How to check if an hard drive is Advanced Format (AF) disk in Windows 7 or Windows Server 2008 R2
|Article:TECH194586|||||Created: 2012-08-08|||||Updated: 2013-01-15|||||Article URL http://www.symantec.com/docs/TECH194586|
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:
3. In the output you will find the value for "Bytes Per Physical Sector", which can be one of the following:
- The hotfix from Microsoft KB982018 may be required.
- Support for Advanced Format disks relies on the disk reporting itself as having 4KB physical sectors, and relies on the Storage Driver reporting the physical sector size.
An update that improves the compatibility of Windows 7 and Windows Server 2008 R2 with Advanced Format Disks is available, see the following article.
Article URL http://www.symantec.com/docs/TECH194586