HDD protection

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Does windows have HDD protection from power sypply missing? I mean will there
any problem/errors on hdd if happens that power supply was switched out
unexpected?
 
Most newer hardrives will automaticaly park the heads if the power is
interupted. If the write behind cache is enabled (or is it disabled) you
could loose some data that was recently writen to the drive. Also there
could be a small spike causing some data coruption but this is usually
fixable with a chkdsk. In essence the hardrive should be able to adress the
more dangerous issues without XP needing to interact. With the hardrive
automaticaly parking the heads, there is little to worry about in the
severity of a power loss compared to years ago. I have seen data coruption
after a power loss that stops XP from booting though.
 
It seems, when the power supply failure happened(my mistake), there was 3
applications open: Internet Explorer, Outlook, Windows Media Player, plus
Antivirus software. I did not see was there hard disk drive LED 'on' at this
time there or not. I hope that LED was 'off'.

Should I run chkdsk or chkdsk /f ? What is difference?

I tried ScanDisk for Error Checking(with option 'scan for and attempt
recovery of bad sector' selected) then run eventvwr.exe and try view
Application logs, but found no any info concerning error checking report. I
would know was there any errors on hdd or not, all is OK.
 
If you aren't finding any problems that there probaBly isn't any. All 3 of
those programs yopu listed write to temp areas if they even write to the
drive all all.

You can run chkdsk if it will calm your mind. I don't think it is neccesary
but it shouldn't hurt anything. The difference in chkdsk and chkdsk /f is
that chkdesk will check for problems before going deaper and running an
actual scan. the /f force the later part to run even when the regular
proccess didn't turn anyhting up as being wrong.

Most newer hardrives (newer being a rteletive term to when they started
using lba mode) will run a little program on itself and the computer
actually access this program. The cache on the drive can hold as much as the
actual size of the cache itself minus the amount held for read data. If i
remeber corectly, with an 8meg cache around 2 megs (roughly opn quarter of
the cache can be used for write data) can be waiting to be writen. when the
power loss ocures this is were you are going to get a problem. It used to be
that the hardrive heads would remian on the disk platter and without the
disk spinning that section could become unreadable. With the heads
automaticaly parking (going back to a place of rest that doesn't touch the
platters) itself that isn't an issue anymore.

In some of the newer recently made drives i have noticed the cache doesn't
erase durring short power outages and is capable of finishing the flush when
poer is restored. I'm not sure how this is acomplished outside of a
capacitor or bater refreshing the cachmemory ever so often. i'm not a
hardrive expert by any means either. I have however done enough hacking with
them to be confident enough to say what io have said. Something tells me
though, you didn't do any damage with your power outage and the fact you
were running WMP and IEXPLRER probably flushed any important data waiting to
be writen off the cache of the drive. If you want to run chkdsk, it isn't
neccesary other then to ease your mind a bit. use the /f switch so it looks
like it is doing more when it doesn't fix anything. good luck with it.
 
Thank you, this help.

Breeze

jazz said:
If you aren't finding any problems that there probaBly isn't any. All 3 of
those programs yopu listed write to temp areas if they even write to the
drive all all.

You can run chkdsk if it will calm your mind. I don't think it is neccesary
but it shouldn't hurt anything. The difference in chkdsk and chkdsk /f is
that chkdesk will check for problems before going deaper and running an
actual scan. the /f force the later part to run even when the regular
proccess didn't turn anyhting up as being wrong.

Most newer hardrives (newer being a rteletive term to when they started
using lba mode) will run a little program on itself and the computer
actually access this program. The cache on the drive can hold as much as the
actual size of the cache itself minus the amount held for read data. If i
remeber corectly, with an 8meg cache around 2 megs (roughly opn quarter of
the cache can be used for write data) can be waiting to be writen. when the
power loss ocures this is were you are going to get a problem. It used to be
that the hardrive heads would remian on the disk platter and without the
disk spinning that section could become unreadable. With the heads
automaticaly parking (going back to a place of rest that doesn't touch the
platters) itself that isn't an issue anymore.

In some of the newer recently made drives i have noticed the cache doesn't
erase durring short power outages and is capable of finishing the flush when
poer is restored. I'm not sure how this is acomplished outside of a
capacitor or bater refreshing the cachmemory ever so often. i'm not a
hardrive expert by any means either. I have however done enough hacking with
them to be confident enough to say what io have said. Something tells me
though, you didn't do any damage with your power outage and the fact you
were running WMP and IEXPLRER probably flushed any important data waiting to
be writen off the cache of the drive. If you want to run chkdsk, it isn't
neccesary other then to ease your mind a bit. use the /f switch so it looks
like it is doing more when it doesn't fix anything. good luck with it.
Click to expand...
 
Back
Top