab it here
sourceforge.net/projects/win32diskimager/

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9 years 6 months ago #91400 by tommylight
Replied by tommylight on topic Can't boot into RTAI kernel
I will give it a try to explain why that type of iso images has such fuzzy issues:
It is easy to set it to boot the vmlinuz and initrd from any boot loader, but after that it needs the other data to boot, namely the squashfs or any other type of compresed image, but as the drives and CD can have diferent names on diferent computers, it needs to have that image at a certain location as it can not search for it, it has just some locations that it will search and give up.
I have spent plenty of time making it run on the same USB's with other distros, and i never use it, just like to have it for testing.
I have also the debian wheezy Linuxcnc iso set on several USB to boot so if anyone needs the menuentry for GRUB i will attach it.
Last night i did also the install menuentries for wheezy LCNC, but it fails when checking the CD. Needs more work.
This all points to : i do not like to have USB doing a single thing, it has to do more ( have 3 that i carry with me all the time). Profesional deformation from working as an IT admin for way to long. :)

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