Re: cluster size

[Ian]

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Sorry it took me so long to get back to you.

I pulled out a 30GB hdd that I had sitting around... well, I did the
mkpartfs on it, and sure enough, booted to windows (the new drive was
secondary in this system).  Well, first I went directly to DOS and did a
DIR, kinda surprised to see that the 30GB only had 20gb free.  Ran
scandisk for DOS and it didn't work too good.  It found lots of lost
clusters and claimed that there were too many files in the root directory
to write them as files.  Trying scandisk in windows just complained about
not having enough memory.  I'm guessing the MS is assuming the number of
clusters will not go past a magic number, and running 4k cluster on a 30GB
drive easily passes that number.  Wish I would have grabbed the scandisk
log, oh well, perhaps I'll do that today.

As far as what sizes get what cluster size, I guess that would have to be
trial and error.  Perhaps there is a system to it, like 4k=8gb 8k=16gb
16k=32gb?

I'll do more research if I have time today.  Let me know if there is
something else I could try.


Ian Boje
address@hidden address@hidden

On Fri, 13 Oct 2000, Andrew Clausen wrote:

>Ian wrote:
>> 
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>> Yah, I do service work on windows (barf!) machines.  We've used
>> things like ezdrive to fix old BIOSes (BIOI?), and it does the same thing.
>> We've gone to the point of making two 8gb partitions instead of one big
>> 15 on machines we can't update the bios.  I suppose thats a lazy way of
>> doing it, as we probably could find another disc size remap utility.
>
>/me shudders.  Damn BIOSes (!)
> 
>> What will happen in some cases is scandisk will take forever, to the point
>> where you don't want to wait anymore (like several days).  It does
>> not happen in all cases, or perhaps an error in the file system
>> causes it to happen.  Older versions of norton ghost do the same thing (4k
>> instead of 8k).
>
>Ouch!
>
>So, it's probably when the FATs get to a certain size...?
>
>This could be a problem, because when Parted grows a partition, it
>can't grow the cluster size.  I guess there's nothing much we can do
>about this :-(
>
>So, I guess we're left with: trying to get the cluster size up to
>8k for certain size fs's.  I'd like to know: at what size should
>we use 8k?  And 16k?
>
>Thanks,
>Andrew Clausen
>
>
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