DMG to ISO with Disk Utility

Finally, to end with this posts about Disk Utility, I will show you how to convert a DMG image to an ISO image:

1. Open Disk Utility.
2. Drag and drop your DMG image into the left side of the application, select it and click on Convert Image.
3. Make sure that the image format is CD/DVD Master, and the encryption is None (or something similar).
4. Select the folder and the name of the file, change the extension to .cdr, and click Save.
5. The last step is changing the extension of the result file to .iso.

 
And that’s all! As easy and fast as on previous posts! I hope this helps you if you have a similar problem.

CD/DVD to ISO with Disk Utility

Sometimes a DMG image is not useful for all applications. For example, if we want to use a CD/DVD image with the virtualization app VirtualBox, the image must be in ISO format. But once more, Disk Utility can make this task easily:

1. Insert the CD/DVD into your Mac and open Disk Utility.
2. When you see the CD/DVD in the left side of the application, select it and click on New Image.
3. Make sure that the image format is CD/DVD Master, and the encryption is None (or something similar).
4. Select the folder and the name of the file, change the extension to .cdr, and click Save.
5. The last step is changing the extension of the result file to .iso.

 
And that’s all! As in the past post, it’s easy, fast, and without any external tool.

CD/DVD to DMG with Disk Utility

Disk Utility is a great application for working with hard disks, but also with CDs, DVDs and disk images. If we want to create an image of a CD or a DVD in DMG format (Apple format), we can make it easily with this tool. These are the steps I followed to archieve it:

1. Insert the CD/DVD into your Mac and open Disk Utility.
2. When you see the CD/DVD in the left side of the application, select it and click on New Image.
3. Make sure that the image format is Compressed, and the encryption is None (or something similar).
4. Select the folder and the name of the file and click Save.

 
And that’s all! Easy, fast, and without any external tool.

EFI32 MacBook users: forget 64-bit kernel

As many people, I have a white MacBook with a Core 2 Duo (64-bit) processor, but with EFI32. I installed Snow Leopard thinking that the whole system will be in 64-bit mode from the beginning (as Apple says on its web). But opening the Activity Monitor I realized that the kernel was still in 32-bit mode (kernel_task process, in All processes). I searched on the Internet and I found out that if your MacBook has EFI32 your kernel won’t boot on 64-bit mode. Doesn’t matter the processor you have, Apple does not allow it.

For EFI64 Macbooks, the kernel won’t boot in 64-bit from the begining too. But it is possible to boot the kernel in 64-bit mode doing some tricks. Be careful because I have read that this tricks can make some drivers not compatible with the system.

I tried to do those tricks with my EFI32 MacBook and nothing seemed to happen. I know the system booted in 64-bit mode, but the kernel_task process was still in 32-bit, so I decided to leave it and forget it. But some days later I realized that the general performance of Snow Leopard was worse. After some searches on the Internet without finding any answer, I remembered the changes I made. When I reverted those changes, starting the system in 32-bit mode, everything was fixed.

So I recommend EFI32 MacBook users to forget the 64-bit kernel, at least until Apple makes an update activating it.

Related posts: Find out which EFI your Mac has

Tricks for EFI64: ZDNet

Find out which EFI your Mac has

To find out which EFI you have installed in your Mac, just open the Terminal application, type the following line, and press the Enter key:

ioreg -l -p IODeviceTree | grep firmware-abi

I had no problems executing this line. I my case, I have EFI32.

Found in: Apple Support

WordPress code style

In the last post I inserted a system path. I don’t know if it’s a standard, but I like to put this kind of things with code style. I looked for it in the WordPress editor without success, so I tried to add some tags in the HTML editor, and accidentally I found the solution. To put some text in code style, tag that text int the HTML editor this way:

<code> text to format </code>

It’s not a big problem but I wanted to share it with you.

Slow Snow Leopard

First time I ran Snow Leopard, I noted it was a little slower than Leopard, specially when using Exposé. Due to I spent my money supposing to get a faster and better operating system, I started looking on the internet for an answer to this. The solution was easier to find than I thought because it was on Apple Support discussions. The only thing I had to do is to delete the following file:

/System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist

It works for me. Now the system runs faster and smoother.

Found in: Apple Support

Welcome to Problem Resolved

Hello everyone and welcome to Problem Resolved! My name is Javi and I am a Computer Engineer from Alicante, Spain.

During my career I had many issues computer-related problems, some of which I resolved with some difficulty. I think it’s time to share with you all the solutions to these problems so they don’t happen again.

I’m currently a Macbook user, so the majority of my posts will treat about Mac problems. But I’m a recent switcher, at my job I work with Linux and almost all people around me are Windows users, so Mac won’t be the only topic.

I hope this will be helpful for all of us!