I am having the exact same problem as described here: http://www.wilderssecurity.com/showthread.php?t=229205&highlight=E00101F4 (sorry topic was to old to be replied on) Both safe and normal mode of Disk Director (latest version) don't work. They both result in: E000101F4 I need to get there cause I created a new bootable Vista partition (VistaBoot), so I could change the clusters. And I wanted to hide the VistaBoot partition from Windows. Since this didn't work, I booted to Windows Vista and ran Disk Director from there and hide the partition from there. This resulted in a non booting Windows Vista with the following error code: 0xc00000001 (winload.exe). How can I fix this? //update Went back to the command line from the Windows Vista CD, than used bcdedit and it showed me the Windows Vista partition was located on "I:\", however when I go to I: it says it cannot be read. I also tried using CHKDSK, but it says it cannot be run, caused it's RAW (or something). I did all the necessary steps in order to get my Vista installation running from 16k clusters (hence the BootVista partition). What am I doing wrong? Sigh.