Tag: winuae

Cleaning Amiga floppy disks – success!

It seems an extremely long time since I’ve updated this with any Amiga stuff, so I thought I’d do a quick update.

It’s a disgustingly wet August Saturday, and I’ve recently been accumulating more Amiga disks off ebay, and imaging them with the good old Greaseweazle, which is still going strong.

As part of the process of imaging them, I’m also grabbing the file listings off the disk, and putting them into a database. This is, so far, a long laborious procedure, and at the moment, I don’t know what purpose it’s going to serve, but doing this at least gives me a chance to test that the disks have ripped successfully, at least to a point.

Anyway, as the afore-mentioned weather is cack, I thought I’d spend an hour or two goiung through some of my recent images and getting rhe file listings. Anyway, after about 4 disks, I got the dreaded “read error” message one one of the disks I’d imaged.

Not fun. I loaded up hxc to check the disk image in a more thorough way, and sure enough, there were two bad sections of the disk, one on each side.

I went through and checked the disk, and there they were… mould spots.


Ugh. The bain of any old media collector. It’s just something that happens. These disks must be… oooh, dunno. 30 years old now, so any slightest but of organic material that’s crept on the disk in that time has obviously been taken over.

I’m surprised I didn’t pick up on this when the disk was getting images. A mould spot this severe would have definitely created a tell-tale noise when the disk was being imaged – a definitive click-click-click as the mould spot makes contact with the head, about once every 1/20 of a second.

Anyway, I had hopes of resurrecting this one. I took a tiny bit of IPA on the end of a cotton bud, and very lightly rubbed the surface. You don’t want to put any pressure on at all. The surface of the disk needs to be perfectly flat, and any slight ripple in the surface will render the disk useless and the data gone.

I didn’t get any pictures of this, so I don’t think you need much of an imagination to picture what I did.

Thankfully, the mould was no match for the IPA, and within seconds, it was lifted. I used the dry side of the cotton bud to remove any possible residue, and left it to dry for a couple of minutes. Obviously, IPA dries on its own really quickly, but the last time I tried this, I must have put far too much on and ruined the disk, and possibly didn’t help the drive much either.

Of course, the proof of the pudding is worth two in a bush, so did the disk actually work after I’d tried all this?


Oh, I’d say that was a success.

As a side note, I know I was holding the disk myself. I’m aware that you can buy little disk cleaning cradles that will hold the shutter open for you while you do this. I actually have one, but didn’t have it to hand when I did this.

My first day with the Greaseweazle

No, I haven’t gone and got myself a new girlfriend.

Instead, I’ve invested in a little PCB known as the Greaseweazle. And I’m sure I’m spelling that incorrectly, as I think I’ve spelled it about 4 different ways in the last hour alone. Basically, it allows you to create images from floppy discs, most notably, Amiga disks As you can imagine, this is somethingthat’s of interest to me, as I’ve been an Amiga fan for…. ooh, almost 30 years.

As I ‘m sure you’ll be aware, I’ve spent the last year reliving some of my amiga memories, especially afterresurrecting my old machine’s hard drive, and wallowing in the nostalgia of the old photos and music that was on there. there was one area that was, sadly, locked away. I had no way of converting my existing floppy disks to a readable format. There had been rumours that an Arduino based all-in-one USB device was coming onto the market, but the manufacturer is having difficulty with getting the parts, so I don’t think that’ll be available any time soon. While randomly browsing the net on Friday, I saw this thing called the Greaseweazle, and it was only £20. Yoink. I wasn’t even drunk.

I paid a little more to have the cables included. I’m sure I have loads of old floppy cables, but no idea where. Oh, and I also got a floppy drive cheap enough off Fleabay. again, there’s probably half a dozen kicking around this roomy mansion, but knowing I wouldn’t find one when I actually wanted one, I just plumped for buying one.

Days passed by, and they both landed through the Mercuryvapour Towers portcullis with a thud.

It seemed extremely easy. Connect the three wires, download the software, run it, aaaand…

Z:\greaseweazle-tools-v0.38>z:gw info
Host Tools: v0.38
Device:
Not found

Turns out all I had to do was switch it over to a different USB port, and I was good to go. I think that USB port was dodgy anyway. Within seconds, I was imaging my first disk!

This was purposely a brand new blank disk, as I knew at least it’d work. It did, I think, as I shortly had a 70Mb(!) floppy image. At this point, I’m still not 100% sure why the size is so large, some 60 times bigger than a regular floppy disk. All I can garner from the manual is stuff about flux, and magnets, and it’s all going over my head.

Anyway, the initial test passed. I decided to try with an Amiga disk… Now, I didn’t have many of my own to try, so I dug into a box of random disks I bought from a radio rally several years ago. This one in particular intrigued me…

No, they’re not pics of ham, but HAM was an image format on the Amiga that used special trickery to get more colours on the screen than the chipset could natively handle.

They’re mediocre by today’s standards, and the pixel-perfect screengrab probably doesn’t do it justice, I’m sure it’d have looked infinitely better when smoothed out via an RF signal on a CRT telly…

And that’s really where the fun ended. I tried other disks, and instantly found a problem. As I said, these disks never belonged to me originally, so I have no idea how they were stored, but they made some EEEVIL noises….

Initially I thought it might have just been the drive slipping. The drive was off ebay, as I mentioned earlier, so this was another unknown factor. The date code on the drive itself was 2006, so it might not have been used for 16 years. I left it to do its thing. It might work, it might not.

