Converting NRG to ISO in MAC

benzwu — Fri, 20 Nov 2009 13:09:34 +0000

AFAIK, single session disk image in NRG format is a 600 bytes header and standard iso data after that. To remove the first 600 bytes, we can use dd utility from terminal.

The command format as follow,

dd if=source.nrg of=target.iso bs=512 skip=600

Replace source.nrg with your NRG file and target.iso with your desired target iso file name.

Good luck.

Creating ISO in OS X Leopard

benzwu — Sun, 29 Mar 2009 00:13:36 +0000

I’ve been trying to find how to create iso image using my OS X Leopard and I’m in vague whether iso or OS X Leopard is not “standard” enough in the industry.

My search was in a dead end in desperate I hit on Wikipedia and found this,

ISO image files typically have a file extension of .ISO but Mac OS X ISO images often have the extension .CDR.

That’s quite enlightening. Why OS X use other file extention instead? So perplexing.

It’s quite easy to create the .CDR a.k.a .ISO using OS X Leopard built in Disk Utility. Here is the steps,

Slide in your disk to the drive.
Fire up your Disk Utility *type in your spotlight search for faster access, on top right most lup icon*, you should see the mounted disk on the left pane.
Hilight the disk on the left pane *some disk may have two level, the Session number and the disk name. Hilight the Session number*
Click the New Image on top windows icon
Change the image format to “DVD/CD master” and save.
When finished, rename .CDR to .ISO.
Double click to open and mount it to test whether it’s working

This way you can create bootable .ISO from bootable disk. Pretty useful when playing in virtualization. Enjoy.

benzwu » ISO

Converting NRG to ISO in MAC

Creating ISO in OS X Leopard