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Has anyone tried to contact Hosiden to see if they have any ideas? Maybe they could put us in touch with someone who worked there back in the 90s. Surely people who did this work for a living would enjoy waxing poetic and speculating on what could be going wrong.

More on this booting from USB — it turns out it would not reliably boot from USB. I only got it to be recognized once (when holding down option). But I found a very weird way to get it to use USB "reliably". I would select it as the "startup disk" in system preferences then go to extension...

FWIW — my 300mhz clamshell ibook wouldnt boot from USB. The ibook already had mac os on it and could read the usb just fine, I could see the system and all. I tried again with a different usb stick, and this time it worked. Same .iso file and everything, so apparently the actual media matters to...

Ok, so here's another update. I finally got around to swapping drives last night, just to realize that the quantum drive in my SE/30 and the quantum drive in my SE had both decided to start having stuck heads at the same time. So niether would boot. Still I figured I could at least throw in the...

Oh really? I thought that's what caused the yellowing in the first place? Don't I need to put some hydrogen peroxide solution on it first? You're blowing my mind right now...

Right. The floppy drive seems in great condition, except for initializing a new disk and now the 6.0.8 boot from floppy (see above video if you haven't yet). Yeah I have a copy of BOMARC pretty sure you can get them here: https://www.macintoshrepository.org/875-macintosh-se-30-schematics-and-repair

Yeah, grrr. Unfortunately, this is the 3rd OS I've tried with similar results. Shoot haha. I'll try swapping drives tonight or tomorrow just in case, but what made you start thinking broken trace?

Fair enough. It's worth a shot, it was in bad condition. Still, 2 questions: 1. If the heads were bad wouldn't I have read/write issues? I installed a full OS (5 floppies worth), and did some light writing with no issues. 2. If there were head issues wouldn't I just get a "bad disk" or some...

Is there anyway for a mere mortal to test/repair an out of tollerance head gap?

Right. Except like I said in the OP I just did a full clean and relube (which got it working again).

Good to know I can swap those drives out. I haven't had a chance to do it yet, but I just had another interesting floppy mishap with this machine I thought I would post in case it gives someone a clue. I tried to boot the machine off a 6.0.8 800k floppy, and it totally wigs out. The "Welcome to...

So a little update on this Mac. The day I got it in I was really bummed because the top corner of the case chipped in shipping. Grrr. I'm hoping to be able to glue it (any suggestions on that?). The original eBay post mentioned that the mac wouldn't boot up (disk ?), I assumed this was a bad HD...

I'm guessing this might be tracked back to the SWIM chip and some of the traces going there. But honestly, I'm shooting in the dark. I do have an SE Superdrive as well, are the floppy drives from those machines interchangeable with the one in the SE/30? If so I could swap them and check to see...

Recently got an SE/30 and restored it to good working order. It was rockin the simasi, so I recaped it, and that fixed that. The floppy drive wasn't working so I performed the full cleaning/lubing and that's back to tip top shape. Then I installed a fresh OS 7.1. All is good... Except when I...

I've been thinking through this myself. The amount of change in SSL cryptography since the latest version of any SE/30 compatible browser pretty much ensures you won't be able to do https browsing on *most* sites now, and certainly not in the future as SNI is being quickly adopted. However, that...

ooops. I did it again. Still pretty new at this, but $80 shipped seemed like a decent deal based on what I see these things sell for on eBay at least. Seems like it just needs an OS install and a little retrobright. Was I a total sucker? http://www.ebay.com/itm/252795466325

So basically they just randomly slapped various color leds on there haha. @techknight, do you remember what voltage led is used. Would be fun to swap.

The red is distracting. Totally looks like some kinda error. glad its not though.

I have an SE (my second compact - enjoying this new hobby) with an 800k drive and a 20mb HD. The machine boots up fine from the HD, but activity indicator light is red instead of green. Every compact I've used in the past has a green indicator light. My question is simple, is the indicator...

techknight and apm – I owe you both beers. She's working!!!!!!!! apm, I'm blown away by the specificity of your diagnosis. You NAILED it. I pinned out the entire UD8 chip, and sure enough, UD8/4 had no continuity with UK6/10. I didn't have any really fine gauge wire, but I patched it with what...