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 Topic: Creating OS7 installation floppy on OSX? (Page 1 of 1)
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  luisreg (Profile)
  1 MB
 
Posted: Thu Dec 20, 2012 12:50 am
Quote
  
I'm on OSX Lion with a working Floppy USB unit and brand new 3 1/2 disks, trying to install OS 7.0.1 on a Macintosh Classic with a nre drive (no installed OS currently).

I ran the following command on terminal: dd if=~/OS7/os-6-1.img of=/dev/disk1 bs=84 skip=1

It ends succesfully, but I encounter the following problems:

1) If I try to re-mount on Disk Utility, it returns an error message saying it cannot be mounted.
2) If I eject it after the terminal command, it says I have to initialize it, because it's not formatted (??)
3) If I start my Macintosh Classic with it, it ejects it and doesn't recognize it as an installation disk.

Any ideas?

Thanks!
Luis
  
  wove (Profile)
  Moderator
 
Posted: Thu Dec 20, 2012 8:54 am
Quote
  
OS X use of dd is slightly different from the dd implementation of GNU Linux.

diskutil list *gives you a list of your devices*

Once you have the number for your device you run

diskutil unmountDisk /dev/diskN *diskN is the floppy device from the above list*

sudo dd if=~/path/to/image of=/dev/rdiskN bs=84 skip=1 *rdiskN seems to work better in OS X*

Finish the operation with

diskutil eject /dev/diskN *this will ensure that all data is written and nothing is lingering in the cache*

bill
  
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