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Ariolic Disk Scanner
What it is
Ariolic Disk Scanner is a free Windows utility that checks supported disks for read errors that can signal drive degradation. It scans every sector in read-only mode, then shows bad clusters in an image and identifies files located on unreadable sectors. The program requires no installation, so it can be run from a flash drive or another disk. It supports all flavors of FAT and NTFS and can scan internal and external media visible in Windows, including USB sticks, Micro SD cards, CDs, and DVDs. Ariolic describes the checks as non-destructive because they are read-only. Disk Scanner is intended as an early warning for users whose drives show signs of failure; the scan does not guarantee that an underlying issue will be fixed. The product page links to a free download hosted on CNET. It does not perform read/write testing, according to the listed capabilities.
For and against
For
- Free Windows utility.
- Scans disk sectors in read-only mode.
- Lists files located on unreadable sectors.
- Works without installation.
- Supports internal and external media visible in Windows.
Against
- Windows only.
- Does not perform read/write testing.
- A scan cannot guarantee an underlying issue will be fixed.
The verdict
Disk Scanner offers a read-only way to spot bad clusters and locate files on unreadable sectors. Treat its results as an early warning rather than a repair or guarantee that a disk problem will be resolved.
Who it suits
It suits Windows users who want to check a disk for read errors, especially when a drive shows signs of failure. Its portable, no-install setup may suit users who want to run it from removable media.
Plans and prices
Disk Scanner
Freeware · Windows disk scanning utility
Read 4 Oct 2026 · ariolic.com
On the record
- Affected files
- After a scan, it lists files located on unreadable sectors.ariolic.com · read 4 Oct 2026
- Data safety
- Ariolic says all checks are read-only and do not harm the data.ariolic.com · read 4 Oct 2026
- Download
- The product page links to a free download hosted on CNET.ariolic.com · read 4 Oct 2026
- File systems
- It supports all flavors of FAT and the NTFS file system.ariolic.com · read 4 Oct 2026
- Intended users
- Ariolic describes the utility as a free, easy-to-use tool for users whose drives show signs of failure.ariolic.com · read 4 Oct 2026
- Limit
- Ariolic’s knowledge base says disk scanning can provide an early warning but does not guarantee fixing underlying issues.ariolic.com · read 4 Oct 2026
- Portable
- It requires no installation and can be run from a flash drive or another disk.ariolic.com · read 4 Oct 2026
- Purpose
- Disk Scanner checks hard disks for read errors that may signal drive degradation.ariolic.com · read 4 Oct 2026
- Scan method
- It scans disk clusters in read-only mode and displays bad clusters in an image.ariolic.com · read 4 Oct 2026
- Sector coverage
- It checks every sector on supported media for read errors.ariolic.com · read 4 Oct 2026
- Supported media
- It scans internal and external disks, including USB sticks, Micro SD cards, CDs, and DVDs.ariolic.com · read 4 Oct 2026
- Supported operating system
- The product page describes scanning disks visible in Windows, and Ariolic’s home page labels Disk Scanner as designed for Windows.ariolic.com · read 4 Oct 2026
