We're happy to your bootability problems. Before you ask for help, please try the troubleshooting steps below. If you're having trouble with the steps or have run out of options, please let us know how far you got, or how far your Mac gets into the boot process.
Troubleshooting firmware discovery problems When you boot your Mac while holding down the Option key, the will display a list of available startup devices. Using only device drivers that are stored on your Mac's firmware chip, the firmware will scan all of your SATA, PCI, USB, Firewire, and Thunderbolt busses for hard drive devices, then read those hard drive volume headers to determine if a macOS system is available on each volume. Ordinarily, a CCC bootable backup volume will appear in this list, but occasionally your Mac's firmware may have difficulty discovering the hardware that hosts your backup.
If CCC's Task Plan didn't report any configuration concerns for your backup volume and you are having trouble booting from it, try the following troubleshooting steps (in order). T2-based Macs disable booting from an external disk by default If you are attempting to boot a Mac with an (e.g. A 2018 MacBook Pro or an iMac Pro) from your CCC bootable backup, be sure to configure your Mac to allow booting from an external hard drive. Apple describes the procedure in this Kbase article: Please do not, however, change the Secure Boot setting for the purpose of booting from a backup. 'Full Security' is the default setting, and that setting is compatible with bootable backups. T2-based Macs can't boot from encrypted HFS+ volumes Our testing has confirmed that Macs with Apple's T2 controller chip cannot boot from an encrypted, 'Mac OS Extended'-formatted, external volume.
Booting from an external volume works fine in general, but if your external disk is formatted using Apple's legacy HFS+, 'Mac OS Extended' format, enabling FileVault on that volume will render it non-bootable, producing an error message like this on startup. A software update is required to use this startup disk. You can update now or select another startup disk.
Spolier alert: The 'Update' option does not work. This may be a bug in the firmware of the T2 Macs, or it may be a limitation that Apple does not intend to address. In either case, if you want to encrypt your external, bootable backup of a T2-based Mac, we recommend formatting that backup volume as APFS.
Make the Startup Manager load additional drivers Some third-party external devices use. Macs with don’t automatically load Option ROM firmware, so your Mac won't see devices that have Option ROM firmware until you load that firmware. Press Option-Shift-Command-Period at the Startup Manager window to load Option ROM firmware from any currently-attached hard drive enclosures. Here's a partial list of devices we've received reports of that use Option ROM firmware:. Rule out generally incompatible configurations and filesystem anomalies If you are using an external hard drive enclosure or adapter, see whether your enclosure is listed as an enclosure that we've seen problems with in the past.
Also, for good measure, use Disk Utility's 'First Aid' utility to verify and repair any filesystem problems that may be present on the destination volume. Troubleshoot discoverability issues in the Mac's Startup Manager. Turn off your Mac. Detach all peripherals from your Mac except for the keyboard and mouse. Attach the backup disk directly to a USB, Firewire, or Thunderbolt port on your Mac (no hubs, no daisy chaining). Start up your Mac while holding down the Option key. Note: A wired keyboard may be required for this step.
Wait about 30 seconds to see if the backup volume appears. If your backup volume appears at this step and the boot process proceeds past the Apple logo,. Press Option-Shift-Command-Period at the Startup Manager window to load any Option ROM firmware that is present and required for an external hard drive enclosure. Detach, then reattach the backup volume's Firewire, USB or Thunderbolt cable from/to your Mac and wait up to another 30 seconds.
If your backup volume appears, select it and proceed with the startup process. If the backup volume still does not appear as an option, shut down your Mac completely. Then start it up holding down the Option key, waiting another 30 seconds for the volume to appear. Repeat the steps above, but using another interface (e.g. USB if you tried Firewire, Firewire if you already tried USB) and see if the volume appears.
If the hard drive enclosure is bus powered, try plugging in its DC power supply before starting up your Mac. Bus powered enclosures often take a bit longer to spin up or simply don't make themselves available that early in the boot process.
Additional USB device troubleshooting Macs' support for booting from USB volumes has always been second class to Apple-invented interfaces such as Firewire and Thunderbolt. We strongly recommend using Firewire or Thunderbolt for your bootable backup; those interfaces are consistently more reliable when it comes to bootability. If you have a USB-only device in hand, though, here are a couple additional steps you can perform to try to get your Mac to 'see' it early in the startup process. Reboot your Mac while holding down the Option key. If your Mac has multiple USB ports, try attaching your destination disk to each port (and be sure to use the ports on your Mac directly — not a hub, keyboard, or display). If you are using a USB 3.0 enclosure, try using a USB 2.0 cable (yes, it will work!).
