Apple Disk Os 2 I/o Error
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Mac Disk1 I/o Error
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Osx I/o Error
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Diskos2 Io Error Mac
how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top iMac Startup I/O Error Despite Successful Disk Repair up vote 1 down vote favorite My Early 2008 iMac with OSX 10.8.5 no longer boots beyond grey screen with spinning gear. Verbose mode shows a load of I/O errors. Disk corestoragegroup completeiorequest error Verify/Repair run via recovery partition completes successfully, as does fsck terminal command in single user startup mode (it modified the files on first run but not second). I reset the NVRAM too. However none of these have helped, same I/O errors afterwards. Thinking it might be due to OS files being corrupted I created a USB drive with installable version of OSX (actually 10.9 Mavericks), but it crashes during install. I wanted to try Apple Hardware Tools diagnostics but the startup shortcuts D or opt+D don't work - I read it's been removed so presumably I'll need to find a way to reinstall it first. I've tried the usual fixes such as safe mode (won't boot), removing all peripherals, even the RAM sticks. I can't hear the drive making any grinding sounds. Is there anything else I can try to fix this? Is it likely the HD has died even though Disk Repair is returning success? hard-drive imac boot startup install share|improve this question asked Oct 8 '13 at 14:46 Ben Wise 335324 add a comment| 1 Answer 1 active oldest vo
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 how to fix disk0s2 i o error Us Learn more about Stack Overflow the company Business Learn more about hiring developers disk0s2 i/o error the volume macintosh hd could not be verified completely or posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question disk0s2 i/o error invalid node structure 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 http://apple.stackexchange.com/questions/104656/imac-startup-i-o-error-despite-successful-disk-repair 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” http://superuser.com/questions/627882/macbook-freezes-console-printing-kernel-disk0s2-i-o-error 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 formatti
Miniguide to fixing Volume-Filesystem errors Apr 29, '11 07:30:00AM • Contributed by: santa97298 There are many drive/filesystem errors that can occur on a Mac. Here are some common symptoms that are indicative of some of them: Not able http://hints.macworld.com/article.php?story=20110216112523818 to boot the system: You tried to boot. Apple logo appeared, and wheel spun for about 15-20 seconds, then machine turned off. This repeated every time you tried to boot the system. (REASON: The system does not find your HD and thus the OS to boot). Everything seems to work fine till your system hangs briefly and in an unpredictable way. You wait for a while, and the system magically comes back to o error normal. But after another while, the same thing re-occurs! (This cycle repeats in the current session). You can do these simple things to check for other possible causes: Run Activity Monitor to see that this is NOT due to temporarily high CPU and/or Memory usage. Check the system log using Console.app or running tail -f /var/log/system.log in Terminal. If your system is having some I/O error then it is sure that there is 2 i/o error an HD failure issue. I don't claim to be an expert on this subject matter, just an (over)enthusiast Mac user. This guide is purely based on my personal experience and is bound to contain errors. So, USE IT AT YOUR OWN RISK! [crarko adds: Consider this hint to also serve as a reminder to check your backups...]Possible problems: Your HD Volume/FileSystem is corrupted Verification: Use Disk Utility and run "verify" to check it. 2. Your HD is dying. Verification: Use Disk Utility and see the SMART status of your HD, although this isn't always reliable. Before making any repair of the disk, make sure that you have the latest backups. Repair might let loose the volume/filesystem info all together and then there will be no other choice than to recover the data by some data rescue s/w like Data Rescue! If you don't have a current backup, you can try booting in Single-User mode by holding Command+S on startup. Then try doing a manual backup using commandline tools like cp or ditto. Note: The disk usually gets mounted in read-only. This could be good to get a manual backup by cp. But if everything else fails and you want to remove the important/personal data before sending it to repair, you can try mounting it in the wr