Hacer Un Usb De Arranque Para Mac

The bootable GParted Live image can also be installed on a USB flash drive.
Following are instructions on how to setup GParted Live on your USB flash drive using either MS Windows or GNU/Linux.
NOTE: These installation methods only work when the USB flash drive is formatted with a FAT file system. Some users have reported that only the FAT16 file system worked for them. For other file systems you might try to use grub or some other boot loader.

If a Mac is having some issues a bootable USB of the OS can serve as an emergency disk. It is better than OS X Recovery as you don't have to.

USB setup with Windows

Choose one of the following methods to setup GParted Live on your USB flash drive using MS Windows:

Windows Method A: Tuxboot

1. Download Tuxboot on your MS Windows computer.
2. Follow the USB setup with MS Windows instructions to install GParted Live on your USB flash drive.

Windows Method B: Manual

1. Download the GParted Live zip file.
2. If you already have a partition of at least 300 MB in size on your USB flash drive formatted with a FAT file system then skip to the next step (3).
   Otherwise create at least a 300 MB partition on your USB flash drive and format it with a FAT16 or FAT32 file system.
   The partition must be large enough to hold the extracted contents of the GParted Live zip file.
3. Extract all the contents of the zip file to FAT16/FAT32 partition on your USB flash drive. Keep the directory architecture, for example, file 'GPL' should be in the USB flash drive's top directory (e.g. G:GPL).
4. Browse to your USB flash drive and as an administrator (On the USB flash key, create a shortcut to the makeboot.bat file. Then right-clic on the shortcut, Properties, Advanced and check 'Run as administrator'.), click the makeboot.bat in the dir utilswin32. WARNING! Makeboot.bat must be run from your USB flash drive.
5. Follow the on-screen instructions.
   (PS: The above description is modified from: http://www.pendrivelinux.com/2007/01/02/all-in-one-usb-dsl. Thanks to PDLA from http://pendrivelinux.com)
   

Windows Method C: Unetbootin

1. If you already have Unetbootin installed on your computer then skip to the next step (2).
   Otherwise download and install Unetbootin on your MS Windows computer.
2. Download the GParted Live iso file.
3. From Windows, run the Unetbootin program and follow the instructions in the GUI to install GParted Live on your USB flash drive.

Windows Method D: LinuxLive USB Creator

1. If you already have LinuxLive USB Creator installed on your computer then skip to the next step (2).
   Otherwise download and install LinuxLive USB Creator on your MS Windows computer.
2. Download the GParted Live iso file.
3. From Windows, install then run the LinuxLive USB Creator program and follow the instructions in the GUI to install GParted Live on your USB flash drive.

USB setup with GNU/Linux

Choose one of the following methods to setup GParted Live on your USB flash drive using GNU/Linux:

GNU/Linux Method A: Tuxboot

1. Download Tuxboot on your GNU/Linux computer.
2. Follow the USB setup with GNU/Linux instructions to install GParted Live on your USB flash drive.

GNU/Linux Method B: Manual

1. Download the GParted Live zip file.
2. If you already have a FAT16 or FAT32 partition on your USB flash drive then skip to the next step (3).
   Otherwise prepare at least a 300 MB partition formatted with either a FAT16 or FAT32 file system.
   The partition must be large enough to hold the extracted contents of the GParted Live zip file.
   If the USB flash drive or USB hard drive does not have any partition, you can use a partitioning tool (e.g. gparted, parted, fdisk, cfdisk or sfdisk) to create a partition with a size of 300 MB or more.
   Here we assume your USB flash drive or USB hard drive is /dev/sdd (You have to comfirm your device name, since it's _NOT_ always /dev/sdd) on your GNU/Linux, so the partition table is like: Then format the partition as FAT with a command such as 'mkfs.vfat -F 32 /dev/sdd1'
   WARNING! Executing the mkfs.vfat command on the wrong partition or device could cause your GNU/Linux not to boot. Be sure to confirm the command before you run it.
3. Insert your USB flash drive or USB hard drive into the USB port on your Linux machine and wait a few seconds. Next, run the command 'dmesg' to query the device name of the USB flash drive or USB hard drive. Let's say, for example, that you find it is /dev/sdd1. In this example, we assume /dev/sdd1 has FAT filesystem, and it is automatically mounted in dir /media/usb/. If it's not automatically mounted, manually mount it with commands such as 'mkdir -p /media/usb; mount /dev/sdd1 /media/usb/'.
4. Unzip all the files and copy them into your USB flash drive or USB hard drive. You can do this with a command such as: 'unzip gparted-live-0.4.5-2.zip -d /media/usb/'). Keep the directory architecture, for example, file 'GPL' should be in the USB flash drive or USB hard drive's top directory (e.g. /media/usb/GPL).
5. To make your USB flash drive bootable, first change the working dir, e.g. 'cd /media/usb/utils/linux', then run 'bash makeboot.sh /dev/sdd1' (replace /dev/sdd1 with your USB flash drive device name), and follow the prompts.
   WARNING! Executing makeboot.sh with the wrong device name could cause your GNU/Linux not to boot. Be sure to confirm the command before you run it.
   NOTE: There is a known problem if you run makeboot.sh on Debian Etch, since the program utils/linux/syslinux does not work properly. Make sure you run it on newer GNU/Linux, such as Debian Lenny, Ubuntu 8.04, or Fedora 9.

