ST-238R ST-225 Megafile 20 30 MFM RLL

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Lando_C
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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Lando_C » Wed Dec 03, 2014 11:10 pm

Oh and here I am back after many years.. just bought a megafile 30 and am about to dig otu an ST from storage...
weird how time flies
UK 1040 STF, SE kbd, SE tos 1.04, gotekHxC+floppy B internally, ATX psu on the side
DE Mega 1
SE Mega 2, no keyboard
SE Mega ST 4
Megafile 20 with 2 MFM drive mechanisms (80+20 meg) in hacked case, ATX psu on the side
Megafile 30
Megafile 60
SM124, SM125, finlux 19 inch TV RGBscart
PC Intel i5 8G ram many disks
5xRaspberry pi

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby exxos » Wed Dec 03, 2014 11:12 pm

If you have not been around for a while , you might not have heard the tragic news about alison then ?
4MB STFM 1.44 FD- VELOCE+ 020 STE - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - various clutter

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Lando_C » Wed Dec 03, 2014 11:25 pm

I didi read the announcement; tragic in deed. :-(
UK 1040 STF, SE kbd, SE tos 1.04, gotekHxC+floppy B internally, ATX psu on the side
DE Mega 1
SE Mega 2, no keyboard
SE Mega ST 4
Megafile 20 with 2 MFM drive mechanisms (80+20 meg) in hacked case, ATX psu on the side
Megafile 30
Megafile 60
SM124, SM125, finlux 19 inch TV RGBscart
PC Intel i5 8G ram many disks
5xRaspberry pi

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby paul92706 » Thu Dec 04, 2014 7:13 am

exxos wrote:If you have not been around for a while , you might not have heard the tragic news about alison then ?

It really just seems like yesterday! still brings tears to me ol' eyes. :(
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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Rat boy » Thu Dec 04, 2014 8:14 am

Never heard the news of Alison..? Or why someone would post years after my last post?

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby exxos » Thu Dec 04, 2014 8:36 am

4MB STFM 1.44 FD- VELOCE+ 020 STE - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - various clutter

http://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
http://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.
http://ataristeven.exxoshost.co.uk/Steem.htm Latest Steem Emulator

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Rat boy » Thu Dec 04, 2014 8:53 am

Oh, it happened 3 years ago, rest her soul; When I was pillion last weekend on a BMW R1100 (like the one the police use), 3 drivers drove like idiots at the bike or ignored it. That bike is heavy, it will not end well in a collision. And the road was slippy, to make things worse. My thoughts are with her Family. I wasn't aware, but why it is brought up years later, I dunno, because I didn't know her.

* Thanks for informing me, but I had no personal connection to this person, apart from her telling me off on this site!

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby 19rsn007 » Mon Jun 27, 2016 12:41 pm

Hello....sorry for bumping this old thread.

I have bought a megaST with megafile30 about a year ago.
The harddrive was gone but I was offered an ST-225 harddrive about a week ago.
Is there any chance this drive can work in my megafile 30 ?

The adaptec chip on my megafile says AIC-300c & AIC-010F

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Greenious » Tue Jun 28, 2016 10:30 pm

Bumping old threads is prefered if the post is relevant. Kind of automatically gathers all info at the same sport...

I guess you have read the thread?

I haven't used these drives for closer to 30 years, and I must admit my knowledge of them is limited to say the least (My first HDD was a 50 MB SCSI for my ST, and I have only sporadically come across old Megafile units over the years).

However, the ST225 was probably one of the most sold drives in history, and is an MFM drive afaik. Megafile used RLL drives. Now, that does not mean it won't work, even though some say MFM drives work unreliably as RLL drives, but it does mean the formatted capacity of the drive will increase 50%...

There are more threads concerning these old MFM/RLL drives, aswell as wikipedia. Please, do search and you will find answers, because these topics has been covered before, in as much depth you could ask for.
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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Nimrod » Fri Jul 01, 2016 6:18 pm

Hi guys! New here. My main machine back in the late 80's early 90's was a Atari 520ST (M = modulator, USA 1986 model) upgraded to 1MB, TOS 2.06, a SM124 + overscan and a Megafile 30. I was at the end using it mainly as a terminal emulator for dialing in to University UNIX and VMS systems.

