haaconsult.blogg.se - Mac os x yosemite usb boot

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IF there are no hangs, go ahead to install AV and again play around.

B: Reinstall Yosemite and bind AD first.

A: AV incompatibility with Yosemite bound to AD.

If something comes up at this point, it can only be:

B: if nothing so far, go ahead for AD bind and play around again.

A: If there are no hangs so far, install your AV and play around again (this is my best root cause candidate).

C: Any device connected (least likely) - disconnect every USB, FiWire, or whatever devices you have there.

B: Your Yosemite installation disk is corrupted (less likely) - replace it with known-good copy.

Other HW components- try something like TechtoolPro or whatever is modern tool for that.

HDD - second most likely, test it by smartctl or something.

RAM - most likely, test it by memtester in this mac.

If it hangs at this point your issue could only be: Play around with it Without any further installation or configuration.ģ.

Install clean (non-upgraded) system (Yosemite )Ģ. What i woul try (not having access to machine):ġ. The wonderfully helpful Apple have removed it & blocked downloads from the App store. In any case, our solution (& the only actual solution currently available ) is to downgrade them all back to Mavericks, & luckily I still have a USB drive with Mavericks on. Whilst some people have pointed out that there may be issues / faults that are causing this, I question why Mavericks was rather tolerant & didn't shutdown at the drop of a hat, & especially every few days. In our case, the mac's are always upgraded with a formatted HDD, all the mac's are within a year old, & the logs dont point to HDD issues or unclean shutdown so it appears that the macs are randomly going into some type of " kernel panic " / "bluescreen" state, when they are left idle overnight & shutting down, hence when the user comes into work in the morning it wont start-up. Generally the solution I found was to pull out the power cord, leave it for a few min & then do the reset NV-ram command,Īpparently there are a few things are the root cause ġ, the Mac had been updated before IE. Apple are refusing to acknowledge that it is a serious issue and the only solution that Apple support offer (Which is Apple's only solution to any non hardware problem) is to wipe the device and re-install the O/S. We have two companies & circa 200 Mac's between the two sites, out of the 200, roughly 100 have had this appling issue.