Thread
512k Hyperdrive SSD hack... suggestions? Need to run power.
Hmm. Installed System 2.1 just incase, but that exhibits the same problem. Shucks.
You might want to make sure the SSD board is good by running it in another machine.
Otherwise, the ACK/IRQ lines back to the processor from the SCSI controller can cause this.
Otherwise, the ACK/IRQ lines back to the processor from the SCSI controller can cause this.
A 512K with Mac Plus ROMs makes it a 512Ke. Memory permitting, you can have it run from system 3.2/Finder 4.0 to 7.1. System 7.1 will not run on a 512Ke unless you expanded the RAM with an extra RAM Card like the Dove Board. I used to have System 7 on a 512Ke with a 2MB Dove Board, giving the Mac 2.5MB!
Otherwise, you can run up to System 6.08 on a Mac 512K provided the system is trimmed down to fit into RAM.
Somewhere I have a System 1.0 disk, and it won't run on a 512Ke or Plus, it always crashes on Boot- Happy Mac and then Sad Mac. It will run on a 512K and 128K with the older ROMs.
Somewhere I remember, anything before System 3.2/Finder 4.0, you need the disk (floppy or hard drive) to be formatted in MFS and not HFS, or else it will also crash on Boot.
I think it's a hardware issue. The light on the SCSI2SD stays a solid red while it's stuck at the Welcome to Macintosh.
I'm going to try a different SCSI cable, maybe I messed it up when I crimped the new header on (I hope.) That'd be a lot easier to repair.
I'm going to try a different SCSI cable, maybe I messed it up when I crimped the new header on (I hope.) That'd be a lot easier to repair.
I swapped the SCSI cable and it booted right up.
However, when I restarted it, it crashed at the Welcome to Macintosh screen.
I can get it to boot at random times. Not entirely sure what's going on when it does successfully boot.
(It is is crazy fast when it does, though. Maybe 8 seconds to boot the 512k to System 2.1. Pretty insane.)
However, when I restarted it, it crashed at the Welcome to Macintosh screen.
I can get it to boot at random times. Not entirely sure what's going on when it does successfully boot.
(It is is crazy fast when it does, though. Maybe 8 seconds to boot the 512k to System 2.1. Pretty insane.)
thats starting to sound more and more like the SCSI2SD itself. maybe a firmware bug on early SCSI implementations, or SD card issues.
Well, then I guess the SCSI cable was part of the problem, and there's still some troubleshooting to do.
Either that, or maybe it's just System 2.1. The Plus needs System 3.0 or later, so maybe a 512k with Plus ROMs has the same requirement?
Techknight might also be on to something. It'd probably be good to examine the SCSI2SD closely for errors. Perhaps check for new firmware updates also?
c
Either that, or maybe it's just System 2.1. The Plus needs System 3.0 or later, so maybe a 512k with Plus ROMs has the same requirement?
Techknight might also be on to something. It'd probably be good to examine the SCSI2SD closely for errors. Perhaps check for new firmware updates also?
c
I don't know if the cable was part of the problem, or just coincidence. I'll need to test that further.
In any event, I can attempt to rule out the SCSI2SD if I attach a real hard drive. I'll give that a try this weekend.
Also, I have no way of updating the SCSI2SD, nor do I know how.
In any event, I can attempt to rule out the SCSI2SD if I attach a real hard drive. I'll give that a try this weekend.
Also, I have no way of updating the SCSI2SD, nor do I know how.
What kind of SD are you using?
If you can - get a SD to USB adapter (or a multi-car adapter with SD on it) and on a G3/G4 running on OS9 partition it and format it on HFS. Then transfer the system on it.
If you can - get a SD to USB adapter (or a multi-car adapter with SD on it) and on a G3/G4 running on OS9 partition it and format it on HFS. Then transfer the system on it.
When you use an SD card, or any flash memory for that matter, you need to align the partition on the 1024 boundary. Most formatting software pre-SSD doesnt do this, and you will suffer serious performance issues, and possible corruption/errors if you dont!
So mounting it on a modern mac using some disk utilities may let you do this.
So mounting it on a modern mac using some disk utilities may let you do this.
Well, I'm happy to report that both the SCSI upgrade that I repaired and my home made cable work perfectly fine with a regular older Apple ROM HDD.
So it looks like it's the SCSI2SD that's causing the problem.
It's still pretty darn fast even with an old HDD. Booted just as fast as the SCSI2SD with System 2.1 as far as I could tell.
So it looks like it's the SCSI2SD that's causing the problem.
Do what now? I have FWB Hard Disk Toolkit 2.1, Lido, and Anubis Utilities. If any of those can do that, then I'm all set. If not, then I can't.
It's still pretty darn fast even with an old HDD. Booted just as fast as the SCSI2SD with System 2.1 as far as I could tell.
Could you format the SD card on a modern Mac using Apple Partition Map with the HFS+ filesystem, and then simply take it to an older Mac and reformat the existing partition as HFS standard via Finder's "Format..." command? That shouldn't mess up the alignment of the partitions, should it?
I'm tempted to try this myself (though I first need to get around to setting up a SCSI2SD for an SE/30 I've been working on. Slowly.)
c
I'm tempted to try this myself (though I first need to get around to setting up a SCSI2SD for an SE/30 I've been working on. Slowly.)
c
Upgraded to the latest firmware, and I get a whole different type of errors. Now, it'll boot after a fresh format & install on the first try only. The second try results in a Sad Mac, and the third try onward are question mark floppies.
It's really weird.
It's really weird.
Hmm, maybe it's a manifestation of the problem techknight was describing?
Try partitioning and formatting the SD card on a modern Mac in HFS Extended, and then go over to an older Mac and reformat (but not repartition) it in HFS Standard using Finder's format command.
I don't have the slightest clue if it would work (and probably won't because it needs drivers), but it's worth a try?
Also try to align the partition on the 1024 boundary manually. That might work.
Another thing is that the Plus (and presumably any SCSI upgraded 512k as well) needed an interleave of like 2:1 or 3:1, or something like that.
This is weird!
c
Try partitioning and formatting the SD card on a modern Mac in HFS Extended, and then go over to an older Mac and reformat (but not repartition) it in HFS Standard using Finder's format command.
I don't have the slightest clue if it would work (and probably won't because it needs drivers), but it's worth a try?
Also try to align the partition on the 1024 boundary manually. That might work.
Another thing is that the Plus (and presumably any SCSI upgraded 512k as well) needed an interleave of like 2:1 or 3:1, or something like that.
This is weird!
c
Michael McMasters got back to me. He doesn't know anyone who's used it with a 512k or a Plus. Unfortunately it was my last one and I already stuck it into and SE/30 that's going to be shipped out.
In any event, when I get another one, he said I can hook it up via USB and while it's connected to the 512k simultaneously, then run a utility to capture the data in real time and save it to a log.
I'll send him the log and he's going to analyze it, see what's going on.
In any event, when I get another one, he said I can hook it up via USB and while it's connected to the 512k simultaneously, then run a utility to capture the data in real time and save it to a log.
I'll send him the log and he's going to analyze it, see what's going on.