USB 3.0 devices are backwards compatible to USB 2.0, but they don't always play well with the older USB device drivers that are embedded within your Mac's firmware. Using a USB 2.0 cable elicits different behavior from the enclosure that often works around compatibility problems that are only exposed when using the Mac's firmware USB drivers. Here are some pictures that show what the ends of USB 2.0 and USB 3.0 cables look like: Reset the Mac's Parameter RAM Lastly, try resetting your Mac's parameter RAM.
PRAM maintains settings related to starting up your Mac, and it's possible that invalid settings are interfering with your Mac's discovery of the external enclosure. To reset your PRAM:. Hold down Command+Option+P+R on startup. Hold down those keys until you hear the second startup chime. Release all but the Option key after you hear the second startup chime. Definitively rule out an incompatible enclosure If the volume still won't boot, it may be impossible for your firmware to detect your enclosure (despite that macOS, once booted and having access to far more device drivers, can see the enclosure just fine).
The Golden Litmus Test for bootability would be to install macOS directly onto the volume. If that fails to make the disk bootable, then it definitely isn't going to happen. Please so we can assemble a list of troublesome enclosures. The backup volume starts to boot the Mac, but is slow or never gets to the Finder There are several visual hints that can indicate how far your backup volume is getting in the startup process:. Apple logo: The 'booter' file was found and executed. Spinning progress indicator: The OS 'kernel' was executed and now has control over the startup process. The kernel will load kernel extension caches, mount the startup disk, then execute 'launchd' which kicks off all of the other system processes.
Blue screen: The WindowServer has loaded, so the system is ready to start loading regular applications or the loginwindow. Loginwindow or your Desktop: The system has finished loading, and is ready for user interaction If your backup volume showed up in the Option key startup disk selection screen, but doesn't display the Apple logo when you choose to start from it, then your Mac is having trouble finding the 'booter' file on this volume. This can occur due to hard drive enclosure interference, due to filesystem corruption on the backup volume, or due to the volume being improperly 'blessed' (blessing a volume stores certain information about the startup files in the volume's header, and your Mac uses that information to start the boot process). Repartition the backup disk in Disk Utility, then reclone your startup disk to the destination. Try booting from the backup volume again. If you see the universal 'No access' symbol after selecting your startup disk This indicates that the kernel cannot load the kernel extension cache, or that it cannot mount the startup disk. This could be due to trying to run an incompatible operating system on your Mac, due to an extension conflict with the enclosure you are trying to boot from, or due to a firmware compatibility problem between the Mac and the enclosure.
We see this quite frequently when trying to boot from a USB 3.0 enclosure, especially on pre-2013 Macs. We also see this more frequently on Yosemite when a critical kernel extension's code signature is invalid. This can happen, for example, when using something like to modify macOS Storage drivers. Try booting into Safe Boot mode (hold down the Shift key as you start your Mac, after selecting the backup volume as the startup disk). Try installing macOS directly onto the cloned volume while booted from the Apple Recovery volume. If the installation also fails, there is a compatibility issue between the enclosure and your Mac that makes it unsuitable as a startup device.
If you used a third-party utility to modify macOS software (e.g. TRIM Enabler), undo that modification, then run the backup task again.
If your Mac never progresses past the progress indicator (below the Apple logo) or stalls at the blue screen while booting from the backup volume, there is probably a problem with some of the system files that are called early in the startup process, or macOS is unable to load the correct drivers for your external enclosure at that stage of the startup process. Again, try installing macOS directly onto the cloned volume while booted from the Apple Recovery volume to rule out a compatibility problem with the enclosure. 'unapproved caller. Security agent may only be invoked by apple software' message appears on startup This message generally appears when the volume you are trying to boot from is full or nearly full. You can remove items from the CCC SafetyNet folder (or the entire folder itself), then empty the Trash to free up some space before trying to boot from that volume again. MacOS should be given at least 2GB, preferably 5-10GB of free space to accommodate the creation of cache and virtual memory files on startup. Configurations with which we have seen some problems.
USB thumb drives are inherently slow devices, we don't recommend using these for making a bootable backup. We have received many reports of inconsistent bootability with SanDisk flash drives (Cruzer, Ultra) on macOS High Sierra. These devices are generally very slow anyway, so we don't recommend using these specifically for a bootable backup., contrary to its published documentation, the enclosure is not bootable via Firewire. We have received a report that the USB 3.0 hard drive enclosure is not bootable due to a discoverability issue. The Nexstar TX from Vantec was bootable (using the same internal hard drive). We have received another report, however, that the Nexstar 6G was bootable, so there may be Mac-specific firmware issues at play regarding this enclosure.
