What is MIME type "application/vnd.efi.iso"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

application/vnd.efi.iso is a MIME type for optical disc image files.
It labels files that hold a complete copy of a disc’s data. These images often include the boot sector, file system, and other areas needed for a disc to work properly.
They are used for creating bootable media and for distributing complete software packages that need to mirror the original disc structure.
Key points:

Main Use: Creating and distributing bootable and installation media.
Technical Detail: It ensures the storing of all disc components, including boot instructions and data structure.
Other Uses: Backup archives, virtual drive mounting, and disc replication.

This MIME type supports files like ISO and IMG, which are common for disc images.
The vnd.efi part indicates it is a vendor-specific format tailored for these types of files. For more technical details, refer to resources such as the IANA Media Types page.

Associated file extensions

.iso, .img

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: application/vnd.efi.iso

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="application/vnd.efi.iso">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');
    
    http.createServer((req, res) => {
      res.setHeader('Content-Type', 'application/vnd.efi.iso');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.iso, .img

FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.