I recently bought a Lenovo ThinkPad T61P (model 6460-d8g, to be exact). It came with a Hitachi 7K200 160GB hard drive and had Windows Vista Ultimate 32bit preinstalled.
Having installed all my necessary software (e.g. Office etc.) on it, I just happened to run chkdsk /r (or was it chkdsk /f, I can't remember). It found one bad sector. Well, I phoned Lenovo support and the hard disk was replaced. So far so good.
Now, I have installed Vista again (and please note, using Vista restore dvd's provided by Lenovo, NOT the actual Vista installation dvd as I don't have one - should this make any difference), and just out of curiosity, I decided to run the chkdsk again. Quess what, it reported ONE sector as a bad again!
After that I ...
... tried to check the drive with the latest version of Speedfan, but it didn't recognize the drive in either AHCI mode or Compatibility mode (BIOS setting).
... checked the whole drive with Hitachi's own Drive Fitness Test software (latest version). It reported no problems.
... checked the drive with the latest HD Tune Pro edition. It recognized the drive in compatibility mode and reported no problems either.
... checked the drive with Lenovos (?) PC-Doctor 5 (drive in AHCI mode this time), no problems reported there either.
... checked the drive with the Harddisk Diagnostics option in the BIOS settings of this notebook - no problems found.
So I quess my question is: what the heck is going on in here?!
* What could cause Vista's chkdsk to report a bad sector on the disk, when no other diagnostic software notices this?!?
* What do you think - should I believe Vista chkdsk and replace the drive AGAIN or would it be safe to believe all those other diagnostics over the chkdsk's report?
* What other known-to-be-good (-and-free ) diagnostic software could I use to verify the existence of a bad sector?
* Has anyone ever experienced anything similar...?