- Step 1) Download and install Stellar Data Recovery Free Edition for Mac on your iMac, Mac mini, or MacBook Pro/Air. Step 2) Launch the software. From the “ Select What To Recover ” screen, customize your scanby clicking the respective toggle switch, then click Next.
- Disk Erase failed with the error: Couldn’t unmount disk. There are several reasons why users cannot complete the necessary tasks because of this error. Usually, the source of the error is a particular boot drive which is modified or corrupted. The alert might also pop up when the driver is being used by other apps or processes.
- Failed Download Error Macbook Air
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Taking your Mac into an Apple Store is always an option, but a repair appointment can take time and money. We suggest trying these common solutions first. These tips will work for any MacBook.
Update your Mac or PC
Install updates for your Mac. If you have a PC, get updates from Microsoft. If you're using iTunes, make sure you have the latest version.
Plug directly into your computer
Plug your iOS device directly into your computer's USB port (not into an attached keyboard or USB hub). If you still see an error alert, try a different cable.
Turn off your computer and your device. Then turn them on again.
Here's how to restart your iPhone, iPad, or iPod touch.
Check your computer’s security software
You might need to update, change, or uninstall software that could be interfering with your computer's connection with iTunes.
Get more help
If you tried these steps and saw the error again, follow the steps for your error code.
In this guide I explain how to access and recover files from a failed MacBook Air, assuming it’s not the hard drive or solid state drive (SSD) related failure.
Let’s say the laptop suffered from liquid spill, was dropped or just stopped working but you don’t have your files backed up.
MacBook Air (Late 2008 and Mid 2009)
These models came equipped with a 1.8″ 120GB SATA HDD or 128GB SSD with a 24 pin ZIF connector.
For the following procedure you will need a small Phillips screwdriver (size #0).
Remove 10 screws securing the laptop bottom cover. Remove the cover.
The hard drive located on the left side from the fan.
Disconnect the DVI/USB/Audio port cable from the logic board.
Just lift it up by the black tab attached to the connector.
Disconnect the hard drive cable from the logic board.
Remove 4 screws securing the mounting bracket.
Remove the hard drive.
While removing it, you will have to un-route the wireless antenna cable attached to the mounting bracket.
Very carefully lift up the cable retainer located on the hard drive connector (green arrow).
The retainer will open up at a 90 degree angle.
Pull the cable out of the connector (yellow arrow).
In order to access data on the hard drive I’ll be using a 24 Pin SATA LIF Macbook Air SSD HDD SATA Adapter.
This adapter is available on Amazon.
Connect the flat cable to the adapter.
Note that contacts on the cable are facing upwards.
Lock the connector by sliding the retainer to the shown direction.
Now connect the second end of the flat cable to the hard drive.
I had some trouble inserting the cable because it was too tight.
Make sure the cable is plugged all the way down into the connector.
Do not bent the cable because it can be easily damaged.
Note that contacts on the cable are facing downwards.
Lock the connector.
You have to make sure that the cable is plugged correctly and contacts on the cable are aligned with the contacts on the connector.
The hard drive is almost ready for data recovery.
In order to connect the hard drive adapter to another Mac computer you will need a SATA to USB cable.
Connect the cable to the hard drive adapter and plug it into another working Mac computer.
If everything is connected properly and the hard drive not failing, it should be detected by the Mac.
Now you can access your files.
MacBook Air 11-inch or 13-inch (2010/2011, 2012, 2013- Current models)
For the following procedure you will need Torx T5 screwdriver and 5-Point Torx Plus (Pentalobe compatible) screwdriver.
Remove 10 pentalobe screws from the bottom cover. Remove the cover.
Remove one Torx T5 screw securing the SSD.
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Pull the SSD out of the slot.
For data access and recovery you will need a special external enclosure for Apple SSD drives available on eBay or Amazon.
SSDs installed in MacBook Air (2010/2011), MacBook Air (2012) and MacBook Air (2013/2014/2015/2017) models are different, even though they look similar.
The SSD removed from a 2010/2011 model will not fit into 2012 or 2013-Current year enclosure and vice versa.
IMPORTANT NOTE: The OWC Envoy enclosure has been specifically designed for use ONLY with the factory SSD found installed in Apple MacBook Air. Do not try to install a third party SSD into this enclosure or you will damage the drive.
Select the right enclosure for your laptop and mount the SSD.
Assemble the enclosure.
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Connect the enclosure to another Mac computer via provided USB 3.0 cable.
If the SSD is in good working condition your Mac should detect it.
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Now you can access and recover needed files.
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You can use Migration Assistant software (built into Mac OS X) to transfer all personal files, settings and applications to another Mac computer.