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"No Entry" when trying to install from USB on iBook G4

The "prohibited, or no-entry" sign means that there is a problem with the boot system on the USB stick.
It's either incorrectly created, or the stick is the wrong format to boot a PPC iBook (it must be APM, not GUID, for example)
OR, the system is not compatible with the iBook (won't boot the system)
Here's a thread that should give you good information (It's not as simple as just choosing which drive to boot. USB requires that you enter a boot command in Open Firmware. The thread that I linked has information about that, too.

What OS X version are you trying to install on your iBook?
 
DeltaMac said:
The "prohibited, or no-entry" sign means that there is a problem with the boot system on the USB stick.
It's either incorrectly created, or the stick is the wrong format to boot a PPC iBook (it must be APM, not GUID, for example)
OR, the system is not compatible with the iBook (won't boot the system)
Here's a thread that should give you good information (It's not as simple as just choosing which drive to boot. USB requires that you enter a boot command in Open Firmware. The thread that I linked has information about that, too.

What OS X version are you trying to install on your iBook?
Click to expand...
I'm trying to install 10.4. I have tried the image with 4 USB drives and all have failed.
 
What process did you use to make the USB bootable?
Is the USB stick formatted correctly to boot a PPC Mac? (it won't boot from a GUID format drive)
 
Formatted as APM (Apple Partition Map)?

After creating the bootable USB, did you use the Open Firmware command for booting to USB?
 
Just burn the images to CDs, it's less of a hassle, and it's a good thing to have discs to fall back on. Unless the iBook G4 has a broken optical drive, but I haven't seen you mention such a thing.
 
Don't use CD-R. The image is too large for that. You will need to use a DVD-R
(and hope that your iBook is one that has a Superdrive, and not a combo CD drive. Can't burn DVDs on a combo drive.)
 
DeltaMac said:
Don't use CD-R. The image is too large for that. You will need to use a DVD-R
(and hope that your iBook is one that has a Superdrive, and not a combo CD drive. Can't burn DVDs on a combo drive.)
Click to expand...
Except if you use the 4 CD images of OS X 10.4.
 
I've ran Tiger off USB before no problem.

Just make sure you specify your partition

example: boot usb1/disk@1:3,\\:tbxi

I bolded the 3 because that's the specific partition it's on.

just find your usb 0/1/2/etc (USB1 for me is the furthest USB port). and follow the example above. Try locating the partition using 'dir' (replace boot in the example with 'dir' so for example dir usb1/disk@1:3,\ )
 
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Can you give us a detailed, step by step description of how you created the USB installer?

One sentence answers are not of any use in helping us diagnose the problem. Telling us EVERY step you took starting with the blank USB disk and the install image may allow us to pinpoint the problem.
 
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