Upgrading the hard disk in a G4 iMac

I bought this iMac new in 2003 and used it as my main machine for some time. I was writing software at the time, had a number of products out, but it wasn't my full-time business then. Eventually it was packed away to make room for newer machines.

Isn't it beautiful? OSX 10.4 is a really great version of the operating system, and this is the time when iTunes was at its height. I'd long had it in mind that it would make a great jukebox for kitchen or bedroom, with its great Harmon Kardon speakers with optional subwoofer. 

To be useful again, mine needed:

• Wireless card (I never did fit one)
• Hard drive upgrade* (the standard 80Gb one isn't big enough for half of my music collection)
• Replacement CD drive** (mine had broken somewhere along the line)
• New battery (small alkaline battery for keeping the time and date)

[Edit] since first writing this post, I've also added:

• a set of JBL Creature speakers 
• 1Gb RAM

The parts I expected to be hard were easy, and the parts that should have been easy were hard. I'm documenting my experiences here because there are some things that may be useful to others.

I'd already collected some of these parts, intending to do the work one day. Last week something reminded me of Cro-Mag Rally. It's a great game and the Mac version is now free, thank you Pangea. The OSX version needs a PowerPC mac, and my clamshell iBook proved too slow. so out came the G4 iMac.

 It wasn't remembering the time, which of course means that the battery is dead, and a battery inside an almost 20-year old computer is bad news. So perhaps the time was right to carry out those other upgrades at the same time.

The wireless card and adding RAM are pretty much a trapdoor job (well, behind the stainless steel cover, which has 4 captive crosshead screws. Very simple.) No worries if that's all you have to do.

NB, 10.4 (Tiger) allows connection with WPA2, which is what I needed at home. and the Airport Extreme is working fine. 10.3 and earlier don't have the WPA options, only WEP. Whether those earlier systems can be made to work with a modern router, I can't say.

I had to go deeper. You need to go one layer further even to replace that battery.  This is the new hard drive and replacement CD drive. The latter came from an eBay seller, used but working (allegedly). The HD and my new battery are from the BookYard, I recommend them (as a UK buyer), their website makes it easy find the right parts for your particular machine. The service was efficient and swift.

I have read that delving more deeply into the machine is an advanced task and I was expecting it to be harder than it really was. It's actually very simple. I'm not going to give instructions, there are plenty elsewhere. That's the old CD/HD assembly coming out, note the horrible amount of dust in there. With those out, it's possible to vacuum out the fan and all of the nooks and crannies, taking anti-static precautions.

One point of uncertainty for me was about the jumper settings for the new HD and CD drives. The replacement CD came with a single ribbon cable with a 'tap' halfway for the HD. The existing ones each had their own cables (there are two sockets on my board). I suspect that the CD drive came from a different model (there are several variations and three with 17" screens - 800Ghz, 1Ghz and 1.25Ghz.) Besides the difference with the cable, the little metal screen at the front was slightly different and I had to nab the that part from the old old drive.

Back to the jumper settings. The replacement CD drive came jumpered as a slave, which may be consistent with it being on the same ribbon cable as its HD. With my existing drives, each had their own cable and each was jumpered for 'cable select'. I decided to use my existing cables and jumper both drives for cable select as before. That worked.

NB - if you're going further than the trapdoor, there's some thermal paste that you must clean up and apply new. See the iFixit article for details.

 There's the replacement battery in and with everything back together, it chimed and as expected there's the icon for 'no startup volume'.

This is where the games really started. The new CD drive worked and I expected it to be easy to make a fresh OS install on the new blank drive, but I had a very frustrating time.

I have numerous discs from various computers. However, not all were readable and some were upgrade discs rather than install. Those that I downloaded from the web and burned to CD were either not bootable or simply would not boot. (If you're reading this and know why, please leave the answer in the comments.)

I still had the drive that I'd taken out, and 'restoring' or cloning an existing volume to a new one should be very easy using Disk Utility, which comes on every system and every bootable install disc.

