.dmg problem input/output error

hi,
i have a copy of adobe cs3 from my college, and i am having problems installing. i skipped the verification. and then i noticed it would only install about 3 components, not illus. photoshop, or flash, then i let the verify run, and then it came up with an error of "input/output error" how is it possible to save the files on the dvd, what are my options?
also, another sidenote, i have had a weird problem with i tunes, since 7.6.2 and my software is all up to date. if i run i tunes, it could be 10 secs or after about 10 mins. the pinwheel comes up and wont go away, how can i check in system monitor if theres somehting fishy, has anyone heard of this problem ? i was thinking to downgrade since i have not had problems until i upgraded

HI Gene,
"This usually works fine but now and then I get an error that says " Unable to create disk1s10.dmg Input/output error." Have you downloaded and installed any 3rd party software or changed any preference files since you've successfully done this before ??
If your profile is correct, you might try updating from 10.4.8 to 10.4.11. If you do, make sure and Repair Disk Permissions when it's finished.
Suggestion here for using Console: http://forums.macosxhints.com/showthread.php?t=67302
Carolyn
Message was edited by: Carolyn Samit

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Try to mount a dmg file -- Input/Output error

I have certainly searched thru postings, but I cannot quite find a solution.
[1] An external FireWire drive holds a lot of dmg files of application installers.
[2] Double-clicking some, not all, of them results in an Input/Output error.
[3] Toast is always able to mount them.
[4] When the error happens, an attempt to copy the dmg file onto the Desktop results in another error message "The Finder cannot complete the operation because some data in "<name>.dmg" could not be read or written. (Error code -365)". At this point, clicking on OK brings up a Copy window which hangs. The only way out is to Force-Quit the FInder.
What should I do to rectify these issues?

I appreciate your suggestions.
The external drive in question is OWC's Mercury Elite-AL Pro with FireWire 800 (2) and 400 (1) ports
It was purchased in February, 2008. Its original connection was thru FireWire 800 to my G5 Tower.
[1] Ports
      The G5 has only one FireWire 800 port, while the OWC enclosure has two.
      So, I used the other FireWire 800 port on the OWC.
      The same intermittent I/O error in mounting dmg files.
[2] Cables
      I tried another FireWire 800 cable with either of the two FireWire 800 ports on the OWC.
      The same intermittent I/O error in mounting dmg files.
      So, I switched the connection to FireWire 400 between my G5 and the OWC.
      No I/O errors after trying to mount numerous dmg files.
[3] MacBook Pro
      I disconnected the OWC and connected it to a MacBook Pro's FireWire 800 port.
      No I/O errors after trying to mount numerous dmg files.
From [1], [2], and [3] above, can I deduce that something is wrong with the FireWire 800 port on my G5 Tower? I thought that both FireWire 800 and 400 ports on the G5 Tower were controlled by the same chip.
Please advise.

Restoring .dmg image from external to Mac HD in Disk Utility: "Unable to scan image (Input/output error)"

Hi guys,
So I've got a problem with restoring the image backup I did (using Disk Utility) of my 500GB HD on my MBP which was acting weird or maybe even crashed a few months ago. After creating the backup image and putting it on my external device, I installed Mavericks back to see if everything was alright (mainly the HD) and everything seems okay.
I did try restoring the backup image through disk utility before installing mavericks (thus erasing everything again on the HD) AND after. But nothing..
The whole process starts fine and then it starts scanning the image when after maybe a good 10-15min in I get a message that says that it was unable to scan the image. I tried verifying the disk(s), everything came out "OK". Also tried scanning it through Images > Scan image for Restore... with the same results.
While searching I've seen people getting messages like "Unable to scan filename.dmg (Invalid argument)" and "Unable to scan filename.dmg
(Internal error)" but none have (Input/output error)
The screen grab is below.
I also came across something about using terminal/commands but I'm not that savvy with it, especially considering that those there had issues with either mounting or trouble finding the image.
I've also tried moving the backup image to a different external device 2TB and also the desktop because I read it may have to do with the format of the externals or maybe free space. But THEN I would get a message saying
"The Finder can't complete the operation because some data in "Mac HD Backup.dmg" can't be read or written. Error code -36"
Fyi ALL my externals are HFS+/Journaled and the backup image format was compressed.
I REALLY don't know what to do next. Was it the wrong move to create a dmg image? Have I lost everything? Is there still a way out?
If anyone can help, THANKS!
2012 MacBook Pro, Mac OS X (10.9.3)

