This article describes how to check if a hard drive is an Advanced Format (AF) disk or legacy 512 native in computers with Windows 7 or Windows Server 2008 R2 installed.
1. Open a command prompt (Start > Run > cmd)
2. Enter the command:
fsutil fsinfo ntfsinfo <drive letter>:
3. In the output you will find the value for "Bytes Per Physical Sector", which can be one of the following:
512 - for Legacy 512 native drives
4096 - for Advanced Format (AF) drives
<Not Supported> - if the hardware or driver does not support the IOCTL_STORAGE_QUERY_PROPERTY control code
An update that improves the compatibility of Windows 7 and Windows Server 2008 R2 with Advanced Format Disks is available, see the following article.
Login to Subscribe
Please login to set up your subscription.
Get support for your product, with downloads, knowledge base articles, documentation, and more.
Maximize your product competency and validate technical knowledge to gain the most benefit from your IT investments.
Submit a suspected infected file to Symantec.
Report a suspected erroneous detection (false positive).
Set default language
Do you wish to save this as your future site?