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Mid 2009 モデル番号A1278 / 2.26、2.53 GHz Core 2 DuoプロセッサーEMC 2326

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Stuck on Start up Apple

I recently updated to Sierra and have had endless troubles with programms hanging and constantly shutting down.

Last week my macbook gave up totally and now when switched on all I see is the Apple logo with the progress bar in full dark grey.

I have been through step for step safe mode, fsck - fy mode, tried the Control +T mode to NO avail.

Safe mode gave me an all clear that device is ok.

Today i got diskOs2: I/O error. :-(

does anyone have any advice? I have very important information on the harddrive let alone all the apps i have installed for work.

I was unable to back up from time machine as the computer is blocked by an administrator.

Disk utility also gave an all clear on all hardware.

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The best option here is to use a second Mac and then use Target Disk Mode to copy off your stuff before you go any farther in trying to re-install the OS and apps.

A for fixing things: You'll need to wipe the drive down and re-install your OS. Due to the age of your system you need to run the OS installer either using the second Mac in target disk mode or setup a USB thumb drive as a bootable OS installer following this guide: How to make a bootable OS X 10.11 El Capitan installer drive. Remember your system will only go up to OS-X 10.11.x 'El Capitan'

You may end up needing a new drive here. This system only has a SATA II (3.0 Gb/s) interface so the replacement drive needs to be a SATA II (3.0 Gb/s) drive. Make sure to review the drives specs sheet that it offers support for SATA II many drives today only offer SATA III (6.0 Gb/s) support.

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Alright, so where I live I can not get hold of the cables mentioned (firwire) is there another option? Could I remove hard drive and plug it into another device?

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Do you have a second Mac systems and does it have FireWire connection? You can still get the cable online Staples - 9 Pin/9 Pin FireWire 800 Cable

Yes, you could also take the drive out and then use the second Mac to backup & prep the drive using this cable: Startech 2.5" SATA to USB adapter. Just remember it must be a Mac in order for the installer to work.

Or, just setup a USB drive as easiest way from a second Mac.

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I do have a second mac exactly the same. I have tried connecting them with ether net cable but it doesn't seem to work. Going to try remove and then back up and then reset.

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I have landed up on a screen with disc utility and i have started first aid on hard drives, so far all seem to be OK. There are Internal discs and image discs? What is the difference.

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Hello,

If I were you I would remove the HDD and transfer my data somewhere else, After the Data is backed up you can try the following:

Start computer pressing cmd + R to go to recovery and clean install the OS again.

This link may help.

https://support.apple.com/en-gb/HT204904

Regards

Ricardo

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Sadly, this model does not offer Internet recovery and given the problems with the drive I don't think the hidden recovery partition install will be of much use here, that is if its present.

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earth2inge さん、ありがとうございました!
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