SMART viewers differ in the number of fields they can interpret (sometimes specific to the manufacturer, who may store two or three values in one field). Good software will show all fields reported by the drive as well as the raw value of each, which you can examine yourself. The Current/Worst/Threshold normalized values are interpreted and set by the drive, the raw values are interpreted by the program.
CrystalDiskInfo shows all atributes, and on standard drives the temperature is in the least significant byte. Software that always converts the raw to decimal can be less useful (in CDI you can choose the number format).
For quick checks I like to use the less thorough HDTune
, because it is quicker to load. CrystalDiskInfo won't work from MiniPE at all due to its heavy web-ish GUI.
If you can reboot the computer where the hard disk is connected to, you can also use HDAT2
from a boot CD / DOS to get the most information from the drive, as well as configure and test it if needed.Wikipedia
has the a table for standard attributes to help identify any Unknowns reported by your software.Read Error Rate attribute in Seagate drives
as researched by Fzabkar (sample of how to read custom fields). Some versions of HDAT2 can also do this and show the separate decimal values.Edit: Fixed hyperlink