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Re: chkdsk all partitions at once, including those without drive letters

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AndyHancock wrote
> Rod Speed <rod.speed....@gmail.com> wrote
>> AndyHancock wrote

>>> Franc, Rod,
>>> Thanks for that info on the effect of partition type on changability
>>> of drive letter and hazards of chkdsk changing the content.  Since
>>> this is a restoration from a clone, I can afford to take a chance. I
>>> was more concerned with breaking the functionality of partitions 3
>>> & 4 from changes that are caused by assigning and de-assigning drive
>>> letters. I'm not sure what are the possible changes that can result
>>> in, either within those partitions or outside of them. I vaguely
>>> seem to recall that some bookkeeping info about individual
>>> partitions are not stored in the partitions themselves -- some are
>>> stored in a "master" partition.

>> Thats really only true of bootable partitions.

>> Corse those recovery partitions are that, but its not very likely
>> that there will be any problem produced by changing the drive
>> type so the partition gets a letter, and as you say, its safe
>> enough with a clone where you can always just reclone.

> True dat. I perceived the problem as not knowing whether the
> partitions need to be recloned.  But you know, the simplest
> solution to that is to assume that they're no good after the letter
> drive assignment and chkdsk, then reclone everything back.

> Heck for that matter, blow away all partitions, create one big one with NTFS formatting.

True.

> The formatting should uncover bad sectors and such, right?

Only if you dont enable the quick format.

>> Trouble is that with a serious BUMP the effect can show up months later.

> Would you know the (theoretical) cause and
> effect that delays the manifestation?  Just curious.

Basically the mechanical damage can show up later with a cracked printed
circuit board trace or with debis that is floating around in the sealed chamber.
That debris can end up getting jammed under the heads, they fly very low.

>> Its probably fine tho, since it presumably happened with
>> the drive not spinning and so with the heads retracted.

> I was hoping, but not hopeful.  Because in mid-last decade, I had
> asked a university IT guy about parking the heads on laptops.  A
> term from the nineties...maybe the eighties.  He laughed.  Apparently,
> that was a quaint notion, but laptop HDDs are too small for that.

He's wrong.

> The heads just bounce along.

Nope, because laptop drives do see rather more physical
stress than normal internal drives in desktop systems.

> Not saying he was necessarily right,

He's wrong.

> or that things don't change.  I just assumed that
> he knew how things worked -- at least back then.

He didnt.

> Are you sure that the heads retract in laptop HDDs?

Yep, and you can see that in the SMART stats too.

> I seem to recall that the SMART report also had a measure
> of how much the spindle axis is displaced.  It indicates
> whether the HDD has been physcially impacted.

There are G sensors with some drives too.

> So I wonder if there are factors other than impacted
> heads that affect the HDD in the case of an impact.

Yes, you can get cracked traces and even loose debris in the sealed enclosure too. 

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chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-11 10:59 -0800
  Re: chkdsk all partitions at once, including those without drive letters Franc Zabkar <fzabkar@iinternode.on.net> - 2012-02-12 06:46 +1100
  Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-12 07:15 +1100
    Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-11 13:00 -0800
      Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-12 08:53 +1100
        Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-11 21:54 -0800
          Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-12 19:31 +1100
            Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-12 07:04 -0800
  Re: chkdsk all partitions at once, including those without drive letters Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-02-11 19:02 -0500
    Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-12 13:21 +1100
      Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-11 22:05 -0800
        Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-12 19:39 +1100
          Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-12 19:24 -0800
            Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-12 19:37 -0800
            Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-13 19:52 +1100
              Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-13 22:20 -0800
                Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-13 22:31 -0800
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-15 02:40 +1100
                Re: chkdsk all partitions at once, including those without drive letters AndyHancock <andymhancock@gmail.com> - 2012-02-14 20:51 -0800
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-15 16:12 +1100
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-15 02:36 +1100
      Re: chkdsk all partitions at once, including those without drive letters Rob <mesamine@gmail.com> - 2012-02-16 03:15 +1100
        Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-16 07:43 +1100
          Re: chkdsk all partitions at once, including those without drive letters Rob <mesamine@gmail.com> - 2012-02-16 14:29 +1100
            Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-16 16:05 +1100
              Re: chkdsk all partitions at once, including those without drive letters Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-02-16 12:40 -0500
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-17 07:59 +1100
                Re: chkdsk all partitions at once, including those without drive letters Rob <mesamine@gmail.com> - 2012-02-17 08:55 +1100
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-17 09:41 +1100
                Re: chkdsk all partitions at once, including those without drive letters Rob <mesamine@gmail.com> - 2012-02-17 10:14 +1100
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-17 11:20 +1100
                Re: chkdsk all partitions at once, including those without drive letters Rob <mesamine@gmail.com> - 2012-02-17 23:37 +1100
                Re: chkdsk all partitions at once, including those without drive letters "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-02-18 01:02 +1100

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