Impossible to create an image

Hi all,
i can't create disk image;
i'm using disk utility; the process reaches the 80% about and then it stops.
The error is: "Impossible to create image: input/output image"
I think the error is connected to this problem about superdrive, doesn't it?
http://discussions.apple.com/thread.jspa?threadID=718101&tstart=0
Thanks.
Bye!

I've encountered this error also on my MacBook, so, i think i mistake something.
Because if i want to create a .dmg image everything works fine, but if i want to create an image to write on a cd/dvd i encounter that error, both on iMac, both on MacBook.
PS: is it possible to create an image to write on a cd/dvd starting from a cd audio?
Thanks!
Marco.

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Disk Utility - Input/Output error when creating disk image

Hello!
A few days ago I was unable to turn on my Macbook Pro, and was stuck on the white screen. I've been searching around quite a lot on this forum, and before I try fixing anything, I REALLY need to back-up my files! I just bought a 2TB hard-drive, which I have partitioned to GUID and Mac OS Extended (Journaled), (it perfectly works on another Mac).
I now want to attempt to create an image of my harddrive (Macintosh HD) onto my external drive (which is empty). I've tried doing this both in 'read-only' and in 'compressed', but about halfway through, I receive a message saying "Unable to create 04/2014 backup.dmg (Input/Output) error".
I saw on another similar post that I might want to install DiskDrill or DataRescue. I'm fairly sure this is impossible for me to do, since my screen is completely white, and I'm unable to access my desktop.
I can only access Disk Utility through pressing command+R when starting my computer. Hence, I need to successfully back up my files through Disk Utility...
I'm aware that my HD may be corrupted since this is happening, but there must be a way for me to put an image on my external HD?? A few days ago, when I clicked on Repair Disk it said "Impossible to repair: invalid node structure". But now, it says that "Macintosh HD appears to be OK". I have no idea what's changed... And I can still not start my computer past the white screen...
I'm very bad with IT and computers, and have extensively tried to fix this on my own, but I'm now stuck here, with this "input/output error"...!
Any suggestions would be greatly appreciated! Thank you!
PS: I do not have Applecare, this is an old computer from 2009.

Thanks for your answer.
Yes, I thought that might be the case - but I'd taken my Mac and Logic disks to a Genius bar, and the 'Genius' had said he'd fixed the issue. I just wish he'd explained what he did and why he didn't replace the faulty disk(s)!
But is there any way around having the claim a disk, now I'm living abroad and my 'warrantee' has run out? It's going to be a pain in the fundament trying to claim a replacement set.

J'utilise Lightroom sur Mac. Aujourd'hui, impossible d'importer des images depuis une carte mémoire sur un disque dur externe.

J'ai changé de disque dur externe, le problème est le même.
J'ai importé des images sur disque dur interne, l'importation s'est faite sans problème.

Merci pour votre réponse. Ce que je ne comprends pas c’est que je peux ouvrir les fichiers directement du disque dur externe mais que Lightroom ne trouve plus rien.
Le 27 mars 2015 à 22:26, markalanthomas <[email protected]> a écrit :
J'utilise Lightroom sur Mac. Aujourd'hui, impossible d'importer des images depuis une carte mémoire sur un disque dur externe.
created by markalanthomas in Photoshop Lightroom - View the full discussion
Il semble un problème avec les autorisations du disque dur externe, ou peut-être le disque dur externe est en format incorrect (on devrait utiliser le format «Mac OS étendu (journalisé)».
Plus d’informations:
Disque dur externe sous Mac OS
Définir des autorisations
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Which is the best app to create cartoon images on that i can move around to other apps and animate to create cartoons

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Hi Susan,
Kindly check out Flash pro CC
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Thank you!

This helps, thanks. I have the content on the web page (where the hyperlinks will attach to), I have the image of the map, and I am making the shapes for the hotspots, just not how to get it all to link up.
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Class casting, creating an image and decompiling...