Make a "Genius" appointment at an Apple Store, or go to another authorized service provider. You may have to leave the machine there for several days.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional—ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
Apple also recommends that you deauthorize a device in the iTunes Store before having it serviced.
*An SSD doesn't need to be zeroed.

I'm trying to backup a my harddrive with disk utility but I'm getting an error Unable to create Backup.dmg" (input/output error). Is there any other way to save my data? I believe my hard drive is failing or corrupt file. I can't boot up. Grey screen

I'm trying to backup a my hard drive with disk utility but I'm getting an error Unable to create Backup.dmg" (input/output error). Is there any other way to save my data? I believe my hard drive is failing or corrupt file. I can't boot up. Grey screen and spinning wheel. I've tried everything https://discussions.apple.com/message/20580424#20580424
any help will be greatly appreciated.

Check here. Also have you done a TimeMachine back up?
http://support.apple.com/kb/TS2570

I had a problem with the hard disk on a 2010 macbook pro. Replaced the hard disk with an Hitachi 1TB and when I tried to erase and format It fails with input/output error. Any help much appreciated!

I had a problem with the hard disk on a 13" 2010 macbook pro. Replaced the hard disk with an Hitachi 1TB disk but when I tried to erase and format, it fails with input/output error and at other times saying unable to allocate memory. Any help much appreciated!

Zap the PRAM and Reset the SMC, then try again.

Problem Removing Files: Input/Output Error

I recently posted this article
http://discussions.apple.com/thread.jspa?messageID=4596969#4596969
about my struggles to repair my hard drive. I'm currently in Single-User Mode, in the process of manually removing files that returned the error "Overlapped Extent Allocation" during fsck. Everything's going well for the most part, but a few of the files I'm finding can't be removed. When I try, I receive this message:
hfs: WARNING - blocks on volume Garfunkel not allocated!
rm: [path name]: Input/output error
It all sounds very dire and life-threatening, but I have no idea what this means. I can only assume it means there is a permissions issue. Am I close? Is there a way I can remove these files? So far all of the files have been iCalendar files or iApps preference files. If it's important, I can list the exact files. I hope someone can help me, because I know very little about Unix.
Thanks to everyone who makes an attempt at rescuing me!

Thanks. I did that, as per the Apple Support article instructions, but apparently I have to do it before every remove command. And sometimes, I have to input the command twice for it to work. Thanks for the tip.

Input/output error when copying a DVD

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I just figured out how to get around the problem. Download Burn and use it to burn the VIDEO_TS file to a new disk. It must be something that Apple adds to make it hard to copy DVDs made from non-Apple software.

Input/Output error plus CS5.1 download error (mac)

