Windows 2008 doesn't boot after 8k cluster size partition

Hello community,

You may remember earlier this week I posted a thread in which I was requesting help in setting up a custom step in my Task Sequence that would invoke a custom DiskPart script allowing me to create an 8k allocated size disk. That works fine now.

My new problem however is when SCCM finishes the dump of the WIM file and reboots back in Windows, I get the following message:

A disk read error ocured

Press CTRL+ALT+DEL to restart

Any clues as to why?

For the purpose of this post, here's the content of my script that is called by DiskPart:

select disk=0
clean
create partition primary align=1024
format fs=ntfs unit=8k quick
assign letter=C
active

What's weird is that if I remove the unit=8k switch, everything works fine. I tried with and without the align=1024, that doesn't change anything.

Any ideas what my problem could be?

Let me know if you are missing information that could be helpful to troubleshoot.

Thanks!

Stephane