At first I opened up the computer again and plugged in the old drive in the CD drive's socket on the motherboard. This worked, I could boot from it and perform the 'restore'.

However, it didn't work first time - the clone on the new drive wouldn't boot. I had to try again and again. Because my first method was a little makeshift, I devised this - it's a firewire  'caddy' made from an old LaCie firewire hard drive. I opened it up, unplugged its own HD and plugged in my computer's HD and voila! It plugs into the reassembled computer and can boot the computer (you can boot from a firewire external drive but not a USB one).

The old drive had three different versions of OSX installed on different partitions. Back in the day this allowed me to boot into  OSX 10.2, 10.3 or 10.4. Very useful for testing my software.

My first attempts at cloning the 10.4 partition failed a couple of times. The first time I thought it was because I hadn't checked 'erase' before doing the copy. But I don't know why the second attempt wasn't successful.

I'd read mixed opinions about the maximum size for the boot volume with this machine. I thought this might be the problem for a little while but I can tell you that I have a 500GB drive with a single partition / volume, and that it now boots.

For my final attempt I tried booting into 10.3 (Panther) and using its version of Disk Utility. (This I think being the system that came with the machine). I don't know whether this made the difference, or whether it was because I reformatted the new drive at that point. (It had come apparently formatted, so I hadn't bothered before). That new clone of the 10.3 volume did successfully boot. After that I successfully used an upgrade disc to take it to 10.4, and then a multipart update downloaded from the Apple developer site to take it to 10.4.11

Now I have a mac with a system that really doesn't feel out of date, a version of iTunes (7) which is a joy to use, a 500GB drive, wireless (10.4 allows me to connect with WPA2). A useful and usable machine, and one which looks amazing.

[edit]

I've now added 1Gb RAM. This is very cheap now, and keeps it responsive. Tiger is a newer system than the one the machine came with. I was starting to get lack of responsiveness with very little running.

I've also added these 'Creature' speakers. They were sold as 'made for mac' when the G4 was sold new. I really wanted a white set, but this set was an absolute bargain. Replacing the drivers in the satellites is another story. The original speaker cones are destined to disintegrate, and these ones had. Now that I've replaced them I'm not entirely happy. I'll live with these for a while. I will probably get a broken but nice-looking white set in the future, and repair the little speakers with better replacement drivers.




* Why not a SSD? I had intended to do this for some time. But a ATA/IDE/PATA  SSD isn't so easy to find, and I read that the limitations of the ATA system mean that the speed benefit is lost. A brand new spinning disc is cheaper and still quiet. So that's what I went for.
** I refer to the drive as a CD drive in this post. Actually it's a combined CD reader / writer and DVD reader, known as a 'superdrive'.

2018 begins with a meltdown

We have started the year with the kind of story that TV and radio love. "Nearly all computers worldwide - and many other devices - have been exposed to security flaws which leave them vulnerable to attacks by hackers" (direct quote from BBC News).

Tech correspondents were in their element, "The CPU is the 'brain' of the computer, if you like, and if someone can read everything in your brain, then they can read all of your sensitive information.." (I paraphrase only slightly).

The culprits are fiendishly-named Meltdown and Spectre.

Intel's response was the amusing classic, "It's not a bug it's a feature". The detail of it sounds much like a small boy caught red-handed, "I didn't do anything. Anyway, the others did it too."

In a nutshell, meltdown is easy to fix and has been. If your High Sierra system is up to date then you should be ok. Spectre is hard to patch and hasn't been so far but it's hard to exploit. (see Further Reading for more details.)

Install updates when available. And don't have nightmares.

Further reading:
Opinion on Intel's response:
https://www.theregister.co.uk/2018/01/04/intel_meltdown_spectre_bugs_the_registers_annotations/
Thorough and understandable rundown of the problems:
http://www.theregister.co.uk/2018/01/04/intel_amd_arm_cpu_vulnerability/
The BBC (who should know better) sensationalising and enjoying the chance to have a dig at Apple users:
http://www.bbc.co.uk/news/technology-42575033
XKCD:
https://xkcd.com/1938/

Effects Designer for LIFX and Hue bulbs

Here is the first look at a new drag and drop lighting effects designer for our Hue-topia and LIFXstyle light controllers.