Hi. Sorry for the long story.
Yesterday, my Photoshop CS5.5 crashed and I was unable to open the program. I tried all my Adobe products and it was the same. I attempted to uninstall (for some reason Illustrator refuses to uninstall) and had hoped I could reinstall my Creative Suite 4 I purchased back in 2010. I also have a Photoshop CS5.5 disc- all with the serial numbers that came with them, too.
Here comes the problem on my end: my old computer cannot read discs anymore. I tried for several hours to get my MacBook to read the discs- nothing. So, I turned to the forums and found a download link for all of the previous versions of Photoshop. I found Photoshop CS5.5, I hit download. Everything goes smoothly until I look at what I've downloaded- it's CS5.1, not CS5.5
Adobe has mistakenly placed CS5.1 in the CS5.5 Photoshop download and no matter who I talk to through the web tech support they can't seem to understand what I'm trying to say. My serial number works but it's only for CS5.5, obviously. And yes, they've checked, it should still be valid for CS5.5, if I can ever get the download to work for me!
So concludes my first problem.
My second problem is with a message I keep getting when attempting to install any other version of Photoshop- the "input/output error" message. I figured, well, since I can't get CS5.5, I'll try my Creative Suite CS4. But after I download the .dmg and attempt to open the file and start the installation, I get this
I tried Creative Suite 4: Design Standard, Photoshop CS4, and Photoshop CS5- all gave me the same message. Is this an issue with my computer or an issue with the download?
For reference I have a MacBook Pro OS X 10.6.8 and I'm trying to install either Photoshop CS5.5 or Adobe Creative Suite 4: Design Standard and I have serial numbers for both

Use another browser for the download, though both your issues potentially point to your harddrive being on the verge of breaking down completely and/or your system requiring an operating system reinstall...
Mylenium

Disk Utility Input/Output Error

I am trying to make digital backups of some home movie DVDs I have created in the last few years with iMovie and iDVD. Every time I use the iMac to try and make a disk image with Disk Utility, it gets about halfway through the process and then I get an error message that says, "Unable to create "disk3.dmg" - Input/output error." I usually have better luck on my older Powerbook G4, though I sometimes get the same message there. Does anyone have any ideas why this is happening...and how I can fix it? Of note, I have tried different names for the disk image, but it doesn't seem to have any effect.

You're going to love this...
I had been getting the exact same error, even after I've done full image backups of my main volume just a few months before. Since I couldn't perform the image backup, I tried copying important files manually. When copying some 3000 files from my Documents folder, the *entire copy* failed...one file was corrupted and was unreadable. So instead of just asking if you want to skip and continue, the entire operation fails. I deleted the corrupted file, and booted from an alternate system, and voila! I successfully created an image of my main volume and saved it to an external HD in about 15 mins. No problems whatsoever. Unbelievable.
Make sure your DVDs are clean, ie, such that all the files can be read correctly.
What bugs me most, is that the bad file was not detected when I ran the Disk Repair utility on the main volume (from another booted drive of course).
What am I missing such that I can detect issues like this in the future?

External Hard Drive Input/Output error

I recently started having problems with an external hard drive setup that I did not have problems with prior to upgrading to 10.5.5 and trying to setup the drive to be compatible with Time Machine.
The hard drive enclosure that I have has 2 bays for two SATA drives. I have used this enclosure without any problems until I tried to get 1 drive to act as the backup drive for Time Machine and the other to be storage. I formatted them using Drive Genius. I used the option for GUILD or GUIL which it said was the better format for using with Time Machine.
The first problem I ran into since upgrading and reformatting the drives is I got an "input/output" error the first couple times I connected the drive via USB to my Mac. I could still use the drives but I got weird errors every once in a while like "input/output error" or "device was not ejected properly" even though the device had not been unplugged.
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I have seen some posts when I do a search in google about this issue and it seems this is a known issue. Every suggestion I see says to insert your Tiger DVD and reformat the drive using that and the problem will be solved. The only problem with that is I have a lot of important files on the drive that I cannot lose. I had the files backed up until I moved them to the new drive a while back. Now I do not have a backup because I was in the process of switching to bigger drives and erased the old drives after doing so because everything was working fine.
I am hoping someone out there may have some suggestions (other than erasing the drive) to get my dives to mount so I can transfer the data off to another drive and reformat after.
Thanks,
Paul Rugg

