OK, went back to the Mac,
Power on,
Screen comes up, after a short time I get a floppy disk icon with a
question mark in it,
>I reckon this means the POST and ROM-hosted diagnostics are complete,
and I need to insert a system disk containing the disk-based Operating
System (OS) files/components
Insert a blank 400 k disk,
System reads drive,
Screen displays a floppy disk icon with an x in the middle and ejects
the disk.
> I reckon this means that the disk has been read, but the disk-based
OS components have not been detected/read into memory (makes sense, it
*is* a blank disk).
So.....
If all the above is correct, what I need is the disk-based OS
files/components on the blank disk.
Soooo.... as I've asked before, how do I mount the disk-based components
onto the disk?
Cheers,
Ian.
On 07-Feb-19 7:01 PM, 'Keith Jamison' via Vintage Macs wrote:
Hi Ian,
In order to boot, the Mac has to get past that sad Mac icon.
When you switch on and see a floppy disk icon with a question mark,
that is when you should be able to boot.
Can you provide any further information about the Mac please?
Specifically which model is it?
Thanks,
Keith.
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On Wednesday, February 6, 2019, 10:17 pm, Ian <ianbatty...@gmail.com>
wrote:
Hi, folks,
I got the Mac at a recycling shop with keyboard, mouse and nothing
else.
I have formatted a single-sided disk on one of my SE30s, but do
not know how to put the system files onto it.
I'm assuming that this is now a 400 kilobyte (400 k) disk
The reset switch at the lower rear left of the case has been
installed, and it works just fine, i.e., it is not jammed on.
If I can get the system files onto my 400 k disk I will be able to
report whether the system is able to boot.
Any ideas?
Cheers,
Ian.
On 07-Feb-19 9:09 AM, 'Keith Jamison' via Vintage Macs wrote:
Hi Ian,
You may also look for a programmer switch on your Mac. This is an
image of what it looks like for a 128, 512 or Plus:
http://facstaff.cbu.edu/~cyelving/PlusSwitch.jpg
And for an SE, SE FDHD and SE/30:
http://www.ccadams.org/se/switch.gif
Later models look like this,
https://upload.wikimedia.org/wikipedia/commons/1/1d/Macintosh_Classic_II_Left_Side_Reset_Interrupt_Switch.jpg
They are located to the rear of the computer, along the left hand
side of the casing, near the bottom. Check also that nothing
appears to be jammed into this area or broken and pushed in.
It could be that the interrupt or programmers switch has been
pressed in and this will keep the computer in a repetitive null
loop where it is unable to complete the start up process.
Can you tell us something about the history of this Mac, please?
Where you got it, what the seller said about it, did you see it
working when you bought it. If there is nothing evident on the
outside, then the next step would be to remove the rear case to
investigate further on the inside. You'll need a long (8 inch
minimum length for the shaft) T15 Torx screwdriver to remove the
screws. A 1/4" Torx bit in a holder won't get in far enough to
engage with the screws. There are very long Torx drivers that were
originally made for Macs but a regular T15 from Home Depot, B&Q
(U.K.) or a similar hardware store will be fine.
Depending on the Mac you have, you'll need to remove five (128,
512, Plus) or four screws (later models).
cheers,
Keith
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