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[IIO]

if a harddrive does not spin, then either the harddrive or the controller ist broken. theoretically it could also be the powering of the HD, but that bus error screen tells us something else.

however there is no reason to fiddle with settings and stuff IMO.

put the drive into a USB case and see if it is the problem.

[devils_advisor]

if a harddrive does not spin, then either the harddrive or the controller ist broken. theoretically it could also be the powering of the HD, but that bus error screen tells us something else.

however there is no reason to fiddle with settings and stuff IMO.

put the drive into a USB case and see if it is the problem.

you are too late as usual but we blame it on the timezone. I think the power supply is gone. Wont even fire up. No we killing time with good old paula and protracker.

[IIO]

No PPC Mac can boot from USB...and even if this one did, it's USB1.1

thats not exactly right but i think thats later builds of g4's that can do that.

most people do not format their sticks to HFS, so they cant boot a mac from it.

[supernova777]

https://discussions.apple.com/thread/304622

Bus and address errors occur when a segment of memory is inaccessible

http://www.macwizard.com/errors.html

ID=01 Bus Error
This means the computer tried to access memory that doesn't exist. You can get this error on almost any Macintosh. If one of these computers tried to access one or more bytes beyond the total number of bytes in RAM, you see a bus error. You should never see this error on a Macintosh Plus or SE, because address references that are out of bounds "roll over". This means if one of these computers tries to access one byte beyond the total bytes in RAM, it actually accesses the first byte in memory. If you see this error on a Macintosh Plus or SE, it's reporting the wrong error or having hardware problems.

this error is most likely incompatible ram, corrupt ram, incorrectly inserted RAM, dirty contacts on the RAM etc etc etc
if u want to fix it.. fix your ram...
read above ^^ and think logically.. and u will solve the problem

[supernova777]

personally i think this error is caused either by bad ram, or using an innappropriate version of mac os install..

this is the same type of error that i got on my sawtooth when trying to install mac os v9.04 that was intended for the mystic/gigabit logic boards... ie: using a custom specific build of mac os on the wrong hardware.. using a restore/install disc that came with a different mac  = problems like this.. DONT DO IT you need to either use the exact specific install disc that came with your mac (verify the part number on the disc if need be) or you need to use a verified "universal" install, retail or developer network versions.

YOU CANT JUST USE ANY INSTALLER THAT CAME WITH ANOTHER MAC.. even if that other mac is an "IMAC", later version.. or u will have unexplained problems like this.

what i would do:
leave the mac alone for a bit u have obviously made the bug happen (from not having the hd partitioned correctly when using a hd bigger then 8gb with this mac) its from 1998 the hd it came with was under 8gb it was never intended to have a larger disk then 8gb.. even tho it will see a disk up to 120gb.. leave it be for a day or 2 . unplugged from the wall and it should power up the next time u try it.

check the ram, blow on the ram, wipe the connections on the ram to clean it, blow air into the memory sockets, reseat the ram TRY DIFFERENT RAM CHIPS IF U HAVE SOME, PC66 SDRAM WILL GIVE U A BETTER CHANCE OF SUCCESS OVER PC100 SDRAM.. PC100 should clock down + work but SOME BRAND/TYPES MAY NOT WORK PROPERLY + CAUSE PROBLEMS

install with the proper install or restore disks for the bondi blue imac..
either mac os 8.1, or 8.5 (to ensure the proper mac os rom file gets installed for the bondi blue imac 233mhz)

make sure u partition the hard drive into 2 or more partitions with the first partition being under 8gb OR USE A HARD DRIVE SMALLER THEN 8GB

after everything is working u can update to mac os 9.0 with a retail 9.0 cd and then to 9.1 and then to 9.2

[IIO]

you are too late as usual but we blame it on the timezone.

in my timezone there is always weekend, it´s funny isn´t it?

[supernova777]

if all else fails REACH OUT TO OTHER USERS WHO HAVE HAD SIMILAR PROBLEMS WITH THEIR BONDI BLUE IMAC

there have been many people posting here with the same machine
it is a wierd problematic imac moreso then any of the others..
u should EXPECT WIERD PROBLEMS and not be so EASILY DISCOURAGED

[supernova777]

u would have done better to buy a compact flash 8gb in size and use this with an IDE adapter on this machine... or to buy an 8gb Disk-on-module

along with some PC-66 SDRAM

no clue why u would buy an old 50gb IDE drive.. IDE drives were NOT GOOD back in the day.. often slow.. and the biggest contributing factor into old computers Sucking badly!!

[TGOTR]

u would have done better to buy a compact flash 8gb in size and use this with an IDE adapter on this machine... or to buy an 8gb Disk-on-module

along with some PC-66 SDRAM

no clue why u would buy an old 50gb IDE drive.. IDE drives were NOT GOOD back in the day.. often slow.. and the biggest contributing factor into old computers Sucking badly!!

I have done that in my amiga 1200, but some of those adapters are bootable on some systems, and not on others. I have a couple full width IDE to SD card adapters, maybe I'll give that a go.

