UltraISO - ISO Image Tool
UltraISO is an ISO image tool by EZB Systems that creates, edits, converts, and burns disc image files. The free trial limits you to ISO files under 300 MB. The full paid version removes that limit. UltraISO has been around since 2002 and is still maintained.
It runs on Windows only.
Bootable USB creation
The most common use for UltraISO is making bootable USB drives. Open an ISO file (like a Windows or Linux installer), go to Bootable > Write Disk Image, select your USB drive, choose USB-HDD as the write method, and hit Write. This is how many people create installation media without burning a disc.
ISO editing and conversion
You can open an ISO file and modify its contents directly - add, remove, or replace files - then save. This is useful for customizing installation discs. UltraISO also converts between image formats: BIN, NRG (Nero), MDF (Alcohol 120%), and others can be converted to standard ISO. A virtual drive feature (Tools > Virtual Drive) lets you mount ISO files as if they were physical discs.
Advantages
- Reliable bootable USB creation for Windows and Linux installers
- Edits ISO contents without unpacking and repacking
- Converts between many disc image formats
- Virtual drive mounting
Drawbacks
- Free trial limited to 300 MB ISOs, which rules out most use cases
- Rufus creates bootable USB drives for free and is simpler
- Windows can mount ISO files natively since Windows 8
- The interface looks dated
Who it is for
UltraISO is useful if you regularly edit ISO files or convert between disc image formats. For just making bootable USB drives, Rufus is free and easier. For mounting ISOs, Windows does that natively by double clicking. UltraISO's niche is the ability to open and modify ISO contents, which few other tools do well.
Frequently Asked Questions
Is UltraISO free?
How do I make a bootable USB with UltraISO?
What are free alternatives to UltraISO?
Features & How-To Guide
| # | Feature | How to use |
|---|---|---|
| 1 | Bootable USB drive creation | File › Open ISO › Bootable › Write Disk Image › Select USB › USB-HDD › Write. |
| 2 | ISO file content editing | File › Open ISO › Drag files to add › Select and Delete to remove › Save. |
| 3 | ISO file from files and folders | File › New › Add files/folders by dragging › Save As › ISO format. |
| 4 | Disc copying to hard drive | File › Open (BIN/NRG/MDF/CCD/IMG) › Save As › Format ISO. |
| 5 | Burning ISO image to CD/DVD | File › Open ISO › Tools › Burn CD/DVD › Select burner and speed › Burn. |
| 6 | Unpacking files from ISO image | File › Open ISO › Select files › Extract › Choose a destination folder on disk. |
| 7 | Mounting ISO as virtual drive | Tools › Virtual Drive › Mount ISO file › Assign a drive letter › Access like a real disc. |
| 8 | Bootable disc creation 2 | File › New/Open › Tools › Make Bootable CD › Configure boot image › Burn. |
Related software categories
Similar Programs
Questions & Answers
Ask a Question
Our team and community are happy to help
No questions yet. Be the first to ask!