I have a disk from another server installed on a new server. However, when I try to make a filesystem on it,
# mkfs -t ext4 /dev/sdd1 mke2fs 1.42.8 (20-Jun-2013) /dev/sdd1 is apparently in use by the system; will not make a filesystem here!
This is a new disk to the new server. It is not mounted.
What’s wrong here? How to fix it?
This is possibly caused by a RAID signature on the disk showing that the disk belongs to a RAID.
If you are sure that the disk will never be used in a RAID system anymore, you may follow this tutorials to clean the RAID signature: