Mac OS X uses a Utility called Keychain Access, which can store passwords, link other accounts to be unlocked automatically when a particular keychain is unlocked, etc. Symantec Drive Encryption (formerly known as PGP Whole Disk Encryption) also uses the Keychain Access utility for Enrollment of the Symantec Drive Encryption client to the Symantec Encryption Management server (SEMS - formerly known as PGP Universal Server). The entries Symantec Encryption Desktop creates in Keychain are listed as 'PGP Passphrase', 'PGP LDAP' and 'PGP Universal Auth Cookie'. The 'PGP Passphrase' entry will be associated to the user who enrolled to SEMS. Each of these entries are protected with a password that can only be unlocked if the current keychain password is known. Multiple entries may also exist if multiple users have enrolled on the system. It is possible older entries for the same user may exist in which the passphrase may no longer be known.

With Symantec Drive Encryption 10.2.1, if there were any pre-existing PGP entries in Keychain Access, in which the password for those particular entries is currently not known, a Drive Encryption user can be added to the disk, and therefore no passphrase will be known to allow authentication to occur.

What happens during a normal encryption process with the above conditions is the user enters his/her LDAP credentials to enroll. The enrollment process configures a PGP Key, and then adds a user to the disk for Symantec Drive Encryption. A pop-up will appear to confirm the Drive Encryption passphrase matched what was just used, and if this matches, normal encryption will occur. If the passphrases do not match, then the window will not accept the passphrase. If the user then clicks 'cancel' to this pop-up window, and error 'PGPError #-1' occurs.

The end result is the user is left on the disk and no known passphrase is set for that user and there would be no way to authenticate the drive, or decrypt, unless a WDE Admin Passphrase was added to the disk. Also try using a Whole Disk Recovery Token to gain access to the system in this case.

After successfully created a macOS bootable USB, the next step is how to use it to install macOS from external USB drive. This is not normal case because macOS is very stable and have less bugs/virus than Windows PC. So many Mac users don't know how to perform a clean install of macOS on their Mac when the device was broken or could not boot into desktop.

Please don't worry. We will share detailed steps on how to install macOS/Mac OS X from an USB drive. Even you had issues during this process, it is not thing to be afriad as we have offered the troubleshooting guide as well.

Drive Around 2.1 Mac Os Update

• A mobile phone, cellular phone, cell phone, cellphone, handphone, or hand phone, sometimes shortened to simply mobile, cell or just phone, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
• 'The Mac OS X 10.2.1 Update solved the problem in correctly recognizing my Plextor PX-W8220T SCSI drive as a CD-RW device (no more as a simple read only CD-ROM drive).

MacOS (originally named 'Mac OS X' until 2012 and then 'OS X' until 2016) is the current Mac operating system that officially succeeded the classic Mac OS in 2001. Although the system was originally marketed as simply 'version 10' of Mac OS, it has a history that is largely independent of the classic Mac OS.

How to Install macOS on Mac from USB Drive (Normal Way)

If the target Mac computer already had a macOS or OS X on it, then installing macOS from USB is straightforward and this is called the normal way.

Step 1: Insert the macOS bootable USB drive on a USB port of Mac computer.

Step 2: Shut down the Mac and wait for 1-2 minutes. This will make sure the Mac is powered off.

Step 3: Hold the Power and Option key simultaneously for 15 seconds. This will bring up the Startup Manager on Mac.

Step 4: You will see all bootable devices attached to this Mac, including Macintosh HD and external USB or DVD. Click the drive name of your macOS bootable USB to start the installation process.

Step 5: Agree the terms and conditions and wait for the installation process to be done.

How to Install macOS on Mac from USB Drive (Advanced)

If the drive was not partitioned or the partition table was corrupted, then you can not install macOS on Mac with the normal way. You have to boot Mac into Recovery mode and format the hard drive or SSD to Apple file system first.

Step 1: Shut down your Mac and press the Power key to turn on the Mac; then immediately press Command and R keys.

Step 2: You will be directed to the macOS utility section and here you need to select 'Disk Utility' to format the USB drive. From the Disk Utility app, select Mac drive name under Internal section and then click on the 'Erase' button.

Step 3: You will get a couple of options from the Format. Pleasec choose APFS (macOS) or Mac OS Extended (Journaled) for old version Mac OS X.

Step 4: After the completion of the formatting process, go back to the macOS utility section and this time, select 'Reinstall macOS'.

Step 5: Further, go to the Startup Manager, move to the External drive section, and select your bootable macOS USB drive.

Step 6: Now, the configuration of MacOS will start. As soon as the process starts, it will provide Terms and Agreement page and your job is to agree with the same and then click on the continue button.

Mac Os Drive Icons

Step 7: After that, click on the 'Continue' button to start the installation process. This will take 30-45 minutes and once it gets completed, restart Mac.

Step 8: As you are using the fresh copy of MacOS on Mac machine, so you need to set up the OS and for that connect the Mac with the Wi-Fi and then sign in with the Apple account.

Step 9: After signing in, you can access the several products of Apple such as iCloud, DropBox and many more.

Quick Troubleshooting Tips if You Got Stuck during MacOS Installation

Could not write installation information to disk

If you see the message like 'Could Not Write Installation Information to Disk' when you are trying to install the OS, it means, some important files are missing from the bootable USB device. Mostly, this error happens when you download Mac OS file from an unauthorized site.

You can fix this issue just by downloading the original OS file from the Apple store and then create a fresh bootable USB using the same.

Compatibility error

If you are upgrading the OS X after having an older version, you can get the compatibility error message. In such case, just cross-check the system requirement for the OS you want to install on your Mac system.

You can fix this issue just by downloading the original OS file from the Apple store and then create a fresh bootable USB using the same.

macOS could not be installed on your Computer

If you see the error message similar to 'macOS Could Not Be Installed on Your Computer' that means, either your system is not compatible or the Date and Time settings in your system is not up to date..

To resolve the problem, first, check the system combability for the OS X. If it's fine and still you are facing the error, then just update the system Time & Date with the option of 'Local Apple time server'.

Application is damaged, can't be used to install macOS

You the message 'application is damaged, can't be used to install macOS' appear on your screen, it means the OS certificated has been expired. And so, you won't be able to proceed further for installation.

The simple solution is; you need to create a fresh bootable USB by downloading the MacOS file from its official website.

MacOS couldn't install on this computer

Sometimes, the thirty-party tool which you use to create a bootable USB is the culprit. If the OS files will not be copied successfully using the bootable tool, then you may see the message like 'MacOS couldn't install on this computer'.

In this case, you should avoid using a third party bootable tool despite you should create a bootable USB with the help of command.

Google Drive Mac Os

Conclusion

Drive Around 2.1 Mac Os Catalina

The above tutorial covers most of the issues you could come across during the installation process. If you had other issues not mentioned in this article, please contact us and our technical team will help you fix it.