Even so, its still easy to create a usb installation disk for os x lion if you want to install lion on a freshly formatted hard drive, if youre in an emergency booting situation, or if you need to repair your mac s hard drive. Feb 29, 2016 today i am showing how to make a boot able usb drive for mac using a. Learn about selecting a startup disk, including what to do if your mac doesnt start up from it. How to make a bootable install disk of mac os x lion cult. Jul 20, 2011 open disk utility on your mac located in the utilities folder and find the burn option. How to start up your mac from a bootable cddvd, usb thumb. Start by clicking a disk or volume in the column on the left and then click one of the five tabs. Disk utility is desined to repair minor errors on disks.
Inside the mountain lion installation tool, you can open disk utility and erase your macs hard drive. Disk utility in os x mountain lion if youre having problems with your hard drive or need to make changes to it, disk utility in os x mountain lion is a good place to start. A number of other disk related tasks and tools available. But honestly, the chances are small that disk utility is going to fix the problem. The installer presents a list of storage devices connected to your mac. Create a bootable clone using disk utility apple community. How to use your macs disk utility to partition, wipe, repair.
Mar 24, 2020 the utilities in macos recovery help you restore from time machine, reinstall macos, get help online, repair or erase a hard disk, and more. Panthers disk utility and creating mac os 9 booting. For example, it wont work when you want to resize boot camp partition to arrange free disk space, or when you need to partition an external hard drive only to find the option is grayed out. Dec 01, 2016 this tutorial will help you create a bootable usb flash drive for your mac on a windows computer. Or use optiond to start up to this utility over the internet. Aug 06, 2016 disk utility applies most of the changes in real time, without the need to reboot or boot on an external environment. How to repair external hard drive greyed out in disk utility. Dmg is a disk image format for mac just like an iso file in windows. You dont boot into disk utility, but rather boot into an os, then use disk utility. The app works amazingly fast in resizing all types of ntfs and hfs based disk volumes.
Macs with the t2 chip have more options here including firmware password protection and secure boot and external. Disk utility applies most of the changes in real time, without the need to reboot or boot on an external environment. We officially recommend running data recovery on your startup disk only when your mac is booted from a different drive, using external. The tool is used to repair mac disk errors in your mac such as corrupted files, nonresponsive external devices, or the suddenly quitting of multiple apps. Yesterday apple unleashed lion, the latest version of os x for mac computers. Connect the bootable installer to a compatible mac. Mac users interested in download disk utility generally download. How to create a bootable installer for macos apple support.
After creating a new partition and if we havent set up time machine yet, the system will ask us if we want to use the new partition for our mac os x backups. It boots normally to the login screen with the pin edit. The utilities in macos recovery help you restore from time machine, reinstall macos, get help online, repair or erase a hard disk, and more. The steps above can also be used to create a bootable mac os x lion usb by using the installesd. How to pick a startup disk for your mac at boot time.
Once its finished, youll have a shiny new lion install dvd. How to start up your mac from an external usb storage device if your usb thumb drive, usbbased external disk or flash storage contains a usable operating system or an os x installer, you can select it at boot time using os xs builtin feature called startup manager, which can be invoked via a simple keystroke. Use disk utility to repair your disk or erase your disk or other storage device. Head to the go menu in the finder and select utilities. How to make a bootable macos installer apple, mac, iphone. To quit macos recovery, choose restart or shut down from the apple menu. It is also an overall mac data management solution that allows you to back up and restore your data, completely wiping out a partition, etc. You need to find the volume you created using the macs disk utility. Turn on your mac by pressing the power button, or restart it if. The following image demonstrates disk utility in mac os x snow leopard. Although disk utility is the default disk manager app built into macos, it has limited functions when it comes to advanced partitioning.
Use startup manager or startup disk preferences to select the bootable installer as the startup disk, then start up from it. Why cant i boot to disk utility imac a1418 ask different. How to make a bootable lion install disc or drive macworld. You can start up from macos recovery and use its utilities to recover from certain software issues or take other actions on your mac. Aio boot is a tool that can help you create a bootable usb with grub2, grub4dos, syslinux, clover and refind. Fortunately, there is a builtin utility on your mac called first aid is able to check and repair such minor file system errors. Saves you from having to download a full mac os x installation. The thirdparty utilities, by contrast, ship on bootable dvdsexcept that they cant boot the newest mac models not even if you use an external superdrive, for mac models that lack an internal one. Additional utilities are available from the utilities menu in the menu bar. Techtool pros edrive is the sole exception here, behaving much like os.
