How to cancel Linux hard drive formatting-LINUX-php.cn

How to cancel Linux hard disk formatting and code examples

Introduction:
When using the Linux operating system, sometimes we need to cancel the formatting operation of the hard disk. This article will tell you how to unformat a Linux hard drive and provide specific code examples.

1. What is hard disk formatting
Hard disk formatting refers to the operation of organizing and managing the data on the hard disk according to a specific format. In Linux systems, we usually use file systems to format hard drives. Common file systems include ext4, NTFS, etc.

2. How to cancel hard disk formatting
To cancel the hard disk formatting operation, we need to use some specific tools and commands. The following are several common methods:

Use the mkfs command
The mkfs command is used to create a file system. We can cancel hard disk formatting by changing parameters and options. The following is an example of a command to cancel the formatting of the ext4 file system:
```
mkfs.ext4 -T cancel /dev/sda1
```
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Among them, /dev/sda1 represents the hard disk to be canceled, and -T cancel means to cancel the formatting operation.
Use the dd command
The dd command can be used to copy files and data streams. We can use the dd command to cancel hard disk formatting. The following is an example of a command to cancel NTFS file system formatting:
```
dd if=/dev/zero of=/dev/sda1 bs=4096 count=1
```
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Among them, /dev/sda1 represents the hard disk to be cancelled, and the if parameter specifies the input file, the of parameter specifies the output file, the bs parameter specifies the size of each read and write, and the count parameter specifies the number of reads and writes.
Use parted tool
parted is a commonly used partitioning tool. We can use the parted tool to cancel hard disk formatting. The following is an example of a command to cancel the formatting of the FAT32 file system:
```
parted /dev/sda rm 1
```
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Among them, /dev/sda represents the hard disk to be unformatted, the rm command represents deleting the partition on the hard disk, and 1 represents the partition number to be deleted. .

Summary:
Cancellation of Linux hard disk formatting can be achieved by using the mkfs command, dd command and parted tool. Before canceling formatting, we need to confirm the type of hard disk and file system to be cancelled, and choose the appropriate method according to the specific situation. The sample code provided above is for reference only, please adjust and use it according to the actual situation.

Reference:

Official documentation of mkfs command: https://manpages.debian.org/unstable/e2fsprogs/mkfs.ext4.8.en.html
Official documentation for the dd command: https://manpages.debian.org/unstable/coreutils/dd.1.en.html
Official documentation for the parted tool: https://manpages.ubuntu. com/manpages/trusty/man8/parted.8.html

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