Yokemate of Keyboards
Posts: 2021 from 2003/2/24
From: po-RNO
Quote:Amigaharry2 wrote:
Quote:
jPV schrieb:
................
Those steps are if you want to boot an installed system from USB, which isn't your case now. Nothing to do when you just want to boot an ISO image from USB.
If I understood that right: He want's to boot from a ISO-image copied on a Stick? ...AFAIK OF doesn't know anything about ISO-structure......So boot.img must be copied outside the image to make it visible for OF - am I right? After booting MOS-Kernel the iso will be known.
[edit: this step is also discribed in the intallation guide..]
But:
From my point of view it makes no sense to copy a ISO-image on rewritable medium! In any case he had to copy the content of the ISO-image on the stick - you may call that a installed MOS, but ist only a 1:1 copy of the ISO content. The small HFS-Partion is usefull to copy the propper boot.img there (in his case the full content of dir "mac-ppc32" on the iso).
You don't have to have the contents of the ISO image on the stick. Usually, unless there's now an exception with certain Mac models.
It should be enough just to have two files on a FAT (or maybe HFS) formatted stick: boot.img and morphos.iso. OF is commanded to boot from the boot.img file and the bi (bootimage) option defines the ISO file which boot.img uses to boot the actual MorphOS system from. The boot.img file (MorphOS kernel) is able to boot the system from unextracted ISO files. I find this much more simple solution than to create an installed system on the stick.
But as there clearly are difficulties with that generally working method, the question is if the stick is somehow incompatible or if the whole machine is incapable to do boot from any usb device with this way for some reason.
Now when I try to remember harder, I think I had similar difficulties with a PowerMacG4 (3,5) machine which I had loaned for some time. I couldn't get it to boot from the same USB stick I did use successfully with other machines (like two minis, two IBooks, one Powerbook). And I ended up to boot from a CD to install the system.
BUT then I also played around with a stick which had an INSTALLED system on it, just like you said, a small HFS partition for the boot files (the bootinfo.txt file probably needs "blessing" after copying) and a SFS partition for the installed MorphOS system files. And I not only succeeded to boot from it on that PowerMac, but that PowerMac was the only machine which actually did show the stick on the alt-key bootmenu! So, your method could actually work, but it's quite hard to create the SFS partition with the installed system, if you don't have any other MorphOS machine.
So, there might be some differences between Macs or their firmware versions, and the usually working USB guide might not work on all models afterall.
But it also could be just because of the stick or its format. I also had some very old 256MB stick, which probably had some older FAT version, and that stick didn't work until I reformatted it.
Quote:
ud: interessting - did'nt found any Mac without this alias til yet.....
I've had two out of six machines where it hasn't worked.
ud available on these here:
Mac mini 1.5GHz, PowerBook5,9, IBook 1.33GHz/12", and IBook 1.42GHz/14".
ud not available on these:
Mac mini 1.42GHz and PowerMac G4/800MHz
Maybe it's about OF version?
For example...
Mac mini 1.42GHz model 10,1 (not working): 4.8.9f1 12/10/04
Mac mini 1.5GHz model 10,2 (working): 4.9.4f1 07/12/05
IBook 1.42GHz model 6,7 (working): 4.9.3f0 07/05/05
Maybe ud appears from bootrom version 4.9.x onwards for example? Unless there's some setting that you could create it yourself? That would be nice to know if there'd be such :)