TmpDisk for Mac

What this utility does

TmpDisk is a no-cost macOS tool for creating and managing RAM-based disks. It lets you allocate a portion of your system memory as a virtual drive so frequently accessed files and temporary data can be read and written much faster than on a physical hard drive or SSD.

Why it can speed up your Mac

• Uses volatile memory for I/O operations, which delivers far lower latency than conventional storage.
• Lets you tailor the disk capacity to match your workflows, from a few hundred megabytes to several gigabytes.
• Reduces wear on physical drives by offloading temporary or scratch files to RAM.

Setup and day-to-day use

TmpDisk presents a simple, user-friendly interface that makes RAM disk creation accessible to beginners while still offering the controls power users expect. Creating a disk, changing its size, mounting or unmounting, and wiping its contents can all be done from the app without manual Terminal commands.

Note: RAM disks are ephemeral. Data stored there is lost when the Mac shuts down or reboots unless you explicitly back it up to permanent storage.

Security and data handling

• Securely clears data when disks are removed or the app directs a wipe, preventing leftover fragments.
• Offers options to export important files to persistent storage before shutdown to avoid accidental loss.

Alternate option to consider

If you’re looking for another free solution with cloud-sync capabilities, MEGAsync is a commonly suggested alternative. While it focuses on synchronizing files across devices rather than creating RAM disks, it can complement a workflow where temporary RAM-disk storage is periodically backed up to cloud storage.