Long story short the Atari ST died ca 1995(?) and as a poor student prioritized beer over a new Atari.
Fast forward to 2016. Found an add for a "Atari computer". Bought it for 75€. Did not get what I expected. A true original 520ST with boot roms and TOS on disk. Single sided DD + an extra SM124.

So now I will attempt to restart my Megafile 30 to rescue any chat logs and important files (course work + porn?).
I still have my old broken Atari left which probably only has fried Glue chip. Any suggestions? I remember reading old hard disks, specifically the ST-238R, can jam and need a light nudge with a hammer to get to work.

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Greenious » Fri Jul 01, 2016 11:53 pm

Nimrod wrote:I still have my old broken Atari left which probably only has fried Glue chip. Any suggestions?


The "new" machine you bought should be excellent donor material to your old one. Most chips are socketed on the first revisions. If it just the glue...

Second, if your drive isnt working right off the bat, let it warm up for 15 mins and try booting from it again. I have come across quite a few old drives that need to warm up after all these years. Ofcourse it is not advisable to keep using them if they need that, but it will atleast let you get the data out.

Oh, and hammer is not a good idea, if the drive don't spin up, try to "twist" the case. Sometimes old drives can be manually rotated from the outside, a few turns will get it loose. Worst case you need to ópen it and "jumpstart" the drive, although that is a last ditch effort and you really need to get all data out in one session, because odds are high that it wont work much longer after that.
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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Kubik » Sat Jul 02, 2016 4:23 am

I'd preserve the 'new' machine as it is. The machines with 'boot TOS' are pretty rare, while regular 520STs are doze a dime (at least here).

The need for warming it up is caused by the fact that the material is aging, and the clearances are changing - typically, the stepper mechanism is affected. When cold, it doesn't position the head exactly over the track, but letting the whole thing to warm up changes the position slightly due to thermal expansivity.

We were recommended to hard format the drives that were showing this problem. Of course, you can't do that as you'd lose the data, but if you intend to keep the drives, you can do it afterwards.

If you're gonna open the case, it's better done on a wet day to reduce the amount of dust flying in the air and getting into the drive.

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Nimrod » Sun Jul 03, 2016 10:34 am

Just to clarify. Here is the board before cleaning. Fairly standard except for the boot ROMs. Confirm Glue and many others socketed.

Not bad condition considering stored in a dusty garage since 1989. Disassembled and cleaned everything including washing the case with soap and water. Except for some very slight yellowing of the keys looks brand new!

It will be a few days before I can get started on the Megafile project. Need to unwrap the old machine from storage and think about how to recover my files. 720kb Disks will probably be OK as I have a USB floppy drive for my laptop.

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Nimrod » Sun Jul 03, 2016 2:50 pm

Got it! The attachment was lost due to me being a new user.... and the resolution/file size was too big.
Last edited by Nimrod on Sun Jul 03, 2016 4:02 pm, edited 1 time in total.

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Nimrod » Sun Jul 03, 2016 3:48 pm

OK. Here is the board.

... and it's alive! Haven't seen this prompt since 1985!
Surprisingly the TOS on disk still boots from the single sided drive!
You do not have the required permissions to view the files attached to this post.

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby 19rsn007 » Sun Jul 31, 2016 12:22 pm

Just got the ST225 working on my megafile :)
Needed to partition it using ICD (it actually had the ST225 listed) and after that installing the AHDI driver was a piece of cake

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Re: ST-238R ST-225 Megafile 20 30 MFM RLL

Postby Lando_C » Wed Feb 14, 2018 8:39 pm

That is good news, but beware! you hav ejust formatted the first two thirds of you r ST225 into RLL, because the megafile 30 board is hardcoded for rll. If you had success, that is great but then you can just as well reformat calling it an ST238 - and get 30 megs on it.
UK 1040 STF, SE kbd, SE tos 1.04, gotekHxC+floppy B internally, ATX psu on the side
DE Mega 1
SE Mega 2, no keyboard
SE Mega ST 4
Megafile 20 with 2 MFM drive mechanisms (80+20 meg) in hacked case, ATX psu on the side
Megafile 30
Megafile 60
SM124, SM125, finlux 19 inch TV RGBscart
PC Intel i5 8G ram many disks
5xRaspberry pi


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