I fired up the image, and of course, it didn’t. Dammit. I was about to give it another go, but I thought I’d check the surface of the disk…. Oh.

Yeeeah. Those patches shouldn’t be there. That’s where the magnetic layer is missing from the disk, rendering it completely and utterly useless. Well, shite. This was disk 1 in a 3 disk software package, so they’re all pretty much useless. I checked some of the other disks, and I can see what looks like mould on some of them, so I’m guessing they weren’t stored in the best of locations. A friend, Rob, has pointed me in the direction of a floppy disk cleaner, which I’ll probably end up getting, along with a bottle of Isopropyl alcohol

Damn it. All this time and effort, and all I have to show for it, is a ladies’ bottom. I’ve had worse days.

My Amiga drive! It lives!

Today is a joyous day. well, yes, technically, it was yesterday now, but quite unbelieveably, my Amiga drive survived, and I’m over the moon to confirm that it actually works.

I know, over the last few days, I’ve promised some type of fanfare, or some type of great reveal about it. I decided that it would just be the worst thing, that I spent the time setting up a live stream, getting all excited, and finding that the drive didn’t work, or not spin up, or anything like that. Obviously, I’m typing this now, so I can confirm none of this actually happened. But still, I decided it wasn’t worth the risk.

On the off-chance, anyone is here to find out how to convert an A1200 hard drive to a machine readable format, let me give you a quick run-down. Now, unfortunately, despite me slamming the “PrtScr” button for all its worth, I totally forgot that UAE and Dropbox don’t play nicely when it comes to taking screenshots, so sadly, I didn’t get any of the procedure, but it was unbelievably painless. The one thing to remember is that you *must* run WinUAE as administrator, otherwise the drive will appear with [ACCESS DENIED] next to it.

I initially had a panic about having to set the amount of heads and cylinders, but thankfully, this never materialised. Despite the drive’s age, it still had an automatic config, and WinUAE picked it up correctly. It’s then just a case of creating the image fine, and sitting back while it chugs though.

I was almost certain there was one bad sector on the drive, so I watched with baited breath, as the bar chugged its way across the disk, and eventually to the end. Nothing reported, we were all good to go. I hoped.

I mounted the image, held my breath, and pressed “Start”…

It’s a picture of a street light. I have no idea where this streetlight was (EDIT: See the end of the post). It caused me mto let out the biggest yelp of excitement in a very, very long time. This was the image I chose to display, way back in 1996ish, while my amiga went through its “startup-sequence”. It looks low-quality now, compared to the megapixels of 2021, but back in the day, to have a full colour image showing on your TV was quite a sight to behold. The image is slightly broken, as it turned out I was using the standard non-Commodore / Cloanto ROM that comes with WinUAE. It proved, at least, the drive image worked.

A quick switch over to a better ROM, and oh-my, away we went. This is where I would have left it so many years ago.

Turns out I was slightly wrong in my years, about the last time it booted up. Turns out the last time it was properly used was December 2000 – in one of the first posts I ever did on this site, I slapped this image up… (EDIT: Hopefully I’ll remember to fix this at some point, oops)

I’d forgotten about this, and was surprised to see a webcam image (oddly not mine, an image I saved of a mate and his ex from back in the day), with a timestamp of 2000, then yes, I had flashbacks of connecting a modem to my Amiga’s serial port, then transferring data using the two landline numbers we had back in the day. While this allowed SOME data to come off, the speed, and technical issues meant that I was only able to pull off a few megs of info, nothing close to the funn contents of the drive.

There was also a brief connect of the computer back in the mid 2000s, but this was only for a few minutes, as I’d discovered the graphics failure my Amiga had suffered had got considerably worse. From what I’ve seen, this could be leaky capacitors, but to me, at least, at the time of typing, the value of keeping my Amiga, all lived in the data stored on this drive. My worry about never being able to power it on again, all came from the worry about not seeing what was on here.

Amiga emulaton has came on leaps and bounds since I first heard about UAE – back when its name stood for “Unusable Amiga Emulator” because all it would display is a black screen. It’s 2021 and it’ll play everything I’ve thrown at it, but most importantly, I’ve got my hard drive. I can access everything that was on it. I’ve already got several security copies of the image on servers all around the world (y’know, just in case I was to listen to some .mods during the apocalypse), and the whole thing just feels like the end of a 25-year chapter.

Saying that, it also opens a new one. Granted, now, 240Mb is barely any information at all, but it’s not the size, it’s what you do with it that counts. The next few days will be just exploring the drive, and seeing just exactly what has survived over the years

EDIT: Naaaah. You won’t have believe that I’ve just found, because I can’t believe it either. That image above…. STILL EXISTS on the internet. Now, all I have to go ff was the name, SUNSET.JPG. Not really very descriptive. Tonight, for some unknown reason that’s not even coming to mind, I started doing a Google Maps wander around Los Angeles. I noticed, concidentally, that the lighting columns looked very similar to what was on my Amiga’s startup screen. Just for giggles, I typed into Google Image search “Los Angeles Sunset 1996”. I incremented down the years, and sure enough, when I reached 1992, up came the original image…

So, I feel I absolutely must give credit to the fine folks at the City of Los Angeles Public Works – Bereau of Street Lighting (Updated link March 2022 – you have to click the “General Interest” section now to see it) for this almost 30-year-old image, and I hope you don’t mind me using this image for what is, essentially, one man’s lonely deep-dive into his own braincells during a desperately lonely lockdown period. Thank you for keeping it alive.