Thanks for the suggestion.
Do you think that would work better than Drive Genius? I bought Drive Genius 2 and it does not even see the drives when they are plugged in unlike Disc Utility which can see the drives but cannot mount either one.
Maybe this following post I made to a different questions may help. The data on the drive is other buying another program for if it will work. I think my next step may be to go over to a friends place and try to mount the drives on his computer and transfer stuff off if they connect.
text below posted to other question relating to external hard drive problem.
I have recently had the same mounting issue with my new external hard drive. I just purchased a new 750Gb Western Digital Sata drive and got everything transfered over to it. Immediately, I got an error saying that the drive had been ejected incorrectly even though it was still plugged in. I was a little curious. I restarted the computer (hard drive still plugged in via USB 2.0) and the drive showed up just fine. I plugged another 250Gb drive into the same case (2 bays) and the 250GB drive showed up just fine.
Well, I then noticed there was an OS upgrade available when I ran Software update so i ran it and when I rebooted the drives were gone. I can see the drives in Disc Utility, but they will not mount. Drive Genius cannot see either disc. Disc Utility says I need to repair the drives, but when I do it says they are fixed but they don not mount.
The problem really seems to be related to mounting USB external drives. I got ahold of 2 seperate external firewire hard drives and one shows up just fine while the other has the same problem (both work on other systems. I would try wiping the drives and reformatting but ALL MY stuff is on them and not everything has been backed up. Yuck! I have not tried connecting my hard drive to another Mac yet.
The drives being used are #1 Maxtor Maxline Plus II 250GB SATA/150 HDD 1.5b/s 7Y250m00654ra
and #2 Western Digital WD7500AACS WD Caviar GP Green Power drive.
I have another post similar to this and I have not received any feedback, but I have been doing my own searching and have found similar posts on the net.
Anybody have any clue what might be going on here? It really seems to be related to my upgrade.

Disc image input/output error

When burning a disc image using disc utility, I get the ever so popular input/output error message. I cannot find anywhere on these posts a solution to this problem. It is not dirty discs, etc. It happens when I try to copy dvd's... which are not licensed, etc.

Could be so many things, Input/Output errors are generally loosing contact with a device for a variety of reasons, do you get any error # with that?
Open Console in Utilities & watch for more info whn you try to burn, or open the Disk Utility Log if there.

"input/output error' when making disc image from DVD

I've had problems installing Logic, and a Pro Apps Genius at Applecare suggested I try making an image of the problematic DVD (Audio Content 1) and then trying an install that way.
While I can make an image of the Install disc to my desktop fine, the Audio Content 1 disc reports an "input/output error".
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Any ideas?

Thanks for your answer.
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External Hard Drive not Readable & Input/Output Error?

I was using my OWC 300gb external hard drive for a while and it's worked great. I had a bunch of files on it, but I recently transferred everything to another external HD I have, which worked fine, so I could erase this 300gb one. I can't remember what happened, but somehow my Macbook doesn't recognize this hard drive. I think erased everything and then unplugged it without ejecting it first. Anyways, nothing is on the the drive anymore and I get this error message:
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This pops up when I restart my Macbook. When I try to use Disk Utility, it greys everything out on the partition and Disk Repair tabs. On the 'Erase' tab, it will allow me to select Erase, but then gives me the error:
"Input/Output error"
Does anyone know how to get my Macbook to see my drive (so I can start to partition it)? For some reason only Disk Utility acknowledges it's there, Finder won't.
Anyone have any tips of what it is or what I can try? I did try to use my OS discs booting up holding C, but that doesn't work either.