We have received several reports that multiple-bay hard drive enclosures provide inconsistent boot results. In each case, the Mac can boot from the bootable backup as long as the hard drive is placed in the first bay of the enclosure. When placed in other bays, the bootable volume is not discoverable by the Mac's firmware. If you have trouble booting from a disk in a multi-bay enclosure, try swapping the drive positions within the enclosure. Here is a list of the affected enclosures that we have had reports on so far:. We have received a report that the Orico 3588US3 USB3 enclosure is not bootable due to a discoverability issue.
We have received a report that agreeing to Webroot SecureAnywhere's request to 'remove threats' during a backup task can produce a non-bootable backup. Some users report problems booting pre-2013 Macs from USB 3.0 devices that use the 'ASMedia 1051E' chipset (e.g. This and this enclosure). A firmware compatibility issue was introduced by a 2015 firmware update to these Macs that prevents them from booting from a USB 3 device with that older chipset. Some users have reported discoverability issues with ASM1352R enclosures from ASMedia.
One user reported that the MyDigitalSSD Boost enclosure is not bootable. We have received a report that devices attached to the AmazonBasics 10 Port USB 3.0 Hub are not available in the Option-key Startup Manager.
Attach your USB devices directly to a USB port on your Mac if/when you need to boot from your CCC bootable backup. Sonnet Customer Support has confirmed that any device attached to the Sonnet Allegro Pro USB 3 PCI card cannot function as a startup disk. Some users have reported bootability issues with the Inateck USB 3.0 2.5' hard drive enclosure with a model number of 'FEU3NS-1'. Compatibility issues specific to the Samsung T5 Portable SSD Some users have reported that the Samsung T5 Portable SSD cannot function at all as a bootable device on the T2-based MacBook Pro 2018. Efforts even to install macOS Mojave onto this device fail to produce a bootable volume.
This is a popular enclosure that we've seen great success with, and so far these reports are limited to the 2018 MacBook Pro. The Samsung T5 Portable SSD also introduces an exceptional delay during startup, whether you're attempting to boot from that device or your Mac's internal hard drive.
This appears to be a compatibility problem between the Mac's firmware and this particular SSD when the SSD is formatted as APFS. To avoid this delay, we recommend formatting the Samsung SSD as HFS+ until the compatibility problem is resolved:. Open Disk Utility. Choose 'Show all devices' from the View menu. Select the top-level 'parent' device of the Samsung T5 SSD in Disk Utility's sidebar. Click the Erase button in the toolbar. Set the format to 'Mac OS Extended, Journaled' and give the new volume a name.
Click the Erase button. Open CCC and re-select the new volume as the destination, then run the backup task Note: If you have a T2 Mac, please bear in mind that. The Samsung T-series devices will not be a suitable backup device for your T2-based Mac if you require that the backup disk is encrypted.
Related Documentation.
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3.1.2 Apr 24, 2014. Blend tracks seamlessly, create mash-ups in seconds and record smooth mixtapes. Indeed, the 2.5 version features build-in key detection and control, new full screen collection and more. Accurate Key detection for smooth harmonic mixes There's accurate build-in key detection right in Cross DJ: no need for third party software anymore. Key can be displayed in classic notation or harmonic code, making it easy to find matching tracks.
Key control and dynamic display Key is just as important as BPM. Cross DJ displays it straight into the deck header. Match it automatically to the master deck, or change the pitch manually by semi-tones. The dynamic key display reflects those changes, and turns white when in harmony. Browsing by key is now super easy: key compatible tunes are highlighted in bright orange. Focus on other search criterias, and the key still pops up. Easy browsing with new full screen collection Selection is the heart of DJing.
The collection view is now more intuitive than ever with the new mini-players. It gives more space to browse tracks, while keeping an eye on what’s playing. Additionally, you can now drag and drop tracks between players and samplers - useful when you have only one turntable or CDJ.
Peak view markers: better understanding of track structure DJs are used to production software grids to understand a track’s structure. Cross DJ is the first DJ application to show those markers on the track’s peak view, making it easy to mix musical phrases. Mapping for Pioneer DDJ-SX and more Mixvibes’ philosophy is to be as open as possible. Cross DJ 2.5 introduces one to one mappings of the latest popular controllers:. Pioneer DDJ-SX.
Numark 4TRAK, N4 and Mixdeck Quad. Vestax Spin 2. NI Kontrol S4 and X1 What else is new in this update? Do advanced MIDI mappings with MIDI macros (i.e. Assign multiple functions to one button). 2.4.0 May 7, 2013.
