"exception Emask 0x0" on harddisk

Alan Cox alan at lxorguk.ukuu.org.uk
Sat Jul 26 22:07:22 UTC 2008

On Sat, 26 Jul 2008 22:15:34 +0200
Huub <huubvanniekerk at gmail.com> wrote:

> Hi,
> My laptop running F9 doesn't boot properly anymore. After starting the 
> VolumeGroup, it starts giving:
> ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
> ata1.00: BMDMA stat 0x25
> ata1.00: status: { DRDY ERR }
> ata1.00: error: { UNC }
> ata1.00: cmd c8/00:2c:61:00:00/00:00:00:00:00/e0 tag 0
> repeatedly. Also Buffer I/O errors are given. Other posts suggest that 
> it may not be the harddisk, being a cosmetic error like hit Esc and go 
> on. Selecting a different kernel doesn't solve it, neither does hitting 
> Esc. Any suggestions? Laptop is out of warranty for a year now and never 
> had any problem like this one.

DRDY - Data ready (not really important here)
ERR - Error occurred
UNC - Uncorrectable (eg bad block)

And C8 is a read command (read via DMA)


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