PC takes ages to boot and how to look at it

 Just recently i had multiple VMs that took about 20 minutes to boot. There is a very neat tool to analyse the Windows Boot process called xbootmgr

Using "xbootmgr -trace boot" I was able to see that "autochk" was taking most time of the boot process. 
Googling around lead to the point that autochk thinks that the disk is dirty, may do a checkdisk but doesn´r remove the dirty flag.


Solution for me was manually adding that dirty flag to the partition and reboot, causing autochk do fully run a check and finally it cleand up the state.

Setting the state is done by calling "fsutil dirty set C:" and if you have multiple partitions you may change the drive letter here.

Hope it helps!


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