PerkyCricket, Professionally Powerful Highly impressed with the capabilities of this freeware and will almost certainly stay as my go to DJ software for Mac. I’m quite familiar with DJ software, and it took me less than 10 minutes to get the hang of and exceed my expectations. The beatgrid editor is easy to find/use and the markers themselves convey the downbeat and the measures, the ability to set ALL of my own hotkeys was enormously useful and mapping them didn’t take long, scanning my library was quick, automatically stores bpms in displayed metadata, the waveforms can be modified to make visualizing songs useful when trying out new things Those are just the features I was extremely impressed by, there’s plenty more to like though. To be fair I haven’t tried uploading anything to SoundCloud, utilized the VDJ portion, or used a MIDI controller, but I’m sure that every feature included with this software is just as powerful and easy to use as the aforementioned pros. PerkyCricket, Professionally Powerful Highly impressed with the capabilities of this freeware and will almost certainly stay as my go to DJ software for Mac.
I’m quite familiar with DJ software, and it took me less than 10 minutes to get the hang of and exceed my expectations. The beatgrid editor is easy to find/use and the markers themselves convey the downbeat and the measures, the ability to set ALL of my own hotkeys was enormously useful and mapping them didn’t take long, scanning my library was quick, automatically stores bpms in displayed metadata, the waveforms can be modified to make visualizing songs useful when trying out new things Those are just the features I was extremely impressed by, there’s plenty more to like though.
To be fair I haven’t tried uploading anything to SoundCloud, utilized the VDJ portion, or used a MIDI controller, but I’m sure that every feature included with this software is just as powerful and easy to use as the aforementioned pros. ChiperSoft, Great featureset for free, but not user friendly. For those who are having problems with no audio output, go to File - Preferences - Audio and change the output device to the correct destination.
For me it defaulted to AirPlay for some reason. Pros: This app is extremely feature rich for being free. Pitch matching, measure sync, and so much information output that I'm actually a wee bit overloaded. It also runs really smooth.
I'm impressed that it correctly parses the iTunes XML file to instantly show my song library, unlike some other apps which insist on scanning the file structure. Support for different bindings on different keyboards is awesome. Cons: Preferences is on the File menu instead of the Application menu, making it easy to overlook. This makes for a confusing first use, since it doesn't default to the built in audio out and it's not clear how to fix that.
Interface is very daunting and not newbie friendly; if you don't know how to DJ already then the purpose of most of the controls will completely illude you. Could REALLY benefit from a tutorial. The chosen star graphics for the itunes playlists are too bright and lack contrast, making them hard to read at a glance. Could also benefit by some different fonts, the text in the collection pane is way too large.
ChiperSoft, Great featureset for free, but not user friendly. For those who are having problems with no audio output, go to File - Preferences - Audio and change the output device to the correct destination.
For me it defaulted to AirPlay for some reason. Pros: This app is extremely feature rich for being free. Pitch matching, measure sync, and so much information output that I'm actually a wee bit overloaded. It also runs really smooth.
I'm impressed that it correctly parses the iTunes XML file to instantly show my song library, unlike some other apps which insist on scanning the file structure. Support for different bindings on different keyboards is awesome.
Cons: Preferences is on the File menu instead of the Application menu, making it easy to overlook. This makes for a confusing first use, since it doesn't default to the built in audio out and it's not clear how to fix that. Interface is very daunting and not newbie friendly; if you don't know how to DJ already then the purpose of most of the controls will completely illude you.
Could REALLY benefit from a tutorial. The chosen star graphics for the itunes playlists are too bright and lack contrast, making them hard to read at a glance.
Could also benefit by some different fonts, the text in the collection pane is way too large. OneTimeGoal, The ULTIMATE DJ App for Macs! I’m fairly new to the whole DJing world and thought I’d give it a go! A friend of mine recommended me this app and since it was free, I couldn’t argue against it.
It downloaded and installed within a few minutes and I was up and running. The app is incredibly well made and it was so easy to get the hang of it.
I made a few mixes of some songs I had been wanting to for so long! The finished product sounded excellent and I was happy as ever.
Click of a button and BOOM! It was up on soundcloud and I could share it on my Facebook. This app has done wonders for me and certainly has got me attached to DJing.
A big thanks to the developers for giving it out for free! I’ve just bought the paid version since there’s nothing like it out there! A must for all! OneTimeGoal, The ULTIMATE DJ App for Macs! I’m fairly new to the whole DJing world and thought I’d give it a go! A friend of mine recommended me this app and since it was free, I couldn’t argue against it.
It downloaded and installed within a few minutes and I was up and running. The app is incredibly well made and it was so easy to get the hang of it. I made a few mixes of some songs I had been wanting to for so long! The finished product sounded excellent and I was happy as ever. Click of a button and BOOM!
It was up on soundcloud and I could share it on my Facebook. This app has done wonders for me and certainly has got me attached to DJing. A big thanks to the developers for giving it out for free! I’ve just bought the paid version since there’s nothing like it out there!
A must for all!