Mac Os X Kernel 0 Disk0s2 I/o Error
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What Does Disk0s2 I/o Error Mean
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and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are disk0s2 i/o error the volume macintosh hd could not be verified completely voted up and rise to the top MacBook freezes, console printing kernel: disk0s2 I/O error up vote 2 down vote favorite 1 Yesterday I've closed my MacBook , opened it today and experienced horrible performance slowdown, beach ball and eventually a freeze. After several reboots I managed to close most of my applications but the problem presisted. My free disk space is about 11GB. I opened “Spotlight” disk0s2 i/o error invalid node structure and saw the file indexing process in progress. After waiting for about half an hour I have decided to turn the indexing off, and did that through terminal. The slow performance persisted and when I opened the “Console”; I am getting PM kernel: disk0s2: I/O error Every second. As per Google search this is an HD problem. But how and why? Among this error I am also getting a bunch of repeating messages: Aug 4 22:37:03 MacBook–Air–2 com.apple.launchd[1] (com.apple.iCloudHelper[4459]): Exited with code: 1 Aug 4 22:37:03 MacBook–Air–2 com.apple.launchd[1] (com.apple.iCloudHelper[4459]): XPC Service could not exec(3). Resetting port. Aug 4 22:37:03 MacBook–Air–2.local PhotoStreamAgent[4455]: AOSKit ERROR: XPC CLIENT: Connection [0x7fa20a54eba0] event handler received event with type: [XPC_TYPE_ERROR]. Description: [Connection interrupted] Aug 4 22:37:03 MacBook–Air–2.local CalendarAgent[193]: AOSKit ERROR: XPC CLIENT: Connection [0x7fca1b4cfda0] event handler received event with type: [XPC_TYPE_ERROR]. Description: [Connection interrupted] Aug 4 22:37:03 MacBook–Air–2.local PhotoStreamAgent[4455]: AOSKit ERROR: XPC CLIENT: Error received in reply message (msg=0x7b0f9b30), Description: [Connection interrupted] Aug 4 22:37:03 MacBook–Air–2.local CalendarAgent[193]: AOSKit ERROR: XPC CLIENT: Error received in reply message (msg=0x7b0f9b30), Description: [Connection interrupted] Aug 4 22:37:03 MacBook–Air–2 com.apple.launchd[1] (com.apple.iCloudHelper): Throttling respawn: Will start in 8 seconds Aug 4 22:37:04 MacBook–Air–2 kernel[0]: disk0s2: I/O error. Anything I can do without format
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Disk0s2 Media Is Not Present
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Disk0s2 I/o Error The Volume Could Not Be Verified Completely
nsfw:no)include (or exclude) results marked as NSFWe.g. subreddit:aww site:imgur.com dogsee the search faq for details.advanced search: by http://superuser.com/questions/627882/macbook-freezes-console-printing-kernel-disk0s2-i-o-error author, subreddit...this post was submitted on 14 Aug 20143 points (100% upvoted)shortlink: remember mereset passwordloginSubmit a new linkSubmit a new text postmacsysadminsubscribeunsubscribe3,576 readers~1 user here nowThe reddit for Mac Professionals. Please keep all content and discussions professional. Community https://www.reddit.com/r/macsysadmin/comments/2djoqz/errors_in_mac_os_x_1068_mac_mini_kernellog/ Resources AFP548 Wiki Graham Gilbert's blog Greg Neagle's Blog IRC - ##osx-server on irc.freenode.net Krypted Mac Enterprise Mailing List Rich Trouton's Blog Useful Tools DeployStudio - Image Macs AutoDMG - Make OS images Munki - Deploy software MunkiAdmin - Manage Munki with a GUI MunkiReport-PHP - Monitor Munki with a browser AutoPkg - Automate updating Munki's repository AutoPkgr - Manage AutoPkg with a GUI Reposado - Locally mirror Apple software updates Margarita - Manage Reposado with a browser CreateOSXInstallPkg - Turn App Store installers into deployable .pkgs CreateUserPkg - Create .pkgs that can add users Outset - Easily
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn http://apple.stackexchange.com/questions/17160/imac-freezing-intermittently-every-few-minutes-how-can-i-fix-this more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Different Questions Tags Users Badges Unanswered Ask Question _ Ask Different is a question and answer site http://simon.heimlicher.com/articles/2010/01/04/disk-failure for power users of Apple hardware and software. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted i/o error up and rise to the top IMac freezing intermittently--every few minutes. How can I fix this? up vote 12 down vote favorite 2 A couple of days ago, I was browsing, and downloading something from Usenet, when my iMac all of a sudden froze up, grinding to an unbearable slowness. After trying to tolerate what was happening for 5 minutes, hoping it would pass, I finally gave up, and restarted disk0s2 i/o error the computer manually. To my horror, for about a day, I was plagued with the interminable locked up gray Apple startup screen, but thankfully the next morning, left it on from a restart to find later that the computer had managed to boot up to a login screen, everything seemingly fixed. That was background. Now I have a different problem: My iMac is subjecting me to intermittent freezing episodes; I will be writing, or browsing in peace for a few minutes, before everything locks up, save for perhaps only the cursor. When the hanging is finished, the computer then resumes the missed operations (typing, etc.) in a hurry, as if one were watching a fast-forwarded video. Each hanging episode lasts from anywhere from 5 seconds to upwards of a minute; moreover, the system pops a window telling me that I don't have enough disk space for memory, though Finder consistently tells me I have upwards of 30GB worth of space (on a 250 GB HD). There's also another curiosity: When I tried using Software Update to update everything — trying to fix this problem — upon Restart it told it couldn't install a recent Security Update because "the source media [you?] are installing from is dam
the spinning beach ball for multiple minutes and the rate at which this happens increases rapidly over the course of a few hours or days. Another alarming sign is when your Mac suddenly fails to boot. Lastly, if you see entries like the following in /var/log/system.log and the disk device in question is a hard disk, that's another strong sign of trouble: Dec 30 15:42:25 MacBook kernel[0]: disk0s2: I/O error. The first thing to do is to boot from your Mac OS X Install DVD and run "Disk Utility" "Repair Disk" on the hard drive in question. Also check for the SMART status (bottom right of Disk Utility's window). However, even the status is "Verified", this does not guarantee all is well, unfortunately. If after the repair you still have trouble, get Smart Utility from Volitans Software and see if it shows you any attributes in red type, as shown below. Then click "Show All" in the "Attributes" section and again check for any red type. If it looks as follows, backup all data you can and get an exchange for your drive. Simon Heimlicher Jan 4th, 2010 Hints, OS X « Boost Jam (bjam) Printliminator » I work as a Project Manager at UBS Switzerland AG in Zurich, Switzerland. You can email me at s m n h i l c e . o \ / \ / AT \ / \ / \ / \ / \ / \ / \ i o e m i h r c m Related Articles Zeroing all Data on a Hard Disk STOP Error 0x7B Inaccessible Boot Device Time Machine: Inherit Backup Using `tmutil` How Slow is Lion's File Vault 2? Time Machine Sparse Bundle is read-only Comments Please enable JavaScript to view the comments powered by Disqus. Copyright © 1999–2016Simon Heimlicher—All rights reserved.