Erasing your disk: For most reasons to erase, including when reformatting a disk or selling, giving away, or trading in your Mac, you should erase your entire disk.
Jul 02, 2020 Then select Disk Utility from the Utilities window and click Continue. If you're not erasing the volume your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder. In the sidebar of Disk Utility, select the volume that you want to erase. May 14, 2019 To Repair Disk, here are the steps: Restart your Mac and hold down Command + R keys to launch the inbuilt Disk Utility. You will see a list at the left of the utility window that opens. Select your Mac in it. Select ‘Repair Disk’ located to the right of ‘Repair Disk Permissions’.
Erasing a volume on your disk: In other cases, such as when your disk contains multiple volumes (or partitions) and you don't want to erase them all, you can erase specific volumes on the disk.
Erasing a disk or volume permanently deletes all of its files. Before continuing, make sure that you have a backup of any files that you want to keep.
Free Mac Disk UtilityHow to erase your disk
How to erase a volume on your disk
Reasons to erase
You can erase at any time, including in circumstances such as these:
About APFS and Mac OS Extended
Disk Utility in macOS High Sierra or later can erase using either the newer APFS (Apple File System) format or the older Mac OS Extended format, and it automatically chooses a compatible format for you.
How to choose between APFS and Mac OS Extended
Disk Utility tries to detect the type of storage and show the appropriate format in the Format menu. If it can't, it chooses Mac OS Extended, which works with all versions of macOS. If you want to change the format, answer these questions:
![]() How to identify the format currently in use
If you want to know which format is currently in use, use any of these methods:
If your disk or volume doesn't appear, or the erase fails
Learn more
Creating a bootable USB drive of OS X Yosemite 10.10 if you want to save it on a external drive for future usage or just want to install it on multiple Mac computers. To make OS X Yosemite bootable USB installer drive, there are few requirements. Lets see what are those.
Note: This guide to make installer USB drive is for OS X Yosemite Developer Preview
Oct 02, 2016 Question: Q: macOS Sierra always prompts for credentials for network drives. At home we have several Macs that mount, on login, some SMB network drives from various servers (OS X Server and Synology NAS). It reappears more than once each time i boot into Sierra. Regardless of AFP or SMB protocol used to connect to it. Oct 25, 2016 Unfortunately, macOS Sierra - SMB is the default and logins require sign in every time regardless if it's saved in Keychain. I'm not sure about AFP logins. You might try AFP only and turn off SMB to see if that works for you. Although, for your NAS, it may require SMB. I believe what's happening is that macOS needs access to the private key of the client certificate that EAP TLS is requesting. As has been suggested, find the client certificate in Keychain Access (if the prompt you get states that it is trying to access the 'System' keychain, then search in the System keychain). Macos afp asks for administrator credentials repeatedly interview. Office 365 keeps prompting for login credentials within Mac OSX? I came across a problem where a client of mine had bought and installed Office Suite 2016 she than upgraded to Office 365 Business Premium. Browse other questions tagged macos keychain office-365. OS X is repeatedly asking for login keychain password. How to find an.
Best Disk Utility For Mac Yosemite 2017
See also: Dual Boot OS X Yosemite and Mavericks
Advertisement
Make OS X Yosemite Bootable USB
Requirements
Prepare USB drive for OS X Yosemite
Open Disk Utility from “Applications” > “Utilities” or press “cmd+space” keys form keyboard to find “Disk Utility”.
Plug the external USB drive into Mac (make sure you save your stuff from it). Once you attached the USB drive, it will shown on the left panel of Disk Utility.
Select the drive and then do the following steps to create a single partition that is required to make USB installer drive for OS X Yosemite 10.10.
Click on “Partition Layout” drop-down menu and select “1 Partition” option from it.
Then enter the Partition information Name: ”osxyosemite”, Format: “Mac OS Extended (Journaled)”. Click the “Options” button to select the partition scheme, so select “GUID Partition Table” option and click OK button.
To complete the creating partition process hit the “Apply” button and then “Partition” button. This will take some time to format and making USB drive as a 1 partition. Once done, you will notice a new drive name will be displayed on the left side, the name that you given in the partition information. Now close the Disk Utility tool.
Show hidden files
Showing hidden files is required, because there are few hidden files in the OS X Yosemite installer package that you need to unhide first to write them on bootable USB drive.
Open Mac “Terminal” command line: press cmd+space keys and type Terminal in the spotlight, click the Terminal from search results or just open the Terminal from Applications > Utilities > Terminal.
Type the following two commands one by one:
defaults write com.apple.finder AppleShowAllFiles YES
Killall Finder
First command is going to show hidden files and the second one is to restart the Finder so we can see the instant effect of first command. Close the Terminal.
Best Disk Utility For Mac Yosemite Drive
Open Applications, here you will see your downloaded OS X Yosemite file “Install OS X 10.10”. Cmd+click on it to view the menu, select “Show Package Contents”.
Open “Contents” > “SharedSupport” folder and here you will see “InstallESD.dmg” file, double click to open the file and OS X may starts verifying this file so let the verification process finished.
After that you will see a folder with the following content in it, “BaseSystem.dmg” is the file that we need and it was hidden, so now you know that why we show the hidden files in above steps.
Open the Disk Utility again from “Applications” > “Utilities” > “Disk Utility” or by using Spotlight search.
Best Disk Utility For Mac Yosemite Download
Load the “BaseSystem.dmg” file into the Disk Utility, right-click on the file and choose “Open With” > “Disk Utility” option. After doing that open the Disk Utility and you will see the file “BaseSystem.dmg” is loaded in the Disk Utility on the left side.
Restore Disk Image
Now we are going to restore “BaseSystem.dmg” disk image on the USB drive.
Select your USB partition that we created in previous first steps, then click the Restore tab. Under Restore tab there are two fields, Source and Destination. Click and drag the “BaseSystem.dmg” to Source field and “osxyosemite” usb drive to Destination filed, see screenshot below to get more idea. When done hit the Restore button and you need to confirm “Are you sure you want to replace the content on USB drive with the content of disk image” so click the Erase button to confirm, after that you may need to enter the administrator password. Restoring disk image is time taking process so be patient.
Once the restoring disk image process is finished you will see a folder like this. Here, open the “System” > “Installation” folders and move the Packages file to trash.
Copy the “Packages” folder from the folder where the “BaseSystem.dmg” exist. and paste it into the Installation folder that you just opened in previous step.
Hide the system files again using this command
defaults write com.apple.finder AppleShowAllFiles NO
How to Boot from USB Drive
You must know the system requirements of OS X Yosemite before installing it, If your system to capable to run this OS X version 10.10 then Shutdown your Mac, plug the OS X Yosemite Bootable USB into Mac. Press the power button again to turn it On and then hold the Alt or Option key from keyboard, when you see this screen release the button. Double click on the USB drive to boot from it.
Congratulations! you successfully perform all steps to make bootable USB drive to install OS X Yosemite on more that one Mac computers without worried of downloading it on each computer separately, you will saved lot of bandwidth and time as well. Thanks for reading if you have any problem we are here to help you just write your problem below in comments box.
![]() Related ContentComments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |