Hands on alignment of an Amiga disk drive 

Super! I repair my Chinon FZ-354 with this tutorial! Thank's !

Helpful video thanks, I will try to fix my A600 drive tomorrow :)

Great video! Thank you!

Great video! a couple of weeks ago I just bought a broken external drive on ebay listed as broken, it powers up but does nothing... I am gonna do what you did here :)

😃Wow lesson learnt on those screws! Glad to hear its nice and clean and maybe too clean without much grease! Looking forward to receiving it! Many thanks Glen!

Great Video Glen. I’ll be referring back to this vid when u tackle a few of my own Amiga floppy drives.

Commodore didn't make it easy for code in a custom boot block to know what drive it has been booted from. This is how I did it back in the day. The OS does give you a pointer to the IORequest for the boot drive. Then the trick is to loop through all possible floppy drives, with a loop index and open a new trackdisk device for each. You can then compare each trackdisk device's IORequest's io_Unit pointer to find the one that matches the io_Unit pointer for the IORequest passed in. The index for the current trackdisk can be used as the drive index that the floppy was booted from.

I learnt a lot from this video my friend :).. I wont be touching those screws any time soon lol. I've never used the disk section of the Amiga test kit either so I know how that works now too. Cool :)..

it would be good to put lock tite on the screw tops after screwed in and corrected

I like your videos

You will never guess what I have lol😊

Is the lower head soldered? I mean, what would it take to re-attach it?

I have a pile of 3.5inch floppy drives on a shelf. About 10 of them. Various makes and models. Do you want any? They were out of old PCs so not specifically amiga drives.

I'd suspect that someone else damaged the lower head, possibly when the arm broke so they stripped it down to sort it and removed the broken arm :( Shame as if that was the only fault, sure a 3D printed arm could be made.

I searched for "Amiga test kit" on AmiNet and found nothing. Where can I download this software to try and fix my A1010 drive which fell from the desk hard on the ground?

where does the term cylinder come from ?

Hola Nico, te consulto. Tengo la necesidad hacer una distro linux pequeña para programar en ZX Spectrum y Commodore 64, con Emuladores como ZEsarUX y Fuse para Linux. Me podrias dar una mano o de donde se podria buscar info para poder hacerlo. Yo tengo una distro hecha con windows xp (con nlite), para poder hacer esto mismo con ZEsarUX, Fuse y ZXSpin, pero el problema es que no se puede COMPARTIR POR TODOS LADOS, POR QUE ES WINDOWS (por copyright), y quisiera armar algo para que sea libre. Armar un linux pequeño que funcione en 32bits, cargue de forma directa alguno de estos emuladores y listo. No necesito mas. El unico problema que puede existir es que los emuladores necesitan debian. A parte de eso, que como te digo, necesitaria que sea para 32bits, para que en PCs viejas se pueda usar sin problemas. Los 2 emuladores no tienen practicamente ninguna exigencia de hardware. Como ultimo comentario, si es para programar en Codigo maquina para z80 o basic para ZX Spectrum 48 o 128k y MOS 6502 Assembler. Es para eso especificamente, pero la distro es para no usar hardware viejo.

Who thought that putting the lower head on top of the upper head in the head calibration tool is just wrong?

eBay profit is easier when you buy actual untested lots, or lots that are just defective but no serious repair has been attempted. Once you go down to parts or even components, the success rate goes down quite a bit. Buying some collectors loft after they passed away and the estate selling the whole collection is obviously going to give you much more good stuff than the bits that people have left over after they assembled all the working gear and sold that as working.

I recently binned one of these drives as the ribbon cables were ripped off. Wouldn’t care but it was sat there for months.