Starting with os x lion, apple did away with dvds and other media as a method of installing software and switched to a download model instead. My first experience with burning a dmg file to dvd was actually on windows. You need to find the volume you created using the mac s disk utility. Is there another mac disk repair utility youd suggest. This will launch apples startup manager which shows bootable devices connected to the machine. Paragon hard disk manager for mac was primarily designed to rearrange space between macintosh hd and boot camp. If you want to use your usb stick with an apple mac, you will need to restart or poweron the mac with the usb stick inserted while the optionalt. To use the default boot image on the server, hold down optionn instead. Redowload os x lion, open disk utility, locate installesd. In order for this to work you should have a usb flash drive. When you cant boot up your mac unit because of os xrelated errors, your only hope is the disk utility tool. So you can try to fix the unmountable mac internal hard drive with disk utility in recovery mode. How to reformat mac os x without a recovery disc or drive. Disk drill 3 is now capable of creating your own bootable mac os x usb drives for data recovery.
How to make a bootable macos installer on an external. Repair unmountable mac internal hard drive via first aid. In some cases, a disk is unmountable and greyed out in disk utility because some minor disk errors are stopping your mac reading this drive. How to install macos or os x on a new hard drive for your mac. Making bootable usb of mac os x with disk utility youtube. Today i am showing how to make a boot able usb drive for mac using a. A macos installation package with dmg extension enables creating bootable installer dvds.
Please leave a comment to help others, or if the above tools have helped you. This tutorial will help you create a bootable usb flash drive for your mac on a windows computer. So in order to repair your startup disk, youll need to create a separate boot volume with the disk utility installed. Excellent mac disk repair software is provided above, for you to consider and try if you like. Lion may be the first release of the mac os to be delivered as a digital download. Aio boot can boot windows and most linux distributions and boot via lan using tiny pxe server. Burn a dmg or iso file to disk macintosh umass amherst. This will allow you to make sure your mac starts up from a trusted startup disk. How to use os x boot options to troubleshoot your mac. That means, it is possible to mount a dmg file on a virtual disk or write it to a dvd and access its contents. Open disk utility on your mac located in the utilities folder and find the burn option.
Sep 06, 2019 how do i use disk utility to reformat my hard drive. How to make a bootable install disk of mac os x lion. We also boast an active community focused on purchasing decisions and technical aspects of the iphone, ipod, ipad, and mac platforms. Start up from a netboot server, if your mac supports network startup volumes. Chances are, the mac with the disk, where the data was lost, will be able to start from the boot drive created. Note that some items are grayed out because they are not applicable to the disk i have highlighted in the left pane of the disk utility window. How to boot into disk utility without install disk.
Itll boot into recovery mode, and you can click disk utility to open it up. Startup security utility or firmware password utility, network utility, and terminal. The version and features of disk utility depend on the version of mac os x. How do i use disk utility to reformat my hard drive. Aio boot is constructed from a variety of sources, certainly still a lot of flaws, eager for sympathy. Jul 18, 2011 lion may be the first release of the mac os to be delivered as a digital download. Boot to recovery mode by restarting the mac computer while pressing and holding down command and r keys at startup.
How to make a bootable disk or usb drive of os x mountain lion. Sep 14, 2015 how to start up your mac from an external usb storage device if your usb thumb drive, usbbased external disk or flash storage contains a usable operating system or an os x installer, you can select it at boot time using os xs builtin feature called startup manager, which can be invoked via a simple keystroke. This would make it much easier to reinstall lion in the event that your hard drive fails. Bootable disk is created from your own mac so you know its legitimate. How do you get mac lion roaring again without access to the mac app store.
Restore failure, recovery partition restores can only be done on gpt partition maps. Has a simple, user friendly interface that allows anyone to create a usb boot. To pick a disk to start your mac from while its booting, follow these simple steps for using macos builtin feature called startup manager, which can be invoked via a simple keystroke. Any bootable macos x disc will do, as long as that disc can boot the computer discs older then the computer will not work, newer will. Panthers disk utility and creating mac os 9 booting volumes. Because the device names are different, use the size and format of the volume you created. Jul 31, 2011 the steps above can also be used to create a bootable mac os x lion usb by using the installesd.
In recovery mode, macos runs a special sort of recovery environment. Jul 25, 2012 inside the mountain lion installation tool, you can open disk utility and erase your macs hard drive. From the erase tab, choose mac os extended journaled and wipe your drive. Boot into disk utility without install cd macrumors forums. Has a simple, user friendly interface that allows anyone to.
774 475 807 1552 574 1468 1574 315 1550 920 1017 236 1650 397 682 547 460 39 1488 465 514 1675 1494 583 1210 1092 871 283 1638 474 149 412 633 1368 1634 1222 301 1287 1543 1110 46 1458 469 586 30 596 41