For developers or air-gapped environments, you can create a custom .deb package containing only diskprobe :

Use lsblk or fdisk -l to identify the disk you want to probe.

Clean Up Your iPhone: A Deep Dive into DiskProbe If you've ever been hit with the dreaded "Storage Almost Full" notification on your iPhone, you know the frustration of deleting apps and photos only to see the bar barely move. Enter , a powerful visual storage analyzer for jailbroken iOS devices that helps you hunt down the hidden files eating up your space. What is DiskProbe?

DiskProbe defaults to the first sector. You will see the MBR: 446 bytes of bootstrap code, followed by the 64-byte partition table.