Hi to all, i am new in this forum as I wanted to try a new os on my PoweMac G4 Quicksilver 1.25 ghz... i followed the steps on the guide and i tried all kinds of suggestions found on the internet, but nothing. When i try to type boot usb0/disk@1:,\boot.img bi=umsd0:morphos.iso and then enter it says:

"can't OPEN: usb0/disk@1:,\boot.img"

obiviously I chose the right usb stick founding it by the command dev usb0 ls

Thanks in advance to all who want to help me

[ Edited by pochopsp 12.02.2016 - 12:21 ]

Did you follow this guide?

http://www.morphos.de/guide/usb-boot

Yes i followed all the steps from the guide and it did not work. Then i tried other suggestions found on the web and it did not work neither

Try with small first partition (max.250mb) on pendrive .

Can You read directory pendrive?

dir usb1/disk@1:,\


Are You use internal USB or USB PCI card ?

[ Edited by Norbi 12.02.2016 - 07:02 ]

Quote:

Yeah, looks like it does find the stick but isn't able to read it. Since this is an older PMac, it could be that it's OpenFirmware cannot handle your stick for some reason. Make sure it's FAT32 formatted. Alternatively, if you have OSX, format the stick with HFS.

@Norbi: I tried with a 512 mb partition but nothing

@jacadcaps: it is a 16 GB kingston 2.0 usb stick... i have FAT32 formatted it on my windows pc. I will try with HFS.

EDIT: tried with HFS format but it still says: "can't OPEN: usb0/disk@1:,\boot.img"

[ Edited by pochopsp 12.02.2016 - 12:21 ]

At the beginning, Openfirmware must see stick.

Try like this.

Dir usb1/disk@1:,\

If not work, path is wrong, or OF not see stick


Try with small partition max 250mb

I tried with dir usb0/disk@1 and after pressing enter it shows "ok"

but i am sure it can see the stick

i'll try with 250 mb partition and let you know

If is OK, stick (partition) is too big
I tested stick 8GB with partition 256MB i next time with 512MB . It works
Partition 1GB - not work

just tried with hfs 256 mb partition... it can see the
e stick but after the command boot usb0/disk@1:,\boot.img bi=umsd0:morphos.iso it shows the same answer

"can't OPEN: usb0/disk@1:,\boot.img"

first test command dir

dir usb0/disk@1:,\

Only FAT partition. umsd0
HFS not show in bootmenu Morphos


[ Edited by Norbi 12.02.2016 - 17:02 ]

i did not understand what you mean... anyway with the command dir usb0/disk@1:,\ it simply says "ok"

Normaly OF creates during bootprocess a alias for a inserted USB-stick called ud, which points to the right port.
The USB-stick should have a first small HFS partition and a second one in SFS for MOS.
The HFS-Partition includes the propper boot.img, boot.txt and bootinfo.txt for your MAC.

in OF type:

>boot ud:,\boot.img bootdevice=<name of your MOS-partition>

I've tested this on PB-G4, Mini and G5.

Quote:

These steps are not specified in the guide... could you explain me the difference beetwen hfs and sfs and explain me breefly what i have to do?

The size of the partition, if i have to create two ones, the commands i have to write in openfirmware etc...

Thanks a lot

Quote:

This isn't the case with all machines. I have several machines which make the ud alias, but then some other machines which don't do that. Maybe it depends of OF version or something... would be nice to find out some day the exact reason behind it.

Quote:

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.

Quote:

If stick have files, "ok" is wrong
Normally you should show a list of files

Guys I am a bit confused now... What I have to try now to get it work?

@Norbi so it should show all files on the usb stick... i'll try with a 256 mb FAT partition

EDIT: just tried with 256 mb FAT partition... with the command dir it doesn't show files but just "ok"

[ Edited by pochopsp 12.02.2016 - 19:06 ]

> could you explain me the difference beetwen hfs and sfs

In this context, the difference is that the Mac OpenFirmware can read HFS but can't read SFS.

@andreaswolf thanks for the explaination

Guys still no solutions for my problem?

[ Edited by pochopsp 13.02.2016 - 01:28 ]

Quote:

Get a working optical drive and burn a disc instead?

That is not a solution as i have not a working optical drive and i can't buy it. But i still want to try something else with the USB method because a few time ago i managed to install ubuntu, and it was really harder than this. To prepare the USB stick for ubuntu i had to do it through the terminal with a lot of commands... Here is simple as i only have to copy files on the stick. But i can't understand what's the problem and how to solve it.

@pochopsp

It could might be that your Machine has problems with this usb stick ( i had problems with an new intensio stick).
Take a new one - and don't make partitions.
Begin http://www.morphos.de/guide/usb-boot at point 3.

Good luck!

@defender

I'll try and i'll let you know. thanks a lot

Quote:

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).

ud: interessting - did'nt found any Mac without this alias til yet.....


[ Editiert durch Amigaharry2 13.02.2016 - 18:19 ]