Home | SearchFAQ You are not logged in: Register | Log In
Please Read:
An important message from System 7 Today founder Dan Palka
 Topic: Creating OS7 installation floppy on OSX? (Page 1 of 1)
Post Reply
  luisreg (Profile)
  1 MB
Posted: Thu Dec 20, 2012 12:50 am
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?

  wove (Profile)
Posted: Thu Dec 20, 2012 8:54 am
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*

Topic Tools
Post Reply

Start New Topic in this folder.

© 2010 System7Today.com.
The Apple Logo, Macintosh™, Mac OS™, and others property of Apple Computer, Inc.
This site is in no way affiliated with Apple Computer, Inc.