Most new Macs ship with solid state drives SSDs. Only the iMac and Mac mini ship with regular hard drives anymore, and even those are available in pure SSD variants if you want. These options are not needed for an SSD drive because a standard erase makes it difficult to recover data from an SSD.
In fact, some folks will tell you not to zero out the data on an SSD, since it can cause wear and tear on the memory cells that, over time, can affect its reliability.
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FileVault is whole-disk encryption for the Mac. With FileVault engaged, you need a password to access the information on your hard drive. Without it, that data is encrypted. Losing a FileVault key happens more frequently than it should. Be warned, however, that the initial encryption process can take hours, as will decryption if you ever need to turn FileVault off.
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That deletes the FileVault key, which means any data on the drive is useless. Terminal provides you with command line interface access to the OS X operating system. Once your Mac has booted into the Recovery partition, click the Utilities menu and select Terminal to launch it.
That tells your Mac to securely erase the free space on your SSD. DRIVE should be changed to the name of your hard drive. Get the latest from Backblaze straight to your inbox. You will see a small black bar held down with two screws right next to the hard drive. This must be removed before the hard drive is pulled out. If your hard drive is OEM, there should be a plastic tab that you gently pull on to lift the hard drive, being cautious of the SATA cable Pull gently at the cable connector seated in the end of the hard drive facing the exterior of the case to disconnect the hard drive.
GENTLY slip the edge of the case removal tool under the edges of the rubber coating with the edge of the tool facing towards you and lift the edge back over the edge of the metal backing.
How to erase and format external disks on your Mac
Slowly glide the tool around the edge, lifting the rubber back into place, being extra cautious around the corners. Put the back plate down and don't breathe on it or the rubber stuff will come off again. There will be two cables to plug in and they are directional.
The smaller plug is the data cable that goes into the rectangular USB connector. The other goes to the power cable. If you bought the same one I did, there is a connector that adapts the standard power supply connector to SATA. There is a power switch on this cable.
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You should hear the device chime in Windows, or you can verify that the device driver was recognized and installed in Device Manager. Note: You will not see it show up as a hard drive as the Mac drive format is not diurectly compatible as a disk drive with Windows. I selected the Select a Device radio button and in the Detected Devices drop-down and click Load Select the files and folders you wish to back up in the tree to the left just like you would any Explorer or Finder for you Mac peeps tree, then click Extract.
Follow the prompts to extract the files to the desired location. You will have to babysit it because there are a lot of Mac file names that are not OK on Windows. I used the "Auto-Rename" feature and it worked swimmingly. Install the NEW hard drive back into Mac. Before you do this, there are a couple of screw-in pins that are in the sides of the old hard drive that you will need to hold your new hard drive in place.
Use the T8 mini Torx screwdriver to remove them and place them into the sides of the new drive. These will hold your new drive in place. Put a couple of screws on opposite corners of the bottom plate to hold it in place and protect all the precious bits in there. This should come out clean Click the Erase option in the Disk Utility and complete a format of the hard drive using the Mac OS Extended Journaled option If you like, partition the drive using the Partition option and set the number and size of partitions to the desired size.
Exit the Disk Utility tools using the menu in the upper-left In the recovery menu, click the Reinstall OSX option If you are prompted to connect to a wireless network, you can either connect it to an ethernet cable to speed things along, or click the Wireless icon in the upper-right of the top toolbar to search for an SSID to connect to.
This will permit you to use the online recovery options to download the operating system. Follow the prompts and enter your iTunes login info When prompted to select a disk for installation, select the disk or partition you would like to install OSX on on the NEW hard drive and follow the prompts to initiate the installation. IMPORTANT When the reboot after download occurs, if the installation gets stuck on Verifying Disks or shows symptoms of pixelation on the progress bar and corresponding status text, hold down the power button on the Mac to shut it down.
You successfully diagnosed that the old hard drive is bad. Select the Install OS X drive as the boot device. Wait for an eternity Chelsea M Chelsea M 2 2 silver badges 5 5 bronze badges. Instead of Carbon Copy I used SuperDuper to move the data of my old harddisk to the newone: shirt-pocket. Easiest way, with no thumb drive or cloning: web install. With your Mac near a trusted Wifi access point or plugged into Ethernet Web install begins!!!
You will see a status bar count down with the image of a Globe above.
Select your language. OS X Utilities will appear. Select 'Disk Utility' - it will gather info on your system. Select your new hard drive from the side bar. Select the 'Erase' tab. Select the format and give it a name. Click 'erase' The hard disk is reformatted - a new disk with the name you have it will appear in the side bar. Select your newly minted hard drive and hit 'install' Download of OS X will begin! You're home free! NonCreature NonCreature 1 1 silver badge 4 4 bronze badges.
I didn't choose Disk Utility at the start. And couldn't see any way back apart from restarting and going through the process again. But this is definitely the way to do it! And that would have been nice Excellent instructions in every way! Nice work!
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I had to use a windows keyboard since my Mac keyboard is wireless. Worked perfectly. This is exactly the point of this thread, and should be the actual answer, because it's so clean. I mean the OP didn't want any troubleshooting advice did he? If you did not see a Recovery Partition, proceed to the next step. I've looked on Ebay etc for a used disk but can't find any.