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Unibody de aluminio de 13", procesador Core 2 Duo de 2.0 o 2.4 GHz.

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MacBook shows flashing? on screen

I tried to lift the hdd flex cable up so it doesnt make shorts with the body of the mac but that didnt help.

I tried following commands:


CMD + Option + R

CMD + Option + R + P

It is always the same. The startung sounds comes, than after about 15 seconds the flashing Question mark shows up.

So my question is, what could here be broken? If it is really the hdd cable. Could i just buy a hdd caddy downlod osX.dmg from internet, copy it to bootable usb and will it work than? Or could i just cmd option r and install os x from the internet?


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Do keep in mind this system can only support upto El Capitan 10.11.x

As far as using a dual drive setup I would first focus on getting the HD bay working before going down that path.

What are your drive or drives you currently have that you are working with. Can you give us the make and models of each so we can make sure they are compatible.

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Well that I didn’t know, that it suppa up to 10.11

I have got only the black scorpio ( shich should be working) from august 2012 with 320gb and 7200rpm 3.0gb/s

And a usb with 16 and one with i gb

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Does your machine have a split bottom cover?

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I cannot answer that, because i have a not original cover from an 2009 mac which is not split

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If you have a friend with a Mac you could try connecting your system to his in Target Disk Mode this will allow your friends system to run Disk Utility on your drive to see whats wrong. I’m suspecting you may had a bad drive or the SATA cable is worn out.

If you can’t do this you could have your friend create a bootable USB thumb drive or if you have an older model a bootable FireWire drive. Then you can boot up with it to check your drive.

Another option here is to take the drive out and use a SATA to USB adapter cable like this one: Startech 2.5" SATA to USB adapter to hook up your drive to another Mac system. This will allow you to gain direct access to the drive to salvage any files to another Mac as well as test it using Disk Utility.

As you didn’t tell us if this is the a replacement drive be aware your system only supports SATA II (3.0 Gb/s) so do make sure the drive spec sheet lists this I/O speed many of the newer drives won’t run this I/O speed.

As far as the HD SATA cable it tends to wear on many of the 13” models as the aluminum uppercase has a rough surface which wears it as well as the bends around the corners. As a matter of course I replace the cable when ever I do a drive replacement just to make sure. Here’s the needed part: MacBook Unibody (A1278) Hard Drive Cable and the guide to put it in.

Imagen de MacBook Unibody (A1278) Hard Drive Cable


MacBook Unibody (A1278) Hard Drive Cable


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It is a black scorpio rpm 7200 from the year 2012, so it should have 3.0Gb/s. With 320GB

I have a windows pc and hooked the hdd into it ( instead of the cd/dvd reader) but its not showing up in my windows OS

But if i go diskpart —> list disk, it shows me a hard disk with 296GB.

And i think i saw in the bios too something.

A program which i created a bootable GPT USB (idk the name of the program right now :’) ) shows me also a disk with 296 GB, without any name/keys ...

i did create a os x el capitan 10.11 latest version disk, if that hels something

I tried to insert this bootable GPT USB into my mac and holding these keys:


Command + R

Command + option + R

—> but: the flashing question mark is still there

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Windows natively can't access the Mac drive you'll need a special driver to allow the Windows OS to do that. It does sound like the drive is somewhat functional as you can see the partition.

As to why you are not able to access the USB or boot up under it has to do with the fact you need to format the USB with GUID and a Journaled OS partition. Its been awhile, so I don't remember if you can use a USB boot drive, for some reason I'm thinking you need a FireWire boot drive. But in any case you need a Mac to create the bootable drive so if you test it on the system you used to create it will tell you if you've done it right. Here's a bit more: Apple Partition Types and How and When You Can Use Them

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Here's your drives specs: WD Scorpio Black Your drives SATA I/O is SATA II (3.0 Gb/s) so your good here!

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You really need to create the bootable drive using another Mac. Thats what I do as its just easier and reliable.

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