GNU/Linux Method C: Unetbootin

1. If you already have Unetbootin installed on your computer then skip to step 2.
   Otherwise install Unetbootin on your GNU/Linux computer.
2. Download the GParted Live iso file.
3. From GNU/Linux, run the Unetbootin program and follow the instructions in the GUI to install GParted Live on your USB flash drive.

GNU/Linux Method D: Manual - Overwrite

Since GParted Live is based on Debian Live and this image is aisohybrid, theGParted Live CDimage can be written directly to a USB flash drive.

1. Download the GParted Live iso file.
2. Insert the USB flash drive your Linux computer and wait a few seconds. Next, from a terminal window run the command:
   dmesg

   This command queries the device name of the USB flash drive. For example, you might find the device name is /dev/sde.
3. From a terminal window, enter the following command using the gparted .iso file name and USB device path you discoved in the previous steps.
   For example:
   sudo dd if=/path-to-gparted-live.x.y.z-w.iso of=/dev/sde bs=4M; sync

Downgrade Catalina to Mojave

If you’ve installed macOS Catalina and run into problems with some of your apps, or you’ve just decided that you don’t like it as much as Mojave, the good news is that you can downgrade back to the previous version of macOS. The bad news is that it’s a lengthy process with several steps. Read on to find out how to do it.

1. Back up your Mac

You should have backed up your Mac before you upgraded to Catalina, as you should before you perform any major upgrade or make any significant change to your Mac. However, the files you’ve been working on since you upgraded won’t be up to date on that backup. So, you should copy those files to an external disk, or a cloud storage service like Dropbox or iCloud Drive so you can retrieve them easily when you downgrade. We’re going to completely erase your Mac’s startup disk, so it’s important to copy anything you need now.

Before you backup, however, you should take steps to remove the junk and clutter from your Mac. There’s no point in backing up all the clutter along with the files you really need. To do that, I recommend CleanMyMac X. It’s the easiest way to clear out the clutter on your Mac. Here are just a few things it can do:

• Delete years worth of system junk
• Find hidden apps and folders
• Neutralize Mac-specific malware, like key loggers
• Manage hung apps and heavy CPU consumers
• Update all your software to the latest-supported versions

As you can see, CleanMyMac X does a lot more than just clear out junk files before you backup your Mac. It’s well-worth keeping it on your Mac and using regularly to keep your Mac running smoothly.

2. Save your passwords

When you downgrade mac OS Catalina, you’ll delete everything from your hard drive, including licence keys and settings. So, in addition to making sure you copy all the files that have changed since you last backed up, you should make a note of those. If you use a password manager that syncs with other devices and allows you to store licence codes and encrypted notes, you could use that. If not, any app that allows you to sync encrypted notes will do. Or you can use Apple’s Notes app. It’s also a good idea to take screen grabs of settings to make it easier to restore them later. Remember to copy the grabs to a cloud storage service or an external disk.

3. Create a bootable installer of macOS Mojave

Note, you can skip this step if your Mac shipped with macOS Mojave or if you made a backup with Time Machine before you upgraded to Catalina.

1. If you’re reading this before macOS Catalina ships, you can go to the App Store and search for Mojave, then download it. If it tries to install when it’s finished downloading, quite the installer.
2. If you’re reading this after Catalina ships, you can download Mojave ‎here, but only on a Mac that’s not already running Mojave. When you click that link, Software Update will launch and start to download Mojave. When it’s finished, quit Software Update.
3. Grab a USB stick with 16GB capacity or an external hard drive or SSD and plug it in to your Mac.
4. Launch Disk Utilities and Erase the Drive or USB stick, formatting it as Mac OS Extended (Journaled) and selecting GUID partition map if a selection is available.
5. The easiest way to create a bootable installer is to use DiskMaker X. However, you can also do it in Terminal like this:

• Launch Terminal from Applications - Utilities
• Type: sudo /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled where ‘Untitled’ is the name of your USB stick or external hard drive
• Press Return and wait for the word Done to appear in Terminal.

Whichever method you used, you should now have a bootable macOS Mojave installer. Keep it safe.

4. Uninstall macOS Catalina

1. Make sure your Mac is connected to the internet.
2. Click on the Apple menu and choose Restart.
3. Hold down Command+R to boot into Recovery mode.
4. Choose Disk Utility in the macOS Utilities window
5. Select your startup disk
6. Choose Erase
7. Quit Disk Utility

How to downgrade Catalina to Mojave if your Mac shipped with Mojave

1. Once you’ve erased your startup disk and quit Disk Utility as described above, choose Reinstall macOS from macOS Utilities.
2. Press Continue.

How to rollback from Catalina using a Time Machine backup

If you backed up your Mac with Time Machine before you installed Catalina, you don’t need to create a bootable installer – you can just reinstall Mojave from your Time Machine backup. Make sure it’s plugged in if it’s an external disk. If it’s a network disk, make sure you’re connected to the network.

• Once you’ve erased your start up disk as described above, choose Restore from Time Machine backup in the macOS Utilities window.
• If your backup is on an external disk, select it. If it’s on a network disk, select it and choose Connect to Remote Disk.
• Type in your username and password for the remote disk if necessary.
• Select the data and time of the backup you want to restore from.
• Follow the onscreen instructions.

5. Install Mojave using a bootable installer

If you have a Mac that didn’t ship with Mojave and you don’t use Time Machine to backup, you’ll need to reinstall Mojave from the bootable installer we created earlier.

1. Plug in the installer disk.
2. Go to the Apple menu and choose restart, then hold down the Option key.
3. Mojave will start installing on your Mac.
4. When it’s finished, your Mac will restart and the Setup Assistant will appear
5. Follow the steps in the SetUp Assistant to set up Mojave

Restore your settings

If you have reinstalled Mojave from a bootable disk, rather than a Time Machine backup, you will need to reinstall applications and copy documents across from your backup. That’s where those notes and screen shots you made earlier come in handy!

Once you’ve restored your settings and reinstalled all the apps you need, your Mac is ready to use again, running Mojave instead of Catalina.

Tip: If you want to roll back to an earlier version of macOS than Mojave, you can. To reinstall the OS your Mac shipped with, use the method in ‘How to downgrade if your Mac shipped with Mojave’. If you want to roll back to a version of macOS newer than the one your Mac shipped with but older than Mojave, you can download Sierra and earlier versions from the Mac App Store. Then follow from Step 3 in ‘Create a bootable installer of Mojave’.

My Mac is still underperforming, what to do?

You thought that reverting to macOS Mojave would get your Mac back to norm. But if it didn’t and you still experiencing sudden freeze-ups and glitches, full disk cleanup is your answer. Probably there are too many conflicting system junk files on your drive that you need to plow through.

You don’t need a regular disk cleanup app — most of them are scam — but this tool, CleanMyMac X, is notarized by Apple, and can really do helpful optimizations on your Mac.
Microsoft word for mac high sierra.

• Download the free edition here
• Go to Maintenance tab

Now you can perform some of the tasks suggested by the app, like running Maintenance Scripts. Also, check the System Junk tab and remove all the useless files it recommends you to delete.

As you can see, it is possible to uninstall Catalina if you decide you don’t want to continue using it. It’s essential, however, that you backup your Mac before you upgrade. And remember, before you backup, clear out the clutter with CleanMyMac X. That way you won’t use precious space on your backup drive copying over junk files.

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