Hi there. Everyone is saying on these forums that the hard drive is failing...suck. I went and bought a new when I got input/output error and found that the new one showed the same input output error, making it impossible to partition the disk. Then the guy in the apple service center told me the new one was bad too, after having seen the code that came up related to my new scorpio 250 GB drive. Instead of sending it back, I took it out and installed the old one..however this time with a slihtly more of pressure on the tape holding down the hard drive cable between the hard drive and the circuit board. Amazingly, this time it didn't even show any hard drive at all! Then I understood what was wrong. It was exactly what was indicated an "input/output errror"! ..the cable was broken. I bought a new cable, well the Powerbookmedic sold it as new but it was an old working one that arrived. Immediately, after change of cable the old hard drive and now also the new 250 GB works perfectly! I remember that some interesting symptoms prior to all hard drive problems appeared, such as not being able to start up properly, strange blue screens, flipping question marks etc. I remember that shaking the comp occasionally worked to get it going. No wonder, shaking occasionally made it work and i believe the damaged cable maybe changed position and started conducting. The cable is very sensitive and probably should not be taped down so hard as the first service center guy at apple had done with mine when he fixed it the comp a few years ago. Polymers/plastics bent heavily become fragile/brittle with time and are specially sensitive under pressure/bent. Note that my old damaged cable still conducted and showed the hard drives but didn't work fully. I hope this will help someone, it took me 2 month to figure out..

External Drive Disk Erase Failed with the Error Input/Output Error

I have 2 hard drives in an external FW800 enclosure that I am unable to format. When I go to initialize the drives in Disk Utility, I get the following error message: "Disk Erase failed with the error: Input/output error."
The drives show up in Disk Utility, but I can't repair them (that option is grayed out). Disk Utility correctly ID's the manufacturer of the drives (Maxtor), their size (200gb each), so it's obviously seeing that the drives are there. But it won't let me format them.
The drives are new, by the way; they don't have any data/files on them. I have Disk Warrior, but the drives don't show up there to be repaired -- probably because they aren't formatted yet.
After looking at other posts, I tried switching the jumper settings around on the drives -- from Master/Slave to cable select and back again, but it didn't help. I also tried doing a zero erase (even though the drives are new), zapping the PRAM -- again, no help.
One question I had is whether this could be a bad FW800 cable? The cable is new -- it came with the enclosure, which is an OWC Dual FW 800 enclosure. Other than that, does anyone have any other thoughts about what's causing this? Any help would be greatly appreciated.
Matthew

SOLUTION!!!!
I had the exact same problem. I have the original 20 GB hard drive that came in my Powerbook G4 550MHz and a couple of years ago I traded up for a 60 GB drive and bought a FW/USB enclosure for my original drive to use it to backup my important files. I hadn't backed up in over a year (shame on me!) and I decided maybe I should erase the drive and start from scratch. It was connected via USB.
At that point DiskUtility gave me the exact same Input/Output error. I tried partitioning the drive into 1 or more partitions but came up with the same error. I couldn't figure out what was wrong so I decided to startup in OS 9.2.2, I did that and let it start up, then plugged in the hard drive and it gave me the standard "This disk is unrecognizable, do you want to eject or erase?" so I clicked Initalize. It worked!
Just make sure you choose the MacOS Extended option when initializing out of OS 9 (instead of the MacOS Standard option) so it can be read and viewed in OS X.
If your computer is too new to be able to boot from an OS 9 folder on your drive or an OS 9 CD, then see if a friend or a local library has older computers that are running OS 9 or can boot from it. If not let me know and you can send me your drive and I'll reformat it.
Kind of crazy...I haven't used the OS 9 partition on my HD in YEARS...was even thinking about erasing it since I don't use any Classic applications anymore...good thing I didn't!
Nick
Powerbook G4 550Mhz Mac OS X (10.4.6)

Can't acces to internal laptop hard disc - input/output error

Sometimes when I use my i can't acces to any file on my hdd and i get input/output error when i type commands in console(i even can't halt or reboot). This is used to happen suddenly after few hour of work in one session (not always, it happend three times during last week)
When i get this error the hdd control led is on (I have ibm x60s with ssd hard disc, and normaly this diod only blink sometimes, bbut when i get this error , diod is the whole time floodlite. I didn't any similar problem in google so i posted it here.

Welcome to the forums.
Not exactly alot of info to go on here. Try reading up on the "How to post" article on the wiki.
As for the trouble at hand. With the limited info given, I'd say start off with running some health checks on your disk (smartctl, fsck,...).
Last edited by Gcool (2012-03-29 05:23:32)

.dmg problem input/output error

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