Was ist ISO? Vollständige Anleitung zum ISO-Format
Vollständiger Leitfaden zu ISO-Dateien - technische Details, Vor- und Nachteile, Anwendungsfälle und häufig gestellte Fragen
Zuletzt aktualisiert:
What is it?
ISO is a disk image file format that contains an exact, sector-by-sector copy of an optical disc such as a CD, DVD, or Blu-ray. The name comes from the ISO 9660 filesystem standard used on CD-ROMs, though ISO image files can also contain UDF (Universal Disk Format) filesystems used on DVDs and Blu-rays. ISO files capture everything on a disc: the complete filesystem, boot sectors, directory structures, file data, and all filesystem metadata.
ISO images are the standard format for distributing operating systems, large software packages, and bootable recovery media. Every major Linux distribution is distributed as an ISO file. Virtual machine software like VMware, VirtualBox, and Hyper-V can mount ISO files as virtual optical drives. Burning software like Rufus and balenaEtcher write ISO files to USB drives to create bootable installation media. Modern operating systems can mount ISO files as virtual drives without burning them.
Technical Specifications
Pros & Cons
Advantages
Captures everything on a disc including boot sectors, filesystem metadata, and all files exactly as they appear on the original disc.
Windows 8+, macOS, and Linux can mount ISO files as virtual drives natively without third-party software.
VMware, VirtualBox, and other hypervisors can use ISO files directly as virtual optical drives.
The standard for distributing OS installers and software that would otherwise require physical media.
Disadvantages
ISO files are the same size as the original disc content - a DVD ISO can be 4.7 GB, a Blu-ray ISO up to 50 GB.
ISO 9660 disc images are not compressed by default, unlike ZIP or 7Z archives.
Designed for optical disc emulation - not suitable as a general-purpose archive format for arbitrary file collections.
Creating bootable ISO files requires specialized tools that handle boot sector structures correctly.
When to Use It
Here are the most common situations where ISO is the right choice:
Betriebssysteminstallation
Download Linux, Windows, or other OS installer ISO files and write them to USB drives for clean installations.
Einrichtung virtueller Maschinen
Mount ISO files in VirtualBox, VMware, or Hyper-V to install operating systems in virtual machines.
Erhaltung der Datenträgerbibliothek
Create ISO backups of DVD or CD collections to preserve them without needing the physical discs.
Erstellung bootfähiger USBs
Use Rufus or balenaEtcher to write ISO files to USB drives for portable bootable installations.
How to open a ISO file
ISO files are disk images that contain the complete contents of a CD, DVD, or Blu-ray disc. Software for handling ISO files can be categorized into professional tools, free and open-source applications, browser-based solutions, and built-in utilities. Professional tools are suited for users needing advanced features, while free and open-source options cater to those with budget constraints. Browser-based tools offer convenience for quick tasks, and built-in utilities are ideal for basic operations without additional installations.
When choosing software for ISO files, key decision factors include feature fidelity, the need for editing versus viewing, cost models, and platform compatibility. Users should consider whether they need to modify the ISO or simply extract files, as some tools excel in one area over the other. Additionally, the ability to export to various formats may influence the choice, especially if converting the ISO is more beneficial than working directly with it.
WinRAR 6.21
WinRAR is a powerful archiving tool that can open ISO files alongside various compressed formats. It allows users to extract files from ISO images with high fidelity, making it suitable for accessing content without burning to a disc.
- Extract files from ISO images
- Create and manage archives
- Support for multi-volume archives
- Strong AES-256 encryption
- Repair damaged archives
- Robust extraction capabilities
- Supports multiple archive formats
- User-friendly interface
- Limited editing features for ISOs
- Paid software after trial period
Exportiert nach: ZIP, RAR, 7Z, TAR, GZ
Am besten für: Choose WinRAR if you need a reliable tool for extracting files from ISO images and managing various archive formats.
Besuchen WinRAR →PowerISO 8.0
PowerISO is a versatile tool designed specifically for handling ISO files, allowing users to create, edit, and convert ISO images. It provides a high level of fidelity when modifying ISO content, making it suitable for advanced users.
- Edit ISO files directly
- Create bootable USB drives
- Convert between ISO and other formats
- Support for large ISO files
- Mount ISO files as virtual drives
- Comprehensive editing capabilities
- Supports large file sizes
- User-friendly interface
- Paid software with limited trial
- Windows-focused, less support on macOS
Exportiert nach: BIN, DAA, NRG, UIF, IMG
Am besten für: PowerISO is ideal for users who need extensive editing capabilities for ISO files and prefer a dedicated solution.
Besuchen PowerISO →7-Zip 22.01
7-Zip is a free and open-source file archiver that can open ISO files for extraction. While it primarily focuses on compression, it provides reliable access to ISO contents without any cost.
- Extract files from ISO images
- Create compressed archives
- Strong AES-256 encryption
- Support for various archive formats
- Multi-threaded compression
- Completely free and open-source
- Lightweight and efficient
- Supports many formats
- No editing capabilities for ISOs
- Basic user interface
Exportiert nach: ZIP, GZ, TAR, WIM, 7Z
Am besten für: 7-Zip is perfect for users seeking a free tool to extract files from ISO images without needing advanced features.
Besuchen 7-Zip →UltraISO 9.7.6.3829
UltraISO is a dedicated ISO image management tool that allows users to create, edit, and convert ISO files. It offers high fidelity in editing and supports a wide range of image formats, making it versatile for various tasks.
- Edit ISO files with ease
- Create bootable CDs/DVDs
- Convert between ISO and other formats
- Mount ISO files as virtual drives
- Support for UDF and ISO9660 formats
- Extensive editing features
- Supports creating bootable media
- User-friendly interface
- Windows-only application
- Paid software with limited trial
Exportiert nach: BIN, CUE, NRG, IMG, DMG
Am besten für: UltraISO is recommended for users who require a comprehensive tool for creating and editing ISO files with a user-friendly experience.
Besuchen UltraISO →Convert ISO Files
Need to convert your ISO files? Use our free online converter.
Convert ISO Files