> My notebooks' hard disk, a Hitachi Travelstar 80 GB starts to
> develop read errors.
Since you are using a modern disk, you should check your smart counters. I
know how to do it on NetBSD, and I believe the command is also available on
FreeBSD. First, you have to turn on the smart (S.M.A.R.T.) stuff on the
hard-disk.
Then you can poll the hard disk and have counters reported back to you with
precious information about errors :)
Here is what I get from atactl on NetBSD :
{/root}
[root][1] atactl wd0 smart status
SMART supported, SMART enabled
id value thresh crit collect reliability description raw
1 100 51 yes online positive Raw read error rate 0
3 100 25 yes online positive Spin-up time 2944
4 100 0 no online positive Start/stop count 453
5 253 10 yes online positive Reallocated sector count 0
7 253 0 no online positive Seek error rate 0
8 253 0 no offline positive Seek time performance 0
9 100 0 no online positive Power-on hours count 7010
10 253 0 no online positive Spin retry count 0
12 100 0 no online positive Device power cycle count 9
191 100 0 no online positive Gsense error rate 35
194 112 0 no online positive Temperature 42
195 100 0 no online positive Hardware ECC Recovered
1981492
196 253 0 no online positive Reallocated event count 0
197 253 0 no online positive Current pending sector 0
198 253 0 no offline positive Offline uncorrectable 0
199 200 0 no online positive Ultra DMA CRC error count 0
200 100 0 no online positive Write error rate 0
201 253 0 no online positive Soft read error rate 0
223 253 0 no online positive Load/unload retry count 0
225 100 0 no online positive Load/unload cycle count 5513
255 100 0 no online positive Unknown 0
So by checking your own counters, you might get hints from the hardware that
something is wrong there.
Then, there is a web page with tools from Hitachi (IBM) that allow you to
boot and check your disk :
http://www.hitachigst.com/hdd/support/download.htm
Which such tools, you can have access to some functions that are not
available from our beloved BSD like turning ON the "check the noise you do
and try to be quiet" option :)
The feature tool will let you do that :
Change the drive Automatic Acoustic Management settings to the:
* Lowest acoustic emanation setting (Quiet Seek Mode), or
* Maximum performance level (Normal Seek Mode).
I was using a disk like yours on my Thinkpad X30. I replaced it with a
Samsung which has the same kind of tools available and usually in the form
of bootable floppies.
Hope this will help !
--
unzip ; strip ; touch ; grep ; find ; finger ; mount ; fsck ; more ; yes ;
fsck ; umount ; sleep
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