Mac Clone Software Via Thunderbolt
Why would you do this?
- It's fast. Over Thunderbolt, cloning a roughly 30 GB (of used space) image takes only a few minutes.
- Minimal additional cost. Sure, you probably paid money for your Macs, but this method uses only included software.. and one US$40 cable.
- No external media or extra setup. You don't have to network your computer, install additional software, or have an external hard drive. You can go straight from computer to computer with just a Thunderbolt cable.
May 08, 2020 How to migrate your old Mac's data to your new Mac Start with your old Mac. Connect the Thunderbolt, FireWire, or Ethernet cable from your old Mac to your new Mac. If you are using local Wi-Fi, make sure both Macs are connected to the same Wi-Fi network. Open your new Mac. Launch a Finder window by clicking on the Finder icon in your Dock.
Requirements
- Two Macs—one source, one target.
- Rename the hard drive on the source Mac to something unique (don't call it Macintosh HD, which is the default). Easiest way to do this is to go to Finder >Preferences and then check or tick Hard Disks under Show these items on the desktop. Then, when you see the hard drive icon appear on your desktop, you can rename it.
- A Thunderbolt cable.
- The main hard drive partition of the source Mac must be equal to or lesser in size than the target Mac hard drive. For example, if you are imaging from 250 GB to 250 GB, that's okay; if you're imaging from 250 GB to 500 GB, that's also okay; but if you're imaging from 1 TB to 500 GB, that won't work.
Mac Thunderbolt Cable
Procedure
Note: If you're using El Capitan (10.11) or later, the procedure has changed. More details at Cloning an image using Thunderbolt and Disk Utility (post–El Capitan)
The procedure below is for Yosemite (10.10) and earlier.
- On the target Mac, reboot the computer while holding down the T key on the keyboard to boot it into Target Disk mode. If you have done so successfully, you will see what appears to be a white lightning bolt on the screen.
- On the source Mac, reboot the computer while holding down the Cmd and R keys on the keyboard to boot into Recovery Mode.
- Then, connect the Thunderbolt cable to both Macs.
- On the source Mac, select Disk Utility from the available options.
Once Disk Utility launches up, click on the main partition (the one you renamed earlier) of the source Mac. Since Disk Utility can sometimes load up the target Mac visibly higher or lower than the source Mac, it's critical that you have them uniquely named (that's why we renamed the drive earlier). So click on that unique name.- Click Restore. You should see the source as the uniquely-named drive.
- Then drag the main partition of the target Mac over to the Destination area.
- Click Restore.
- That's it! Once it's done, you can boot your target Mac into regular mode, and it should be a clone of your source Mac.
A flaw in the Thunderbolt port on your Mac may allow an attacker to access your data without authorization. A hacker can even break in when the drive is encrypted and the Mac is locked with a password.
This flaw is not limited to a specific machine, according to security researcher Björn Ruytenberg, it affects all machines between 2011 and 2020 that have Thunderbolt or Thunderbolt-compatible USB-C ports.
The vulnerability lies in Intel’s Thunderbolt controller chips. Ruytenberg has discovered seven different vulnerabilities and developed nine methods to exploit them. The attack can be made stealthily, so the user is not aware of the attack, and no traces are left behind.
Users don’t have to install any software or click on a phishing link to open up this vulnerability. It’s a hand-on attack so a hacker does need contact with the computer, but they only need five minutes to break in and access your data, claims Ruytenberg.
Thunderspy is stealth, meaning that you cannot find any traces of the attack. It does not require your involvement, i.e., there is no phishing link or malicious piece of hardware that the attacker tricks you into using. Thunderspy works even if you follow best security practices by locking or suspending your computer when leaving briefly, and if your system administrator has set up the device with Secure Boot, strong BIOS and operating system account passwords, and enabled full disk encryption. An attacker only needs 5 minutes alone with the computer, a screwdriver, and some easily portable hardware.
Not all computers are equally vulnerable. Windows and Linux computers are fully vulnerable and a Mac is fully vulnerable when running Windows or Linux in Bootcamp. Ruytenberg cautions users “to avoid using either operating system until a fix has been issued to address this vulnerability.”
Macs are only partially vulnerable when booted into macOS because of additional security Apple has added to macOS. When booted into macOS, the attack device must fool macOS into thinking it is an Apple-approved Thunderbolt accessory. Once connected to a Mac, the forged device shows up as a legitimate Thunderbolt in the system information app.
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Ruytenberg reached out to Apple and Intel with the details of his finding. Intel responded with a quick statement that claims there are protections in place to mitigate this attack. The company also instructs people to avoid an attack by not allowing access to the computer and by avoiding untrusted devices.
In 2019, major operating systems implemented Kernel Direct Memory Access (DMA) protection to mitigate against attacks such as these. This includes Windows (Windows 10 1803 RS4 and later), Linux (kernel 5.x and later), and MacOS (MacOS 10.12.4 and later). The researchers did not demonstrate successful DMA attacks against systems with these mitigations enabled. Please check with your system manufacturer to determine if your system has these mitigations incorporated. For all systems, we recommend following standard security practices, including the use of only trusted peripherals and preventing unauthorized physical access to computers.