# Re-read the partition table instead of rebooting
sudo blockdev --rereadpt /dev/sdc

# Information
sudo blockdev --getsize64 /dev/sdc     # size in bytes
sudo blockdev --getss /dev/sdc         # logical sector size
sudo blockdev --getra /dev/sdc         # read-ahead in 512-byte sectors

# Set read-ahead (useful for sequential workloads) and read-only mode
sudo blockdev --setra 4096 /dev/sdc
sudo blockdev --setro /dev/sdc
sudo blockdev --setrw /dev/sdc