Hi, I've got a couple of questions:
1)
How can I fully decompile classes, so with the implementation of the methods? Is it always possible to fully decompile a class file? When is it and when not?
2)
I aks this questions before, but I still haven't got it working, so sorry, but I ask it again :) :
I want to create my own class, for example cMyClass which extends the java.awt.Image class, which has abstract methods. How do these methods(for example getGraphics etc) have to be implemented?
3)
I can't cast a Image to cMyClass... why not?
Someone told me he did the following:
Canvas c = new Canvas()
cMyClass oImage = (cMyClass) c.createImage (100, 100);
and that this worked... I tried to do this too, and it seemed to work, but it actually didn't!!
I found out that c.createImage returns a null reference!!! That's why Java was able to cast it to my own cMyClass (not a problem to cast a null to something else), but when I created a Image (by doing a lot of unnessacary difficult stuff), and then tried to cast this Image to cMyClass it throw a ClassCastException or something like that...
How can I cast the java.awt.Image class to my class anyway?
3)
Why can't you create a image like i've done above or even like below:
Canvas c = new Canvas()
Image oImage = c.createImage (100, 100);
Why does this return a null reference?
Isn't there a better way to create an image?
4)
The getWidth and getHeight need a I thought observer...? Why is this? I just want the width and height and don't have an observer or something like that. Is there a way around this?
I tried getWidth(null) but this returns -1
Please help! :)

Hi, I've got a couple of questions:
1)
How can I fully decompile classes, so with the
implementation of the methods? Is it always possible
to fully decompile a class file? When is it and when
not?You can always get a dump of the bytecode with 'javap -c'. If you don't want to figure things out yourself, try searching google for a class file decompiler, possibly a de-obfuscator.
De-compilation is completely possible if the original author wanted that, by including debugging information. Depending on the degree of such information and the amount of code obfuscation, the decompiled code may lack variable names, line numbers, field and method names, class names, and even code structure. Names and line numbers are usually not re-creatable automatically, since the information is simply lost, but you can replace them with your own strings when analyzing an unknown class file (using the correct tools). Re-creating the original code structure may work in some cases, but to me the general case looks rather close to the halt problem (i.e. not solvable).
Use a de-obfuscator, hope you've got good luck, and analyze the bytecode manually if that doesn't work.
2)
I aks this questions before, but I still haven't got
it working, so sorry, but I ask it again :) :
I want to create my own class, for example cMyClass
which extends the java.awt.Image class, which has
abstract methods. How do these methods(for example
getGraphics etc) have to be implemented?I don't really understand the problem. 'abstract' means on the language level that your subclass must provide an implementation, i.e. a method body. What that method is expected to do is explained in the javadocs for Image. But in fact you're free to do anything. You could play a sound in the getWidth() method (replace with any method name if you want). Just consider the fact that a lot of code calls getWidth in the hope of getting the width of the image, not playing a sound. So much about the language level.
On a higher level, a subclass of Image should implement a certain way to describe an image. AFAIK this means that your code must know the size of the image and know how to produce the pixels of the image. I can't tell you in general how you must do this, because it depends on your special case. This boils down to the question, why do you want to write a subclass of 'Image'? What new way of describing and image have you come up with?
3)
I can't cast a Image to cMyClass... why not?Simple, and that's certainly not an ALT. Because that specific Image is not a cMyClass. It's probably a BufferedImage or similar that was produced by AWT.
Please read the specs carefully what casting is about.
Someone told me he did the following:
Canvas c = new Canvas()
cMyClass oImage = (cMyClass) c.createImage (100,
100);
and that this worked... I tried to do this too, and it
seemed to work, but it actually didn't!!
I found out that c.createImage returns a null
reference!!! That's why Java was able to cast it to my
own cMyClass (not a problem to cast a null to
something else), but when I created a Image (by doing
a lot of unnessacary difficult stuff), and then tried
to cast this Image to cMyClass it throw a
ClassCastException or something like that...
How can I cast the java.awt.Image class to my class
anyway?You can't, and if you understood casting then you'd understand that it wouldn't make sense.
3, 4(don't know)
Maybe stupid question, but for example the BufferedImage, is this
completly written in Java?
How is the link made between the OS+hardware and the Java code? I
mean, displaying images etc. is very platform dependend not?Look for JNI (Java Native Interface). It's a way to link native (e.g. C) code with Java code.

Unable to create Disc Image from DVD

I get the following error when trying to make a copy of a family wedding DVD. I'm using Disc Utility and creating the image as a DVD/CD master (.cdr) file. It gets to about 3/4 of the way and then gives the following error.
The internal drive is a PIONEER DVD-RW DVR-K05
Sep 10 22:13:24: Disk Utility started.
Creating Image “Wedding of xxx & xxx.cdr”
Reading VOLUME_IDENTIFIER (Apple_UDF : 0)...
Unable to create “Wedding of Sarah & Federico.cdr” - Input/output error.
I've tried twice now and the same error. Looks like I might have to use Toast/Popcorn etc?
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iMac G5 2.1GHz 1Gb RAM 260Gb HDD Mac OS X (10.4.7)

I do not know what that error means. However, if you open up the Disk Utility & go into it's Help Menu & in the search field type duplicating a CD or DVD. There you will find detailed instructions on how to create a disc image from a DVD.
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I've watched many tutorials on how to create an image gallery (auto scrolling ones, scrolling ones that require mouse hover, etc etc), but those aren't what I am looking for.
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http://jalbum.net/res/help/integrating-tutorial.html
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Any ideas? Thank you.

