Mac Safe Boot I/o Error
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Please enter a title. You can not post a blank message. Please type your message and try again. TS2570: Mac OS X: Gray screen appears during startup Learn about Mac OS X: Gray screen appears during startup dean14 Level 1 (1 points) Q: disk0s2: i/o error iMac would disk0s2 i/o error fix not boot up past Grey Apple screen on repeated attempts. tried to reboot in safe mode
What Does Disk0s2 I/o Error Mean
with tracking on and after several lines of boot up code it stopped and I get a reparated disk0s2: I/O error. message.What does this what is disk0s2 mean? Posted on Jan 12, 2013 3:28 PM I have this question too Close Q: disk0s2: i/o error All replies Helpful answers by vea1083, vea1083 Jan 12, 2013 7:24 PM in response to dean14 Level 3 (696 points) Jan 12,
Disk0s2 I/o Error Invalid Node Structure
2013 7:24 PM in response to dean14 dean14 wrote:iMac would not boot up past Grey Apple screen on repeated attempts. tried to reboot in safe mode with tracking on and after several lines of boot up code it stopped and I get a reparated disk0s2: I/O error. message.What does this mean?I would suggest you to see the following Apple Support Article:http://support.apple.com/kb/TS1417Best! Helpful (1) Reply options Link to this post by dean14, dean14 Jan 12, 2013 8:12 PM in response to vea1083 disk0s2 i/o error the volume macintosh hd could not be verified completely Level 1 (1 points) Jan 12, 2013 8:12 PM in response to vea1083 Thanks for the suggestion. I ran the fsck check and if did not finish. It stopped in the ** Rebuilding catalog B-tree section. Kept repeating disk0s2: I/O error. Helpful (0) Reply options Link to this post by Samurai2k, Samurai2k May 10, 2013 6:55 AM in response to dean14 Level 1 (0 points) May 10, 2013 6:55 AM in response to dean14 kernel[0]: disk0s2: I/O error.My iMac starts up slow and often stops working during the day after these errors. I run the Disk Utility frequently and it never finds any errors, but it is only a bandaid. How do I fix the issue ?My iMac 24-inch, Early 2008Processor 3.06 GHz Intel Core 2 DuoMemory 4 GB 800 MHz DDR2 SDRAMI can not add anymore physical ramGraphics NVIDIA GeForce 8800 GS 512 MBSoftware OS X 10.8.3 (12D78)kernel[0]: disk0s2: I/O error. Helpful (0) Reply options Link to this post by WZZZ, WZZZ May 10, 2013 7:00 AM in response to Samurai2k Level 6 (13,112 points) Mac OS X May 10, 2013 7:00 AM in response to Samurai2k The I/O error and the other symptoms strongly suggests the drive is failing. First thing is to make a backup immediately.After that test with the free demo of SMART Utility.http://www.volitans-software.com/smart_utility.php Helpful (0) Reply options Link to this post This site contains user submitted content, comments and opinions and is for informational purposes onl
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Disk0s2 I/o Error The Volume Could Not Be Verified Completely
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Disk0s2 Media Is Not Present
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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 to boot http://hints.macworld.com/article.php?story=20110216112523818 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 normal. But after i/o error 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 an HD failure issue. I disk0s2 i/o error 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 write mode by this: mount -uw / It might be good to