CPIO File Extension

Programs that support CPIO files

• Windows ⁷
• Mac OS ²
• Linux ²

Windows

• Zipeg
• WinArchiver
• ZipZag
• IZArc
• PeaZip
• GnuWin32 CPIO
• 7-zip

Mac OS

• The Unarchiver
• Zipeg

Linux

• Unix
• GNU cpio

How to open a CPIO file?

If you are having trouble opening a CPIO file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

The most popular programs for working with CPIO files are Unix, Zipeg and GNU cpio. To install the current version of IZArc, go directly to the official Ivan Zahariev website. The universal package for all operating systems is available there.

After setup, the operating system should recognize CPIO files and link them with IZArc.

Setting IZArc as default CPIO viewer

Changing the default program in Windows

1. Right-click on your CPIO file and choose the "Open With" option. Then click "Choose another app" to continue the process;
2. Choose IZArc from the available applications listed in the pop-up window to set it as the default application to open your CPIO file;
3. Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.

Change the default app for a file type in Mac

1. Initiate a right click or use Control + left click on the desired CPIO file to open a menu where you can select various actions;
2. Select "Open in application" and click "Other";
3. Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
4. Choose "All Programs" within this menu and locate IZArc. Check the box next to "Always open in app" to set it as the default program.

Convert to and from CPIO

For difficult CPIO files, try converting them to formats like 008, DEB or similar formats to improve usability.

Please note that after converting a CPIO file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Convert CPIO to other file formats

• CPIO to 008
• CPIO to DEB

Tips and tricks to solve problems with CPIO files

CPIO files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.

How to edit a CPIO file?

To edit CPIO files, you need to install specialized software that allows you not only to open but also to modify compressed files. Online CPIO editors usually provide fewer features than software created specifically for Unix CPIO Archive.

Best CPIO editors in 2026

Based on your described criteria, here is a list of available CPIO editors.