Disks & Storage

Read SMART health for a drive (defaults to the internal disk): temperature, wear level, power-on hours, healthy/failing.

Report total, used, and free disk space on the startup drive.

Analyse where disk space is going and report the biggest folders in the user's home with their sizes. Read-only.

Inspect an external/removable drive, USB stick, or SD card for counterfeit-capacity red flags (read-only). Returns its claimed capacity, brand/media name, bus, and any risk factors, plus a verdict. Counterfeit flash claims a huge size but actually holds far less — the controller lies.

Run the definitive counterfeit test on an external/removable drive, USB stick, or SD card: it writes temporary files into the drive's free space (existing files are never touched) then reads them back to prove the drive really holds its claimed capacity — a fake fails the read-back. Opens a progress panel and can take several minutes.

List every disk on this Mac with its partitions/volumes (name, filesystem, size) and which is the boot disk.

Detailed info for one disk/volume: name, filesystem, size, internal/external, removable, bus, mount point, SMART status, and whether it's the boot disk.

Report a disk's partition scheme (gpt/mbr/apm) and filesystem, with plain-English guidance.

Run a read-only First Aid check on a volume and report whether its structure is healthy or needs repair.

Mount a volume so it appears in Finder.

Unmount a volume (won't unmount the boot volume).

Eject an external/removable disk so it's safe to unplug (refuses the internal/boot disk).

Run First Aid repair on a non-boot volume (needs admin). The boot disk must be repaired from macOS Recovery instead.

Repair the partition map/table of a whole external disk (diskutil repairDisk, needs admin) — for a drive that suddenly stopped mounting because its partition table was damaged (unplugged mid-copy, an interrupted clone, power loss during a write) while the hardware itself is healthy. Refuses internal/boot disks. If the map can't be rebuilt, the recovery path is: recover files first, then reformat in Disk Manager.

Format/erase an external or removable drive (USB stick, SD card, external SSD). The agent verifies the target is safe (never the internal/boot disk) then opens Cyclone's Disk Manager for you to choose the filesystem and confirm — formatting erases everything on the drive.

Repartition an external or removable drive. The agent verifies the target is safe (never the internal/boot disk) then opens Cyclone's Disk Manager to set up partitions/volumes. Can erase data — back up first.

Estimate a free-space wipe WITHOUT starting anything (read-only): reports the target volume's free/total space and, for each erase method (1-pass zero, 1-pass random, DoD 3-pass, DoD 7-pass, Gutmann 35-pass), how much data would be written (free space × passes). Wiping free space overwrites already-deleted data so old files can't be recovered — it never touches existing files.

Wipe the FREE disk space on a drive so previously-deleted files can't be recovered — this overwrites only free/unused space and NEVER touches your existing files. The agent opens Cyclone's Free Space panel for you to pick the drive and erase method and confirm; a live progress bar shows the passes.

DESTROY an entire EXTERNAL or removable drive (USB stick, SD card, external SSD) — erases every file, partition and all recoverable data, IRREVERSIBLY. The agent verifies the target is safe (never the internal/boot disk) then opens Cyclone's Full Drive Wipe panel for you to choose the erase method and confirm.

Make a bit-for-bit clone of one drive onto another (e.g. copy a disk to a spare, or image a failing drive). The agent opens Cyclone's Drive Cloner panel for you to pick the SOURCE and DESTINATION drives and confirm — cloning OVERWRITES everything on the destination, and the copy is SHA-256 verified when it finishes.

Benchmark this Mac's startup-disk read and write speed by writing a temporary test file into free space and reading it back (the temp file is deleted afterwards — your files are never touched), then report the write MB/s, read MB/s, and detected drive interface. External-drive benchmarking is done in the Free Space panel.