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Mac Classic Question

My Mac Classic won't instalise 3.5" Floppies!! And they are mint MAC Formatted disks!!

Macintosh Classic-OTHER, Mac OS 8.6 or Earlier, Floppy

Posted on Jan 17, 2014 6:40 PM

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Posted on Jan 17, 2014 7:28 PM

Are the diskettes DD (800K) or HD (1.44 MB)?


A new (empty) Mac-formatted floppy should appear on the Desktop to begin with. Is that the case here, or do you get some kind of error message?


Do you mean 'initialise'? When one wishes to re-initialise an already Mac-formatted diskette, one would normally click on the floppy icon and then choose Erase Disk from the System menu. Is this what you tried? Or are you trying to 'install' something?


Is the Macintosh Classic otherwise working OK (starting up from the internal hard disk to the Desktop without errors)? Which system version is installed (see About This... under the Apple menu)?


Jan

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Question marked as Best reply

Jan 17, 2014 7:28 PM in response to NESBoy

Are the diskettes DD (800K) or HD (1.44 MB)?


A new (empty) Mac-formatted floppy should appear on the Desktop to begin with. Is that the case here, or do you get some kind of error message?


Do you mean 'initialise'? When one wishes to re-initialise an already Mac-formatted diskette, one would normally click on the floppy icon and then choose Erase Disk from the System menu. Is this what you tried? Or are you trying to 'install' something?


Is the Macintosh Classic otherwise working OK (starting up from the internal hard disk to the Desktop without errors)? Which system version is installed (see About This... under the Apple menu)?


Jan

Jan 17, 2014 10:27 PM in response to Jan Hedlund

Hi Jan,

They are HD. And I get an error message saying "This disk is unreadable: Do you want to instalize (format) it?"

Eve when you click "Instalize" it will say "This process will erase all information on this disk." So I click Erase and it goes through it's process, "Please name this disk." OK "Formatting..." "Verifying Format" "Re-Verifying Format"

"Instalization failed!" and it spits the disk out.

Jan 18, 2014 4:13 AM in response to NESBoy

Hi,


This happens from time to time. The pre-formatted disks can not be read properly from the beginning. Then the verification of the new formatting is not successful. One possible cause is that the diskettes in fact are bad.


If you have access to another older Mac with a floppy drive, you could check whether it is possible to reformat a floppy there, and after that try again with the Macintosh Classic.


You could even test reformatting one floppy in a PC, and then try again with the Classic. This test can also be done with a (pre-formatted) new PC floppy. The Classic should report that it is not a Macintosh disk and offer to initialise it.


Another possibility is that the read/write heads in the floppy drive need to be cleaned (a special cleaning disk can be used for this). Can other Mac floppies be read properly?


It can be wise to run the computer with Extensions off (hold down the Shift key while starting up) during tests.


The usual things like resetting the PRAM and rebuilding the Desktop should not change anything in a case like this.

http://support.apple.com/kb/ht1379

http://support.apple.com/kb/ht2344


BTW, I assume that this really is a Macintosh Classic (with a System 7 variant?), not just any other 'classic' Macintosh.

http://support.apple.com/kb/sp198


Jan

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