Q: How long should I let Safe Mode startup run? I keep getting the "disk0s2 i/o error" message and I'm just not sure when to give up ... How long should I let Safe Mode startup run? I keep getting the "disk0s2 i/o error" message and I'm just not sure when to give up and try a different method. I already ran disk utility in Recovery Mode and it said there were no repairs needed. more
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Helpful answers
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May 2, 2015 11:33 AM in response to Joybie02by gravy3232,I would recommend trying to repair the disk from single user mode Resolve startup issues and perform disk maintenance with Disk Utility and fsck - Apple Support
Usually that error message is due to a failing hard drive.
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May 2, 2015 11:41 AM in response to gravy3232by Joybie02,so just give up on Safe mode and hard power it down and then restart using those options?
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May 2, 2015 12:46 PM in response to Joybie02by K Shaffer,You have limited opportunity to attempt to create a backup of your created files.
That is what the SafeBoot or safemode appears to allow you -- at the moment.
Since the hard disk drive exhibits signs of failure or other major issues, plan
on a replacement in the near future. You may be able to get the computer to
start up in a regular full OS X (not safe mode) but consider its hours are limited.
An externally enclosed hard disk drive (with own power supply, not relying on
Mac ports to run it) is a good basic means of which to use a disk utility to make
a copy or a Clone of the current OS X. This may help retrieve an archive that
could be used along with a Time Machine backup, to restore your Mac once you
get a new hard drive installed inside.
Good luck & happy computing!