FYI: NTFS Cluster Size /3rd Party Disk Mgmt Tools
From: SlowJet (anonymous_at_discussions.microsoft.com)
Date: 08/30/04
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Date: Mon, 30 Aug 2004 09:51:14 -0700
There could a few fatctoers involved in that problem.
The MFT and overallocated files (before and after OA is
released?
Interesting,
SJ
>-----Original Message-----
>Here is some information on Service Pack 2 for XP,
related
>to Disk partitioning and Cluster sizes. This is
complicated, but
>I'll try and describe this as best as I can.
>
>This came to light when doing a SP2 "Repair Install".
The target
>system used a cluster size greater than the default
value of 4-K.
>The repair install ran successfully. However, at the
first reboot
>the system halted with "Disk Read Error" (Black screen).
After
>some investigation, I used Partition Magic 8.01 to
resize the XP
>partition back to 4-K Clusters. XP then booted normally.
>
>Next I restored the Sp1a image to the PC. As a test
case, I used
>an Acronis Disk Management tool to resize the partition
clusters
>up to 64-K (Largest). I then installed SP2 but in a
standard update
>mode. System booted normally and used the 64-K clusters.
>Then I did a "Repair" install on the partition. At
reboot the Disk
>read error re-appeared. I resized the clusters to
32,16,8-K all w/
>the same Disk error. Finally, I resized back to 4-K and
the
>system booted normally.
>
> I've verified this on 3 different systems. Apparently,
there is some
>change to NTFS Version 3.1 that prevents new installs
from using
>cluster size other than the default of 4-K. However, if
the partition
>is already ~+4-K XP will run after a SP2 update - but
not if a in
>place or Repair install (Sp2) is used.
>
>I've tested this with Partition Magic, Acronis & BootIT-
NG so the
>changes are not specific to any one 3rd party disk mgmt
tool.
>
>If anyone has any input I would appreciate it. I've
contacted MS
>but haven't obtained any useful feedback or
acknowledgement that
>NTFS has changed with Service Pack 2.
>
>
>.
>
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