iMac G4 Dual Boot

It is almost ten years since Apple released the original flat panel iMac, introduced back in 2002 I remember first seeing them in the John Lewis department store.  At the time I was still hooked into the Wintel world but remember on seeing the iMac being seduced by the elegant simplicity of its design and its clear, crisp display.

iMac 15" Display

At the time I could not justify the outlay and so when what seems like a very short period later (10 years but who’s counting) I noticed one going for silly money on Ebay it was time to dive in.  The model I have is one of the earliest, a 700 mhz G4, 40 Gb HDD and 384 Mb of system memory.  It’s in lovely condition with very few marks and in full working order.

For the £40 or so pounds that I spent on it, it seems like a whole load of engineering and design goodness and doesn’t to my eye look at all dated.

Somewhat foolishly the previous owner had not bothered to erase their files so I quickly set about securely erasing the drive and repartitioning it.  This machine is one of the last that can boot into OS 9 as opposed to the running the Classic environment within OS X and I wanted to set it up as a dual boot machine as I need an OS 9 machine for some of my retro work.

Rear View Of Display

Using the OS 9.2 install disk that came with the iMac I successfully installed the OS onto a 10 GB partition and then installed OS X on to the remaining 30GB’s.  The OS X install disk that came with the machine was version 10.1.2 and to my surprise includes Internet Explorer 5.  Having not previously owned Macs from this period (my first Mac was a G4 Mac Mini bought in 2005) I hadn’t realised that Safari had only surfaced a few years later.

I was soon on line via ethernet and took all the available updates for for both OS’s which downloaded and installed without a hitch.

The iMac feels pretty snappy in use, I’m tempted to replace the 128 MB stick of ram in the user slot with 512 MB and I have an Airport card on the way to slot in to the base.

The included mouse was non functional and the keyboard was horribly yellowed but I have plenty of spares so apart from those issues I am absolutely thrilled with to have such a lovely iMac, the plastics of the main unit and LCD are very well preserved.

iMac G4 15"

I’m now going to have a play with OS 9, purely out of curiosity as I have no real experience of it and then try to decide where I can display this gorgeous machine in all its glory.  I can’t imagine hiding it away it would seem too sad.

(Update)

Ignoring all the prevailing advice I thought I’d have a crack at installing OS X Leopard on my newly acquired iMac G4.  As it stands it falls some way short of the minimum specifications recommended by Apple and indeed when attempting to install the OS the process recognises this and refuses to continue.  There are ways around this, including this method of fooling the installation software into believing the target machine meets the specs required.  Please note the link to Leopardassist on that page appears to be broken, you can find it here.

Leopard on iMac G4

Another method is to fire up the target machine in target disk mode (press and hold ‘T’ during boot) whilst connected by Firewire to another Mac that will run Leopard.  You can then run the installation disk from this second machine and instruct it to install onto the original machine which will be recognised as a Firewire drive.  I chose this later method as I have a Mac Mini G4 which I knew could run Leopard and given that it shares a G4 processor with the iMac would I believe offer the greatest chance of success.

The process went fairly smoothly, albeit slowly though the later was no surprise.  The iMac has booted into Leopard quite happily and although it’s clearly running more slowly than a more modern Mac it’s quite useable.  It’s my intention to upgrade the memory which I believe will make quite a difference, 384 MB is really not adequate, in the meantime I’ve turned off all of the dock animation effects and have ensured there are no background widgets running.

I thought it might be amusing to try Geekbench so I ran it in 32-bit mode on the iMac G4 and on my Macbook and MacPro just for comparison. the latter two machines ran the benchmark in a couple of seconds or so:-

MacPro 2 x 2.66 GHz Dual Core Xeon 5 GB Memory – 5538

MacBook 2.4 GHz Core 2 Duo 2 GB Memory – 3354

iMac G4 700 MHz 384 MB Memory – DNF (45 minutes elapsed before I sympathetically terminated the process)

So I’ll see how the iMac gets on with some more memory and if it becomes obvious that Leopard is too taxing I shall revert to Tiger.

