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What are the common causes of raw disk partition and how to prevent them?

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A raw disk partition is a partition that has no recognizable file system, and therefore cannot be accessed by your operating system. This can cause data loss, corruption, or inaccessibility, and make you wonder how to recover partition from raw disk. In this article, you will learn what are the common causes of raw disk partition and how to prevent them, as well as some tips on how to restore your data.

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1 Hardware failure

One of the possible causes of raw disk partition is hardware failure, such as bad sectors, physical damage, or faulty cables. Hardware failure can affect the integrity of the partition table, the boot sector, or the file system, making the partition unreadable or unmountable. To prevent hardware failure, you should regularly check your disk health, backup your data, and replace any faulty or worn-out components.

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Sagar Navroop

Data Architect | AI | MLOps | AWS | SIEM | Observability | Technologist
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The most common causes of raw disk partitions include hardware failure, virus infections, power outages, and improper operations. To prevent these issues, employ RAID configurations for hardware redundancy, implement robust antivirus measures, use uninterruptible power supply (UPS) systems, and enforce strict operational protocols. In the event of a raw partition, employ specialized recovery tools such as TESTDISK for repairing the partition table or PHOTOREC for file recovery. Regularly back up critical data to minimize potential losses. Establish a comprehensive backup and recovery strategy to enhance fault tolerance, ensure data integrity and minimize the impact of unforeseen incidents.

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Omar Al Azzawi

System administrator| Cyber/Computer Forensics, Systems Management
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In my experience, I've seen many cases where hardware failure has resulted in raw disk partitions. For instance, I once had a hard drive that developed bad sectors, which made it impossible to access some of my files. Even after repairing the bad sectors, the hard drive continued to develop more bad sectors, eventually rendering the partition unreadable. I agree that regularly checking your disk health, backing up your data, and replacing faulty components are essential measures to prevent hardware failure. However, sometimes hardware failure can occur.

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2 Virus infection

Another possible cause of raw disk partition is virus infection, which can modify, delete, or encrypt your partition data, or corrupt your partition table, boot sector, or file system. Virus infection can also make your partition hidden, inaccessible, or formatted. To prevent virus infection, you should install and update a reliable antivirus software, scan your disk regularly, and avoid opening suspicious files or links.

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Omar Al Azzawi

System administrator| Cyber/Computer Forensics, Systems Management
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In my experience, virus infections can cause raw disk partitions. For instance, I once had a partition become inaccessible after a virus infection. Despite using recovery tools, I couldn't recover the partition until I removed the virus and repaired the partition table. I agree that preventive measures such as installing antivirus software, regularly scanning your disk, and avoiding suspicious files or links are essential to prevent virus infections. However, it's worth noting that some viruses can bypass antivirus software or exploit vulnerabilities in your system's security. Therefore, keeping your system and software up to date with the latest security patches and updates is crucial to prevent virus infections.

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3 Power outage

A sudden power outage can also cause raw disk partition, especially if it happens during a read or write operation, or a partition resizing or formatting process. Power outage can interrupt the data transfer, cause data corruption, or damage the partition structure, making the partition unrecognized or invalid. To prevent power outage, you should use a surge protector, an uninterruptible power supply (UPS), or a backup generator, and avoid performing disk operations during unstable power conditions.

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4 Improper operation

Sometimes, raw disk partition can be caused by improper operation, such as ejecting a removable disk without safely removing it, shutting down or restarting your computer abruptly, or using incompatible or unreliable disk tools. Improper operation can cause data loss, corruption, or inconsistency, or affect the partition table, boot sector, or file system, making the partition raw or unavailable. To prevent improper operation, you should follow the proper procedures and instructions, use compatible and reliable disk tools, and backup your data before making any changes.

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5 How to recover data

If you encounter a raw disk partition, don't panic. There are some ways to recover your data, such as using a data recovery software, repairing the partition table, boot sector, or file system, or cloning the disk to another one. However, before you attempt any recovery method, you should stop using the disk, avoid writing any new data to it, and consult a professional if possible. Data recovery can be risky and complex, and may cause further damage or data loss if done incorrectly.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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What are the common causes of raw disk partition and how to prevent them?

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1 Hardware failure

2 Virus infection

3 Power outage

4 Improper operation

5 How to recover data

6 Here’s what else to consider

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