Watching tutorials and learning from them are two different things. If you have learned from them you should be able to use what you have learned to devise a gallery such as the one you link to. If you have learned from them and cannot use what you learned, then you probably need to find/learn more.
If you study the design you linked you should be able to reason out what elements you need to devise... it is not overly complicated.
For the large picture you could have a Loader into which you load whatever image is selected from the thumnails. To get a brief transition you could just set the alpha of the Loader to 0 when an image change is occuring and gradually fade it in after the image has loaded.
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Problem in creating 1 image using differnt images

Dear Fellows I want to create an image by using different images in byte array format. Images may be transparent or normal images. I want final result in byte array. I am using the following technique which is working fine but the problem with this technique is that it takes too much time to create an image. This is because I am using MediaTraker. If I delete the code of MediaTracker then program have undeterministic behavior i.e, sometimes it create the final image properly and sometimes nothing is displayed in final image.
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Early replies will be appreciated
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byte[] image1 = // read 200 X 200 image from disk and convert it in to byte array
byte[] transparentImage // read 300 X 300 transparent image from disk and convert it in to byte array
Image img=null;
Frame frame =new Frame();
frame.addNotify();
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mt.waitForID(0);
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//draw background starting from x=0, y=0 with 800 X 600 dimentions
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img=Toolkit.getDefaultToolkit().createImage(image1);
try
MediaTracker mt = new MediaTracker(frame);
mt.addImage(img, 0); // adds image with ID 0
mt.waitForID(0);
}catch(Exception myex)
myex.printStackTrace();
//draw image1 starting from x=10, y=10 with 200 X 200 dimentions
g.drawImage(img,10,10,200,200,null);
//////////// end draw image1
//////begin transparentImage
img=Toolkit.getDefaultToolkit().createImage(backData);
try
MediaTracker mt = new MediaTracker(frame);
mt.addImage(img, 0); // adds image with ID 0
mt.waitForID(0);
}catch(Exception myex)
myex.printStackTrace();
//draw transparentImage starting from x=400, y=0 with 300 X 300 dimentions
g.drawImage(img,400,0,300,300,null);
///end draw transparent image
byte []finalResult = //convert requiredImage into byte array;
you can mail me the solution on my email address [email protected]
thanks with best regards
and waiting for someone to reply
kamran zameer

is there anyone on this forum to help me??????
regards,
kamran zameer

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Hi,
I've spent a couple of hours trying to make a copy of one of my macminis, trying to copy it in another macmini to have the SAME machine "duplicated".
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First of all, I went to my "master" macmini, DiskUtility, create new image from folder, select my macintosh HD and I created the image of the whole HD.
Almost a hour after, the image was created.
Then I moved the .dmg to a USB drive, and I connected the USB pen to the machine that I want to be a "clone" of the master. There, I opened Disk Utility, Restore, I selected the Source image from my USB, but I can't selected (=drag) the Macintosh HD into the "destination" field...
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Is there any way to create this image in photoshop?

Is there any way to create this image in photoshop? ,Any help would be appreciated?

What JJMack said. An example I pulled in less than 5 minutes:
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What's the best way to create disk images?

of 300GB hard drives or partitions?
Disk utility is failing for me with an input/output error.
A typical example:
I have a new HFS+ 500GB external FW 800 drive that I am using a destination.
I will boot from my original 'install' DVD and then open up disk utility to start the disk image creation.
Note: my source is my "Macintosh HD" partition that is around 300GB.
Everything looks like it is running well, then a couple hours into it, it fails... something like:
"cannot create img.. blah input/output error".
Note: Verify Disk shows no errors on the source.
One guess is that the img creation process is failing after I leave the computer and perhaps my computer falls asleep. I tried setting the 'Energy Saver' prefs in the systems prefs, but of course, since I'm running off the install DVD, I wasn't able to get into the prefs.
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Eric, Carbon Copy Cloner is what I was leaning towards. The owner says his guess is that there are bad blocks on my HD, and since Disk Utility is block based, that it is failing where CCC is file based, and will just skip files that are corrupted or that it can't copy.
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I had simililar problems with much headscratching as the result.
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