(Further Update)Have now swapped out memory in the user slot for a 512 MB stick giving a total of 768 MB.

Ran Geekbench again and it completed in roughly six minutes with a score of 345.

Geekbench Score 345

A UK Dial Up BBS Is Born

A frustrating few days on the Retrochallenge front.  Still no luck in reviving the FDD in the Epson PX-16.  I found some isopropyl alcohol and gave the heads a thoroughly good clean but still no joy.  I ordered the parts I need to build a cable for the RS232 port but they haven’t arrived yet.

I then moved on to try and build a cable that would work with the modem that came installed in the PX-16.  The modem has an RJ45 socket, all the modems that I have owned in the past have come with an RJ11 socket and despite my best attempts I was unable to make a cable for it that would work.  After a considerable amount of time, cable twisting and no dialtone messages I gave up and moved onto something else I’d been meaning to do.

One thing that has struck me since becoming involved in retro computing is that whilst there’s plenty of hardware still out there to enjoy I really miss the more transient elements.  As an example one of my fondest memories of my early computing experiences was using an acoustic coupler and a teletype and connecting for the first time to a remote machine.

Moving forward to the BBS scene and the excitement of dialing machines all over the world, (what my parents made of the phone bill I don’t know) it’s these such experiences that I really miss.  There are of course plenty of BBS’s out there which you can connect to via the Internet but that doesn’t cut it for me from a retro viewpoint, nor are they of any use when it comes to most of my retro hardware.  There are also some dial up systems out there but none that I can find within the UK.

I therefore decided I should try and set up a dial up BBS, if for no other reason than for testing and hopefully connecting some of my retro hardware.  Initially I toyed with the idea of using a Mac Mini G4 that I have in storage, it has a built in modem and the ability to run OS 9.  However I found it quite difficult to find suitable software and therefore turned to my Windows 98 system.  I dug out a Diamond Supra Express PCI modem and installed it and went on the hunt for some BBS software.

I settled pretty quickly on the excellent Synchronet for which the author has also written dial up support. I installed it, connected the modem to a spare phone line that I have at work and after some tinkering had it up and running.  I used my MacMini G4 to connect via another line with Zterm and it all worked very well.  I now need to spend some time configuring things properly and see no reason why I can’t leave this thing running for others to use.

The phone number for now is 01582 600882 (+44 1582 600882) if you want to try it, there’s very little there at the moment but I hope to get some stuff added over the next few days.  The ultimate goal would be to get the BBS running 24/7 on some retro hardware.

I might be fortunate enough to acquire an acoustic coupler for the Epson PX-8 before the end of the month, I already have a suitable retro phone that will fit the cups, so hopefully I might be able to connect the PX-8, now that would be a challenge!

Water, MacBooks and Splodgy Screens

Somewhat foolishly I wandered into the bathroom to show my wife something on my MacBook whilst she was in the middle of bathtime with the children.  With a cry of ‘daddy watch this’ my son jumped and with the help of gravity, proceeded to displace a fairly large amount of water in my direction.

As it lapped over the screen and keyboard of my MacBook time seem to stop momentarily before I suddenly processed what had happened, powered  the machine down and began frantically mopping it with tissue.  A few hours later I gingerly turned it on and was relieved as it immediately began to boot.  However I then noticed that about a third of the screen had a huge bright white splodge on it.

I powered it down again and searched online for ‘bright white splotch macbook screen’ and found this blog entry.  I read through the author’s similar experience and set about stressing my MacBook with as many processes as I could think of.  Soon the fans were whirring away and the unit was warming up nicely.  I propped it up next to the radiator and left it for a couple of hours.

On return the splodge had definitely shrunk but I decided the give the unit a rest from its workout, I have been repeating the process and I’m pleased to say the screen has nearly fully recovered.

(Update)  Another couple of days have passed and I’m now just left with a couple of dots which I’m sure will also disappear in due course.  Phew!