peanutbutter:/home/tayfun# aptitude purge mdadm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
The following packages will be REMOVED:
0 packages upgraded, 0 newly installed, 1 to remove and 3 not upgraded.
Need to get 0B of archives. After unpacking 791kB will be freed.
Do you want to continue? [Y/n/?]
Writing extended state information... Done
(Reading database ... 184934 files and directories currently installed.)
Removing mdadm ...
W: mdadm: I'll update the initramfs, but if you need MD to boot
W: mdadm: with initramfs, you'll be screwed!

Haha, neyse ki boot bölümü raid üzerinde değil.