Mac Disk1s2 I/o Error
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Mac Disk1 I/o Error
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How To Fix Disk0s2 I O Error
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 up and rise to the top iMac Startup I/O Error Despite Successful Disk Repair imac i/o error 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 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 error 0xe00002ca 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 votes up vote 1 down vote accepted Disk I/O errors literally translate to input / output errors, which occur when the system is unable to communicate properly with the hard drive. This is very indicative of a hardware failure, whether it be with the hard drive itself, the logic board or the SATA data cable that runs between the two. Given the age of your Mac (5~ years) I would assume that the hard drive is to blame. Disk Utility repairs the volume on the disk at a software level
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Disk I/o Error Mac
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Kernel[0]: Disk0s2: I/o Error.
only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to pinpoint cause of disk I/O errors up http://apple.stackexchange.com/questions/104656/imac-startup-i-o-error-despite-successful-disk-repair vote 1 down vote favorite I am getting (seemingly random) disk I/O errors on my bootdrive. At first I thought it was caused by a faulty hard drive, but now I've replaced it and I still get those errors. These are the steps I have followed beginning from the first time I noticed something was wrong: Laptop hangs with just Google Chrome and Postbox (an e-mail application) I restart the laptop, but it never gets past the http://apple.stackexchange.com/questions/77117/how-to-pinpoint-cause-of-disk-i-o-errors screen with the grey apple. Started Apple Hardware Test by holding "D" during startup. This came up with no errors Through Verbose mode, and Disk Utility of the install CD I saw that it had disk I/O errors. I switched the Momentus XT drive for the stock Apple HDD. Installed a fresh copy of Snow Leopard Recovered everything from a Time Machine backup After a day it started giving disk I/O errors again in Console. This makes me think that an app or a setting is causing this as it is unlikely that both the hard drives are corrupted. How can I pinpoint which application is the cause? Below are my system details: MacBook Pro 5,3 2.66 Ghz / 8GB RAM Snow Leopard 10.6.8 First HDD: Seagate Momentus XT 500GB Second HDD: Stock Apple Hitachi 320GB macbook mac hard-drive hardware share|improve this question edited Jan 7 '13 at 15:59 bmike♦ 116k38202443 asked Jan 7 '13 at 15:54 Saaru Lindestøkke 2,03032348 If you are not equipped like a repair shop with ample spares and ability to isolate failures by systematically testing each component in the chain, I would re-seat the cables (or the drive if you are not comfortable getting to the cable interface to the logic board). IO errors are almost always a failing drive so swapping that drive once the error rate (or loss of ti
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 http://hints.macworld.com/article.php?story=20110216112523818 able 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 o error back to 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 i/o error mac that there is 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