sfc scannow vs HD check for errors


What's the difference in terms of what they are and what they are used for? Without much understanding about their differences, I usually run both. And I really don't know what I accomplish by doing so. Is either enough? Or each one does things the other does not?

BTW...both scans give reports that I really do not understand. Can I safely delete SFC logs (CBS)?

My Computer

System One

  • Manufacturer/Model
    HP Pavilion dv7-1170us
    Intel(R) Core(TM)2Duo CPU T5800 @ 2.00GHz
    30F4 99.B6
    Graphics Card(s)
    NVIDIA GeForce 9600M GT
    Monitor(s) Displays
    Generic PnP Monitor on NVIDIA GeForce 9600M GT
    Screen Resolution
    1440 x 900
    Hard Drives
    1 2GB SODIMM DDR-2 800 Mhz Elpida
    2 2GB SODIMM DDR-2 800 MHz Elpida
    Synaptics PS/2 Port Touch Pad
    Microsoft eHome MCIR 109
    Internet Speed
    Broadband Wireless


Vista Guru
Gold Member
SFC checks for corruption of the Operating System (Vista) and may be able to fix the problem.
Chckdsk, looks for errors on the hard drive.
Chkdsk, should be part of your regualr maintenance. SFC, is used primarily to find the source of a problem and correct it.
Quote from one of our tutorials on chkdsk

This will show you how to use and run Check Disk or chkdsk at startup from within Vista, the command prompt, and the registry to check for corruption and possibly repair errors and bad sectors on the hard drive.

Opening statement in this fine tutorial explains SFC

Regular Maintenace for Vista and for Seven
To maintain your computer

10 Tips on How to Properly Maintain Your Computer

Steps that I did not notice on the guide include:

Running a scan disc before doing a defrag

Using Microsoft Security Essentials and Malwarebytes.

Making System Restore points, at least once a week

Makaing a system Image once a month (varies by user)

Not relying on your A/V common sense, should prevail. You know of many sites can cause a problem.

Do not use any reg cleaning or optimizing software.

Download and use Ccleaner about once every two months. Untick any registry entries.

If you follow these instructions, you will be trouble free for a long time to come.

Be sure to back up your hard drive about once a month (varies by user) and to keeep system restore points up to date.

Optimize Windows 7

My Computer

System One

  • Manufacturer/Model
    Dell XPS420
    6 gig
    Graphics Card(s)
    ATI Radeon HD3650 256 MB
    Sound Card
    Intergrated 7.1 Channel Audio
    Monitor(s) Displays
    Dell SP2009W 20 inch Flat Panel w Webcam
    Hard Drives
    640 gb
    Dell USB 4 button optical
    Dell USB
    Other Info
    DSL provided by ATT