[supernova777]

as long as u use 8gb media or lower + the adapter works u should be 100% good with that ide controller

if 1 byte is past the 8gb mark it will give u all kinds of wierd shit
see these threads:
http://forums.macrumors.com/threads/bondi-blue-imac-internal-hd-size-limit.63418/

https://discussions.apple.com/thread/5831973?tstart=0

http://www.ehmac.ca/mac-iphone-ipad-ipod-help-troubleshooting/11286-bondi-blue-imac-maximum-hd.html

One thing you should you know is that your system folder has to be in the first 8 gig's of your HD or the iMac won't find it. For example I have OS 8.6 on a 500mb partition, OS 9 on a 2GB and OS X on a 5GB partition and then a Documents partition for the rest of the 20GB.

see all bootable installations have to be in the first 8gb of the hard drive ^^

[TGOTR]

It really is a crap shoot if the thing is bootable. Going through my SD card drawer, I found a 32gig class 10 card I was using with my Raspberry Pi before I got a B+. I'll wait to post any more. Got a 12hr a day week comming...not gonna wana tear anything apart.

[TGOTR]

It really is a crap shoot if the thing is bootable. One I have booted well on my 486 DOS machine, but not on my dell winxp machine I was using as a file server.

 Going through my SD card drawer, I found a 32gig class 10 card I was using with my Raspberry Pi before I got a B+. I'll wait to post any more. Got a 12hr a day week comming...not gonna wana tear anything apart.

[supernova777]

It really is a crap shoot if the thing is bootable. Going through my SD card drawer, I found a 32gig class 10 card I was using with my Raspberry Pi before I got a B+. I'll wait to post any more. Got a 12hr a day week comming...not gonna wana tear anything apart.

u dont have to do that.. its optional.. the 50GB IDE drive u got should work aswell..
i can almost guarantee your problems are related to bad ram
either u have incompatible ram, or an incompatible combination of ram with different timings, or u have an incompatible combination of ram manufacturers/chip configuration or u have 1 bad/corrupt piece that has just gone bad with the passing of time somehow (it happens)

are u using more then one ram chip int he computer?
are u using 2 different unmatched ram chips together?

if u have more then 1 ram chip installed.. take all of them out.. make sure the contacts dont have any crap on them and reinstall only 1 ram chip.. to rule out the possibility of an incompatibility... and try to boot up then

think about it.. whats more likely.. the ram is bad. or the IDE Controller + logic board (which havent been touched.. ) has just magically gone bad.. everything the computer does goes thru the ram.. it cant boot without the ram... Duhhh the error indicated a memory error
clearly u have a memory problem to the point where the machine cannot reliably startup
as is the case WITH EVERY TYPE OF COMPUTER WITH A MEMORY PROBLEM be it PC or MAC or what have you

u could have a bad slot aswell where someone has physically bent a pin on the memory slot itself so you should experiment with differnt ram peices in different slots.. leaving one or the other slot vacant.. and u will find the problem!

[TGOTR]

The reason I don't think the ram is as much of an issue as you are making it out to be is because...when the machine turns on, it'll often POST which doesn't happen when there is no ram.

[supernova777]

its ok.. do what u want!! shelf it.

peace im done

[DieHard]

The reason I don't think the ram is as much of an issue as you are making it out to be is because...when the machine turns on, it'll often POST which doesn't happen when there is no ram.

Well, I was kinda sitting this one out, but bad RAM will often post. 

A Mac with no RAM behaves differently than a Mac with Bad RAM or a BAD RAM socket.

So Firstly, I have attached the original Service Manual with diagnostic procedures and the breakdown procedures.  Your lines on the CRT can usually be fixed by adjusting the Pots on the CRT, there are a few, so research which are Voltage, sync, etc.  and be careful, don't get a shock by poking around in the CRT, The pots are plastic and you should use a plastic screwdriver tip to adjust

Secondly, with this machine, try to use PC66 RAM, PC100 may clock down, but may give issues... definitely don't use PC133; also, try to use low density modules (lot's of chips and usually double sided).

[supernova777]

the reason i say the ram is because of personal experience.. when things get wierd.
u think the ram is ok .. and try everything else EXCEPT then i changed the ram and the problems just magically dissappeared..

like i said i had an ABIT BE6 slot1 pc motherboard that was the same way.. it always worked fine with PC66 ram, but using PC100 ram it would "work" but cause problems... strange errors all the time.. with no explanation.. so i realized that it needed PC66 ram.. and the problems stopped

but then i also realized that CERTAIN PC100 chips worked.. when used singularly.. but not in pairs
theres so many wierd things that can happen with ram.. and combinations of ram..
trust me RAM is often disregarded but its a very important part of computing like i said everything that happens goes thru the ram.. if u got the "BUS ERROR" the definition of that error is one of the memory controller not being able to properly access an address inside the rams capacity which is a ram error..
the ram might not be *BAD* it might work in another computer just fine.. but for some reason it doesnt like it in that machine.. in whatever combination of chips that is installed..
like i said before TRY booting with only a singular ram chip and keep changin the chips (and the sockets) untill u find a single chip that works + restores the machine to provide stability + reliable results

how many times do we have to say this before u give it a proper go TGOtR??

[TGOTR]

1) I will wait a few days before I try to turn it on again
2) I don't have PC-66 ram on hand. I'll have to track some down online.

If the ram is the issue, I'll be happy, then I'll try a IDE to SD card adapter I have.

[supernova777]

u dont HAVE to have pc66 ram..
this is what ive been trying to tell u.. u can try switching in + out different peices of pc100 in the meantime in an attempt to find a single ram chip that produces stability on the unit

some ram clocks down properly
some can be problematic
its trial + error

[TGOTR]

I don't have ram of this age sitting around. The ram I pulled out of the G3 I threw out when I got it because it was crusty and had some rust. I have older ram and DDR and up. Not much of anything from the turn of the century.

I do have the machine in pieces now, I am getting ready to look at the PSU for bulging or blown caps.