Reinstall from macOS Recovery
macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.
1. Start up from macOS Recovery
If you are looking for a free full version Mac data recovery software to recover data under Mac OS X, macOS or Mac Server, you have come to the right place. In this article, we will recommend you the best free full version Mac data recovery software and guide you step by step to restore Mac files on Mac hard drive or removable device. Mac Data Recovery until recently. Deleted file recovery used to be done by reading the filesystem of the disk. If it were a Mac OS disk for example, then the HFS+ filesystem would be interpreted by the software, and an analysis would be made to try to determine what. Stellar Data Recovery's Mac offering is available to download for free to allow you to try out the software and preview the lost files it can recover before you decide to buy.
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
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- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
- If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
- If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
Os X File Recovery
The version of macOS offered by macOS Recovery might vary in some cases:
- If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
- If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
- If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
- If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
- You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
- Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.
Summary: In this blog, we will help you repair video and photo files corruption on Mac with the help of a powerful software.
Stellar Data Recovery Premium for Mac is the world's first software application with data recovery and repair capabilities. The software is macOS Catalina compatible.
Click on the below button to get your free trial now.
Digital file corruption on Mac signifies unintended changes of bits (0s & 1s) that a file is composed of thereby damaging its integrity. The alteration of bits can occur in the header or the main content of a video or picture file. In case one or more bits changes in the header data, the file may not open or throw an error message. If some bits modify in the main content, the file may have imperfection after opening or may even turn garbled.
The below infographic summaries the common reasons for a file corruption on macOS.
5 Reasons for Digital File Corruption
1. Power failure during the data writing/transferring process
Free File Recovery Mac Os
Fix: Plug the power cable to your MacBook when its battery level is low. While transferring data, always copy the file from the source and paste it to the destination to prevent file corruption.
2. Defect or bug in the application that opens the file
Fix: Keep you macOS Mojave up to date. Update all the native and 3rd party applications that are installed on your macOS. Updates fix the bug or defect present in any apps that can corrupt your audio, video or photos.
3. A malware infection can corrupt digital files
Fix: Scan your Mac by using anti-malware software. Scanning will help you determine potential threats and remove a malware that your storage drive may be infected with.
Recover Files On Mac
4. Bad sectors on the storage drive
Fix: Run Disk Utility's First Aid to fix minor logical issues with the storage drive.
5. Corruption during file conversion/processing
Fix: Create a redundant copy of the file and use the duplicate file while converting from one form to another or processing it. Working with the duplicate saves the original file from corruption.
How to Repair Corrupt Digital Files on Mac?
Method 1: Use a Mac Hex Editor
Open a copy of the corrupt file and a perfect file of the same kind in a Mac Hex Editor, such as iHex or Hex Fiend. Compare the header data of both the files. In case, you could detect the hex character changes in the corrupt file, edit the hex data and save it. The rectified file may normally open if the corruption is minor and detectable. The process needs to be repeated for all the corrupt files, which is tedious.
Method 2: Use a Premium Repair Software for Mac
Repair your corrupt digital data such as photos or videos by using a premium repair tool. Instead of employing different software, use the versatile D-I-Y tool Stellar Data Recovery Premium for Mac that offers two repair functionality—Repair Photo and Repair Video.
Word File Recovery For Mac
Steps to repair corrupt Photos or Videos are as follows:
Step 1) Download the *trial version of Stellar Data Recovery Premium for Mac.
Install the software on your Mac then double click its icon to launch it. Select the desired repair option (You need to select a RepairPhoto for photo repair).
Step 2) Click AddFile to add multiple corrupt photos to the StellarRepair for Photo module. Click Repair and let the software finish the repair process.
Step 3) Repair process will complete shortly. When an image is severely corrupted, click the Advancerepair link to provide the sample files for repairing.
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
How to install apk file Description ScreenshotsTo see the full description of Bait Bazi, please.Download Bait Bazi apk for PC/Mac/Windows 7,8,10Choilieng.com helps you to install any apps/games available on Google Play Store. Accept softwares installed from external sources (Settings - Apps - Unknown sources selected area)2. Type name of your desired app (or Google Play store URL of the app) in search box and follow instruction steps to download apk files.Steps to download Android apps/games for phoneTo download and install applications or games from our website to your smartphone:1. You can download apk files for your phones and tablets (Samsung, Sony, HTC, LG, Blackberry, Nokia, Windows Phone and other brands such as Oppo, Xiaomi, HKphone, Skye, Huawei) right on choilieng.com. Bazi for mac. You can download apps/games to PC desktop with Windows 7,8,10 OS, Mac OS, Chrome OS or even Ubuntu OS.
- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
- If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
- If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
Os X File Recovery
The version of macOS offered by macOS Recovery might vary in some cases:
- If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
- If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
- If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
- If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
- You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
- Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.
Summary: In this blog, we will help you repair video and photo files corruption on Mac with the help of a powerful software.
Stellar Data Recovery Premium for Mac is the world's first software application with data recovery and repair capabilities. The software is macOS Catalina compatible.
Click on the below button to get your free trial now.
Digital file corruption on Mac signifies unintended changes of bits (0s & 1s) that a file is composed of thereby damaging its integrity. The alteration of bits can occur in the header or the main content of a video or picture file. In case one or more bits changes in the header data, the file may not open or throw an error message. If some bits modify in the main content, the file may have imperfection after opening or may even turn garbled.
The below infographic summaries the common reasons for a file corruption on macOS.
5 Reasons for Digital File Corruption
1. Power failure during the data writing/transferring process
Free File Recovery Mac Os
Fix: Plug the power cable to your MacBook when its battery level is low. While transferring data, always copy the file from the source and paste it to the destination to prevent file corruption.
2. Defect or bug in the application that opens the file
Fix: Keep you macOS Mojave up to date. Update all the native and 3rd party applications that are installed on your macOS. Updates fix the bug or defect present in any apps that can corrupt your audio, video or photos.
3. A malware infection can corrupt digital files
Fix: Scan your Mac by using anti-malware software. Scanning will help you determine potential threats and remove a malware that your storage drive may be infected with.
Recover Files On Mac
4. Bad sectors on the storage drive
Fix: Run Disk Utility's First Aid to fix minor logical issues with the storage drive.
5. Corruption during file conversion/processing
Fix: Create a redundant copy of the file and use the duplicate file while converting from one form to another or processing it. Working with the duplicate saves the original file from corruption.
How to Repair Corrupt Digital Files on Mac?
Method 1: Use a Mac Hex Editor
Open a copy of the corrupt file and a perfect file of the same kind in a Mac Hex Editor, such as iHex or Hex Fiend. Compare the header data of both the files. In case, you could detect the hex character changes in the corrupt file, edit the hex data and save it. The rectified file may normally open if the corruption is minor and detectable. The process needs to be repeated for all the corrupt files, which is tedious.
Method 2: Use a Premium Repair Software for Mac
Repair your corrupt digital data such as photos or videos by using a premium repair tool. Instead of employing different software, use the versatile D-I-Y tool Stellar Data Recovery Premium for Mac that offers two repair functionality—Repair Photo and Repair Video.
Word File Recovery For Mac
Steps to repair corrupt Photos or Videos are as follows:
Step 1) Download the *trial version of Stellar Data Recovery Premium for Mac.
Install the software on your Mac then double click its icon to launch it. Select the desired repair option (You need to select a RepairPhoto for photo repair).
Step 2) Click AddFile to add multiple corrupt photos to the StellarRepair for Photo module. Click Repair and let the software finish the repair process.
Step 3) Repair process will complete shortly. When an image is severely corrupted, click the Advancerepair link to provide the sample files for repairing.
Step 4) Post the repair task, click any repaired file to preview.
Step 6) Click SaveRepairedFiles to save them to a secure location of your choice. On the Saving Complete message box, follow the Click here link to open containing folder.
The *Trial version of the software needs to be activated to save the recovered files.
Similarly, go to RepairVideo and perform the exact steps to repair the corruption of the videos.
Read: How to Activate Stellar Data Recovery Premium for Mac
Conclusion
The blog briefed about file corruption, common reasons together with associated fixes to prevent file corruption and methods to repair corrupt files on macOS Mojave.
Advanced users can make use of a Mac hex editor to discover any changes in the header of a corrupt file and try fixing it. This manual method needs to be performed for all the corrupt files one by one. If the hex method seems unwieldy, use a Mac data repair software to repair multiple corrupt files at one go.
Stellar Data Recovery Premium is a perfect amalgamation of undelete software for Mac and Digital File Repair utility. This Repair and Recover utility allows you to repair damages done to the video and photo files while helping in the recovery of files from a storage drive.
The overall functioning of Stellar Data Recovery Premium software is simple. Even the GUI of the software is user-friendly. The main interface includes a handful of menu options with which you can overview the software settings and activate the utility.