You'll be able to create more sophisticated versions of the false dawn / dusk or go the whole hog and create a 24hr daylight simulator (blue hour / golden hour etc)

And you'll be able to get creative and design mood effects such as flickering fire, colour cycling for party effects or mood.

I think all bases are covered, you can set the length of the whole cycle from 1s to 24hrs, whether it's 'one shot' or loops, the length of the transitions.

You can apply effects to a single bulb, groups or rooms, manually or on schedule.

This feature is now in version 2.0 (beta) of  LIFXstyle and Hue-topia

Retro button style in OSX cocoa

While developing a 'breadcrumb' or NSPathControl type class, I created some buttons programmatically -  initially very quick and dirty;  [[NSButton alloc] initWithFrame] and not bothering to set anything.

This may be the first time I've ever done that because I wasn't prepared for what happened:

It takes me back to Amiga Workbench, and some interesting times that I had to use Windows at various day jobs.

It makes sense; I haven't set any button type or border style. But I would have thought I'd get the basic push button (the ones you get for OK and Cancel in alerts etc).

This isn't a complaint at all, I'm just bemused to see OSX drawing these retro-looking buttons.

[Update]  it's not looking bad...

New theme in Screensleeves

Welcome to the new 'Ambience' theme.

It goes against the idea of a screensaver a little to have a static coloured background (I've been toying with the idea of adding a little 'Ken Burns' to the background, but this would have little benefit if the album cover is fairly homogenous in colour.)

But there is a fade to black and repositioning of the album cover and details every 30 seconds, which existing users will be familiar with. And if you're listening to individual tracks rather than complete albums or audiobooks, then there's no problem as the coloured background will change significantly every few minutes. Plus as now, when the music stops you either get a black screen or random artwork (whichever you choose) so no problem there.

Above all, it just looks so cool. I'm so excited about it and love using it.

[Update] This theme is now available in Screensleeves Pro v5.1.  You can download and use the Pro version without paying, just certain Pro features will be disabled before you obtain a key.

Scrutiny on Tiger

This is Scrutiny running and looking good on 10.4 (Tiger).

It's looking particularly good to me tonight because I've just spent the best part of the last 24+ hours trying to track down a very elusive bug, only apparent in 10.4 and without the benefit of developer tools on this machine due to lack of free space.

I was vexed to find that I'd introduced said beastie at some point (into both Integrity and Scrutiny) without spotting it until it was reported yesterday.

Will shortly have fixed versions of both apps uploaded followed by a good and much longed-for night's sleep.

I've noticed a couple of other minor cosmetic problems, which I will enjoy working on. It's very good to know that people are still using the older-but-still-lovely systems!

The beautiful snow leopard

[post originally written after the release of Lion and copied from a different blog system]

Isn't she gorgeous? I'm now appreciating that the operating system she represents is beautiful too.

I've found plenty of things about Lion [edit: and now Mountain Lion] that I really don't like.

I found a secondhand machine for day-to-day use and now that I'm back on Snow Leopard I love it.

Something else has made me think about users of older systems too. A user of my new product Scrutiny asked about ppc support. The answer is that I have been forced to move to XCode 4 in order to find and fix Lion problems. However, XCode 4 doesn't allow me to build a version which runs on ppc machines. Therefore I released the beta as intel / 10.5 upwards.

It seems that maybe I can use XCode 4 to build for ppc and all of these things have made me think that it would be a good thing to support older macs and versions of OSX.

Rather than try the XCode 4 conversion (I've found messing with build settings to be hair-tearingly frustrating) I may instead rebuild the products using XCode 3 and work in that.

Either way, I'm aiming to support Integrity and Scrutiny on ppc and intel, 10.4 and above if possible, or 10.5 and above if not.

[update: I'm now able to build my apps as a single version to run on 10.4 updwards and code-sign them for 10.8's Gatekeeper too.]