[Bug 31072] Re: Hard drive BuffSize=0kB

[dino99]

The most important setting difference :

-i
    Display the identification info which the kernel drivers (IDE, libata) have stored from boot/configuration time. This may differ from the current information obtainable directly from the drive itself with the -I flag. The data returned may or may not be current, depending on activity since booting the system. For a more detailed interpretation of the identification info, refer to AT Attachment Interface for Disk Drives, ANSI ASC X3T9.2 working draft, revision 4a, April 19/93, and later editions. 
-I
    Request identification info directly from the drive, which is displayed in a new expanded format with considerably more detail than with the older -i flag. 

http://linux.die.net/man/8/hdparm

So considering this report as "invalid"

** Changed in: hdparm (Ubuntu)
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/31072

Title:
  Hard drive BuffSize=0kB

Status in “hdparm” package in Ubuntu:
  Invalid

Bug description:
  [nicolas at casimir:~] $ sudo hdparm -i /dev/hda

  /dev/hda:

   Model=TOSHIBA MK8026GAX, FwRev=PA001G, SerialNo=35DO2167T
   Config={ Fixed }
   RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=48
   BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=off
   CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
   IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
   PIO modes:  pio0 pio1 pio2 pio3 pio4
   DMA modes:  sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
   UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
   AdvancedPM=yes: unknown setting WriteCache=enabled
   Drive conforms to: device does not report version:

   * signifies the current active mode

  
  But the cache of this disk are 8Mo

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