Formatting an external disk or flash drive in macOS Sierra is little different that formatting it in Mavericks and lower versions of OS X. Disk Utility was changed with the release of OS X El Capitan. To reformat the drive in Mac OS X El Capitan or macOS Sierra. Note that this article covers versions of Mac OS X Prior to Lion (Mac OS X 10.7). We also have instructions for creating a Lion-installer drive. Step 1: Disk Utility. Jul 30, 2011 Reboot your Mac with the USB drive plugged in. Hold down the alt/Option key on your keyboard when you hear the OS X start-up sound. Choose the USB Flash Drive from there to boot. Now follow the on screen instructions to install OS X Lion. May 25, 2016 If it boots normally then the hard drive cable inside is bad. Cheap fix, new cables are less than $50 on eBay or Amazon. There are ways to get a Mac installer onto a USB using a PC, you need to Google it for guides. But if the hard drive cable is bad then it won't install so try the above first. Jul 07, 2020 Right-click TransMac, and select the Run as administrator option. If you’re using the trial version, wait 15 seconds, and click the Run button. On the left, right-click the USB flash drive, select the Format Disk for Mac option.
By default, Mac starts from its built-in hard disk, but a startup disk can be any storage device that contains bootable contents that compatible with your Mac. For example, if you install macOS or Microsoft Windows on a USB drive, your Mac can recognize that drive as a startup disk. This guide provides 2 ways to boot a Mac from a USB flash drive.
Requirement
Starting up your Mac from an external disk requires the following:
- Intel-based Mac.
- Bootable USB thumb drive formatted with a GUID partition type and containing an OS X installer or a usable operating system.
Let’s see how to boot a Mac from a bootable USB drive and what to do if your Mac doesn’t start up from it.
Way 1: Boot Mac from USB Drive using Startup Manager
Getting your Mac to load from a USB drive is fairly straightforward. Use the following steps, you can easily set Mac boot from an external drive in Startup Manager, so it’ll only boot from USB that one time.
Step 1: Insert the USB boot media into a USB slot.
Step 2: Turn on your Mac (or Restart your Mac if it’s already on).
Step 3: Press and hold the Option Mac os x flash drive not detected. key immediately after you see the Apple logo. Holding that key gives you access to OS X’s Startup Manager. Once the Startup Manager screen appears, release the Option key. The utility will look for any available drives that include bootable content. Install mac os x 10.6 on external hard drive.
Step 4: Using either the pointer or arrow keys on the keyboard, select the USB drive you wish to boot from. Once selected, either hit the Return key or double-click your selection. The machine will start to boot from the USB drive.
Way 2: Set a Mac Boot from USB Drive using Startup Disk
When you use Startup Disk preferences to set Mac boot from an external drive, so it’ll boot from that disk until you choose a different one. https://womanyellow366.weebly.com/ink-saver-software-for-mac.html. Here is how:
Step 1: Go to Apple menu > System Preference, then click Startup Disk.
Step 2: Click the locked icon and then enter your administrator password.
Download torrent lor du commun zeppelin. Step 3: Select External drive as the startup disk, then restart your Mac.
What to do if your Mac does not boot from the selected drive
If you see a message prompts that your security settings do not allow this Mac to use an external startup disk, check the External Boot setting in Startup Security Utility, and then allow your Mac to use an external startup disk.
Step 1: Open Startup Security Utility.
Turn on your Mac, then press and hold Command (⌘) + R immediately after you see the Apple logo. Your Mac starts up from macOS Recovery. When you see the macOS utility window, choose Utilities > Startup Security Utility from the menu bar. When you’re asked to authenticate, click Enter macOS Password, then choose an administrator account and enter its password.
Step 2: Select “Allow booting from external media“.
If you want to select an external startup disk before restarting your Mac, quit Startup Security Utility, then choose Apple menu > Startup Disk.
Note: If you’re using Boot Camp in a dual-boot Windows/OS X environment, you may be unable to boot negatively into supported versions of Microsoft Windows XP, Windows Vista or Windows 10 operating systems installed on external USB hard drive.
Make sure disk has been formatted with a GUID partition type
Intel-based Macs support starting from an external USB storage device’s volume that has been formatted with a GUID partition type. If you wish to boot from the drive, it’s important to format the partition as “GUID Partition Table” Ambient weather software for mac. rather than either of the other two ahead of time when you use that drive as a bootable drive.
Make sure your disk is bootable
![Create Create](/uploads/1/3/3/9/133908829/998176126.jpg)
Volumes that aren’t bootable and don’t contain a copy of a valid operating system aren’t listed in Startup Disk or Startup Manager. Make sure the external drive you’re trying to start from contains a usable operating system.
Normally, Mac computer cannot read a drive protected by Windows BitLocker, because Microsoft has not implemented BitLocker client for Mac OS. If you insert a BitLocker-protected USB flash drive into a Mac computer, you will be prompted the disk you inserted was not readable by this computer. Even if you can open the drive, all you can get is a BitLockerToGo.exe file and a Read Me.url file, as shown in the figure below. All the contents inside the USB flash drive do not show up on Mac.
That does really bother us when we need to use a BitLocker-encrypted USB flash drive on Mac. However, there is no need to worry now. We released the iSumsoft BitLocker Reader for Mac utility that can help you easily access and read BitLocker-protected USB flash drive on Mac. Here are the steps.
How to access/read BitLocker-protected USB flash drive on Mac
Follow the simple steps.
![Mac Mac](/uploads/1/3/3/9/133908829/376766683.jpg)
Run Mac Os From Usb
Step 1: Install and then launch iSumsoft BitLocker Reader for Mac.
After you download the iSumsoftBitlockerReaderforMac.pkg file on your Mac, just double-click to install it. After installation is complete, open the Launchpad to launch this utility.
Step 2: Insert the BitLocker-protected USB flash drive into Mac.
Insert the BitLocker-encrypted USB flash drive into one USB port on your Mac computer. If a dialog pops up saying that the disk you inserted was not readable by this computer, just click Ignore to ignore it. Once you insert the USB drive, iSumsoft Bitlocker Reader for Mac can immediately detect it and display it in the list and you can see it at a glance because it is labeled as bitlocker.
Step 3: Unlock and mount the BitLocker-encrypted USB drive on Mac.
1) Select the BitLocker-encrypted USB flash drive from the list and click Unlock button.
2) Enter the password for the BitLocker disk to unlock the drive and then click Mount button. Bible louis segond francais free download.
Alternatively, if you have a recovery key file to unlock the drive, check 'Use key file', then click Open to import the recovery key file into this utility, and click Mount.
3) After a short while, the BitLocker-protected USB drive is unlocked and mounted successfully on the Mac. Presonus firestudio project download. You can see the disk icon on your Mac desktop.
Step 4: Open and read the Bitlocker-encrypted USB drive on Mac.
Now you can double click the disk icon on your Mac desktop to open the USB drive and read and write the contents in it.
Tips: If you move files in the USB flash drive to Mac computer, these files won’t be protected by BitLocker. If you move files on your Mac to the USB flash drive, these files will be protected with BitLocker.
Mac Os X Bootable Usb
Step 5: Eject the USB drive from Mac.
After you finish using the BitLocker-encrypted USB flash drive on the Mac, click Eject button to disconnect the drive from the Mac.
Notes: Do not quit iSumsoft BitLocker Reader for Mac until you finish using the BitLocker-encrypted USB flash drive on your Mac.
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