How are you trying to boot from the .iso, You'll need to burn it to a disk. I have copied an install disk before but using the built in disk utility and it worked fine.My iMac likes to toss CD's when ejecting them so I'd like to make a backup copy of my system software. I've tried DiscBlaze 6.1.6 which appears to be able to make an proper ISO of the CD, but I cannot boot from it. Any tips?
Yeah, guess I skipped that part. I burned the ISO back to a CD-R using DiscBlaze as well. Booting from the original CD works fine, but not the image.How are you trying to boot from the .iso, You'll need to burn it to a disk. I have copied an install disk before but using the built in disk utility and it worked fine.
Thanks that was really helpful. A Mod should make a sticky out of this.The only thing that will work is Disk Utility, if you want to make an image. Lock the image immediately (right click on dmg image >Get Info >tick "locked"). If you mount it before you lock it, it will no longer be bootable after you burn it to disk.
Nothing else will make a bootable disk image; not DiscBlaze nor Toast. Use these only if you want to copy directly from disk to disk.