In the meantime, Sorry to bother you and waste your time,
Other then some miscommunication, you are not bothering me at all. If there is something that does not work then it is considered a challenge
unfortunately, my English translation does not help to understand, I understand the translation of your English,
Please do not apologise for not mastering the English language.
After all, it is an obscure language spoken/written/read only by a handful of people in this world. I myself am also not very fluent in writing English (i often apply my native tongue grammar rules to my English writings, which is simply wrong)
That is why i suggested earlier: if you are uncertain about how to express yourself clearly in English, then feel free to write things in your native tongue. In case you are communicating in a English spoken forum, then it is advisable to also put up your own English translation, so that other people are able to follow the discussion as well.
It might perhaps not be the best idea (for me) to use a translation service (they are sometimes producing very wrong results) but as long as you are able to (extensively) describe things (e.g. not just using terminology used in your native language) then this helps with understanding what you wrote.
I made the partitions on an external HD USB and not on a Pendrive and anyway, "install AROS" for me is not a problem I've never had, I've always installed AROS successfully on all devices.
Ok, so let us take this on step at a time.
You are writing, that you do not have any problem with running the "install aros" script, and that it installs AROS correctly for you (at least to a USB connected Hard Disk).
Therefor I am also assuming that this means that you are able to boot AROS native from that USB connected HD on your machine, and are able to do so without any problems.
I'm sorry but also here the translation makes disasters, the problem occurs only if I want to create a PendriveLive to "use it as installer" instead of the DVD
Please don't worry about the translation. I think i am starting to understand what your problem is with regards to AROS.
Also, with this statement of yours, i am making some assumptions.
1) "create a pendrivelive"
The procedure for creating a pendrive is exactly the same as installing AROS to a HD. The only difference is that the device used during installation might be different.
2) "pendrive/live/"
There you are refering to a "live" pendrive. For AROS itself there is not such a thing as a "live" pendrive.
The only time i have seen the terminology "live" pendrive, is with Icaros Desktop. Icaros Desktop provides a script to create a special pendrive installer for you.
3) to "use it as installer"
As i wrote before. If you are doing a normal installation of AROS using "Install AROS", but instead of installing it to a Hard Disk you select to install AROS to a pendrive, then the result of that installation is that you have created a pendrive that is able to boot AROS native on your machine.
When you are able to boot the opendrive native on your machine, it allows you to repeat the same "Install AROS" procedure, so that you can use that pendrive to install AROS to another device (such as a internal IDE/SATA connected HD).
That leaves me with the following question: if you receive a MBR boot error code 3, then where exactly do your get that error ?
Is it:
a) during the first installation of your pendrive (e.g. the error is then generated by "install aros" ?
or is it:
b) when you finished creating the installation of AROS to the pendrive and are trying to boot the pendrive (that has AROS installed to it) native on your machine ?
or is it:
c) a and b worked for you as intended but when you tried to install AROS again (from the pendrive) to another device (for example an internal IDE/SATA HD) you get that error
or is it:
d) a, b and c worked without problems but when you finished the installation to the internal (IDE/SATA) device, and when you try to boot that device (where you just installed AROS to) native on your machine, you receive the MBR boot error code 3 ?
Depending on where exactly in the process you are receiving this error, a different strategy (and information) is required in order to understand and perhaps be able to solve the problem.
Just to make sure, i do know that the MBR boot error code is originating form the (native) boot-process, but since we see, lost somewhere in translation i just want to make sure
Another concern i have is your use of the word "Live" pendrive. I somehow got the feeling that you are persistent in writing an AROS ISO file to a USB pendrive (either by using some 3th party tool like RUFUS or otherwise) . If that is the case, then you have answered your own question because (as i wrote before) that does not work for AROS.
The (currently only) method that does work for AROS, is as described in this post. Another solution, in order to write a image to a pendrive, is to create such an image manually and distribute that special crafted pendrive image,, as Paolone did with his lite distribution of Icaros Desktop.
Regards,