Thanks for posting those pictures. Now there IS documentation of an MMI mechanism available. I guess I should post pictures of my old disk drives for reference too. That big list c…
An individual who used to be a GCC HyperDrive dealer in the 80's contacted me recently and we've had a long discussion about our respective units. He inspired me to take shoot add…
I bought a nice 133x Kingston CF card for my WS. 133x is faster than most of the pre-G4 portables can do. It usually maxes the bus on my WS, plus was only $30 something for a 16GB.
Well, my solid-state drive is just a bog-standard $20 CF card, so I would not expect to see such blinding results at this end. Still, some of the test results on random reads in pa…
68kMLAHardwareby beachycoveTue, 17 Jan 2012 - 03:18
Keep in mind that they test sequential. The issue with hard drives over solid state is the latency as it moves from one physical area, having to reposition the head, then wait for…
And the MacBench results are in:
Internal CF drive is nearly twice as fast as CF in PCMCIA adapter (cardbus enabled);
Internal CF drive is overall marginally slower than conventi…
68kMLAHardwareby beachycoveMon, 16 Jan 2012 - 21:15
I returned for most of the day to the subject of this thread, and thought I might resurrect the thread itself, having had another go at replacing the hard drive in my 2400c with a …
68kMLAHardwareby beachycoveMon, 16 Jan 2012 - 04:44
By the way... will the Apple CD/DVD Driver from 8.1 support a non-Apple SCSI DVD-ROM drive? For instance, Toshiba M1401, which seems to be easily found and rather unexpensive.
Well that didn't work out either.
SCSI filter on the 7500's hard disk didn't change anything. Filter and terminator (and no internal drive) also didn't boot. I added an external h…
68kMLAHardwareby protocol7Tue, 16 Aug 2011 - 15:31
As to your problem, I'm still inclined to believe SCSI problem, but I would expect you to get to the flashing question mark with no cable plugged in. It's conceivable that it need…
68kMLAHardwareby protocol7Mon, 15 Aug 2011 - 20:34
As for the jumpers (partially documented here), J106 is open, J103 is closed. This seems to be the correct setup.
Click to expand...
That is a great find. Nice to know. I tri…
I read back over the start of this thread again. Just wanted to add some pieces of info.
I too have two different brands of RAM. 4x Texas Instruments and 4x Accutek. I've tried ea…
The screen takes a bit of time to kick in, so it's possible that the SuperMac logo appears before the grey screen with the other drives. By the time the screen is visible the logo …
The SuperMac image is resident in the firmware for the video card. That is, it lives on the EEPROM chip on the video card.
If you're not getting that screen with some configurati…
I took out the RAM and ROM and cleaned the contacts on them with q-tips and isopropyl alcohol. Still no improvement. The RAM slots are in two banks of four. If I leave two slots em…
I'm still a bit confused by this claim that active terminating drives don't need special termination on the IIfx. The dead IIfx hard disk is the only one that when connected up to …
Last test for tonight. I put my 7500 hard disk in the LC III, wiped it and installed a fresh System 7.5 for all Macs (I tried 7.1 but the resulting install wouldn't boot the LC III…
On the 7500 the hard disk was on the end of the cable with the cdrom as intermediate.
You're right. I assumed the term jumper would be at the back. I took off the drive sled and t…
Okay, they don't have any jumpers, but does that mean that they don't have any jumper pins? I've never seen a SCSI drive without jumper pins (or resistor packs) to set the termina…
Ran out of edit time on the last post.
Using the 7500's jumper-less hard disk and cdrom I get the grey screen with term power enabled or disabled on the cdrom.
Thanks for the ideas.
I'm pretty sure I tried with no scsi cable attached and got the grey screen. I'll try it again soon and see what happens (I have it sitting with batteries ou…
I just tried the hard disk from my Classic II but it still won't go past the grey screen (no rounded edges btw). So that's power ok and known-good HD not booting it. I've tried the…
A friend called over earlier with a multimeter and the PSU checks out. +12v, -12v and +5v in all the right places. The batteries checked out too.
I just tried the hard disk from m…
Unfortunately no. I'm not really equipped for this level of troubleshooting. I'm still at the swap-with-a-known-good-part stage.
I've stripped it down a bit now. Disconnected ever…