Disk I/0 Error Mac
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Disk0s2 I/o Error Mac
question and answer site for power users of Apple hardware and software. Join them; it only takes a minute: Sign up Here's how it works: osx i/o error 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
Corestoragegroup Completeiorequest Error
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 be due to OS files being corrupted I created a USB drive with installable version of OSX (actually 10.9 Mavericks), but diskos2 io error mac 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, often it will report when hard drives have a hardware failure but there are also times when it repairs correctly despite communication errors still being present. Apple Hardware Test (AHT) IS pretty good at giving you a solid answer but as you've foun
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 the system: You tried to boot. Apple
How To Fix Disk0s2 I O Error
logo appeared, and wheel spun for about 15-20 seconds, then machine turned off. This repeated every
Kernel[0]: Disk0s2: I/o Error.
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 disk 2 i/o error 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 another while, the same thing re-occurs! (This cycle repeats in the current session). You can http://apple.stackexchange.com/questions/104656/imac-startup-i-o-error-despite-successful-disk-repair 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 don't claim to be an expert on this subject matter, just an (over)enthusiast Mac user. This guide is purely based on my http://hints.macworld.com/article.php?story=20110216112523818 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 commit the write by running the sync command. There are other modes to try backups if single-user mode is not available. Command+V (Verbose mode): Probably will point you towards the error due to which you are not able to go into Single Use
General Hard Disk Slow Downs and Issues.. If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have http://www.mac-forums.com/showthread.php?t=20062 to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Welcome to http://www.neogaf.com/forum/showthread.php?t=477677 Mac-Forums! Join us to comment and to customize your site experience! Members have access to different forum appearance options, and many more functions. Results 1 to 15 of 15 Thread: Disk o error I/O error - General Hard Disk Slow Downs and Issues.. Tweet Thread Tools Show Printable Version Subscribe to this Thread… 06-11-2005,05:14 PM #1 sunk976 Guest Disk I/O error - General Hard Disk Slow Downs and Issues.. Hello! Im posting here out of desperation for some kind of help with my Powerbook. It is a problem that has only started to occur in 2 i/o error the last few days. The hard disk will begin to seek more aggressively causing itunes to skip and applications to halt. The colour wheel appears whilst the disk continues to seek and then all of a sudden it will go back to working correctly. The more applications running the more frequent the slow downs. I have been watching activity monitor whilst it occurs and none of the programs are using large amounts of processor time, infact the activity monitor itself is always on top with about 10%. Activity monitor does report large amounts of disk activity. I checked console and the system logs are reporting the following: Jun 11 20:23:13 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:45:57 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:46:38 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:48:00 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:48:42 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:49:26 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:51:38 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:52:21 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:53:03 isunk kernel[0]: disk0s9: I/O error. Jun 11 20:53:45 isunk kernel[0]: disk0
stuck at startup screen - Help #1 My iMac (snow leopard) got stuck and I had to hard reboot it. Now its stuck on the white screen with the grey apple logo. I tried going to safe mode, which it did, then it got stuck with an empty back ground. I left it for more than 20 minutes then I did another hard reboot. Now it won't go to safe mode again, and it still gets stuck on the startup screen. I also don't have the installation disk, and my DVD drive doesn't work Is there anyway that I can fix this? I've tried some of the suggested solutions like Start while holder cmd+option+P+R but nothing. Did my HDD get fried? Myoclonic Jerk View Public Profile Send a private message to Myoclonic Jerk Find More Posts by Myoclonic Jerk report this ad RobotHaus Member (06-08-2012, 10:19 PM) Quote #2 If you HDD is busted then it would boot up with a question mark on the screen. You can try to get one of those USB drives with OS X on it to do a fix or if there is an Apple store nearby and you think you can deal with it, try that. Also try holding "Option" when starting up to see if it detects your disk. RobotHaus View Public Profile Send a private message to RobotHaus Find More Posts by RobotHaus Napoleonthechimp Member (06-08-2012, 10:24 PM) Quote #3 If it is snow leopard then you'll need the OS X install disk to recover / reinstall the operating system (which should keep your data if you don't format the disk) but you may be able to do the USB thing as an alternative. Last edited by Napoleonthechimp; 06-08-2012 at 10:26 PM. Napoleonthechimp View Public Profile Send a private message to Napoleonthechimp Find More Posts by Napoleonthechimp sgi02 Banned (06-08-2012, 10:27 PM) Quote #4 If you have access to another Mac and a FireWire cable you could place your iMac in target disk mode and then try to repair permissions from the other machine. Ive ran into this issue a few times and in my experience it's either an issue with permissions / corrupted files or a failing hard drive. Good luck! sgi02 View Public Profile Find More Posts by sgi02 Myoclonic Jerk Member (06-08-2012, 10:28 PM) Quote #5 I just tried the cmd+S and it gave me an error disk0s2: I/O error . I think my HDD is gone I wanted to try fsck, but I don't think I can even do that - http://support.apple.com/kb/ts1417 Myoclonic Jerk View Public Profile Send a private message to Myoclonic Jerk Find More Posts by Myoclonic Jerk Napoleonthechimp Member (06-08-2012, 10:29 PM) Quote #6 It likely is a permissions problem as someone royally fucked up the permissions for my ma