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RMPrepUSB
What it is
RMPrepUSB is a Windows 32-bit utility for partitioning and formatting drives, especially USB drives. It can install or repair boot code, clear write-protect or read-only flags, and install bootloaders including MSDOS, FreeDOS, Syslinux, and grub4dos. For drive checks, it can test reported capacity and run sequential read and write speed tests. A 32-bit QEMU MBR emulator can boot from a USB drive with full write access. The utility can back up a whole USB drive, its partitions, or selected portions to an image file, then restore from an image. Its download includes the RMPartUSB.exe command-line utility, and a portable version can run from an extracted folder without installation. The product page describes MBR drive creation for drives under 2 TB and says GPT support is minimal. RMPrepUSB is freeware for private and public non-commercial use; commercial use and redistribution require permission or licensing. The download page lists v2.1.746 dated 2022-05-29 and identifies v2.2.4 as an experimental beta that may contain bugs. The licensing page states that use is at the user's own risk and disclaims responsibility for data loss or other damage.
For and against
For
- Can back up and restore USB drive images.
- Includes a portable version that runs without installation.
- Tests reported capacity and sequential read/write speed.
- Supports several bootloader options.
Against
- Windows 32-bit utility only.
- GPT support is described as minimal.
- Commercial use and redistribution require permission or licensing.
- Experimental beta may contain bugs.
The verdict
RMPrepUSB offers drive preparation, boot, test, and image backup tools for Windows, with a portable option. Its MBR and GPT limits, usage terms, and experimental beta status are important considerations.
Who it suits
RMPrepUSB may suit Windows users preparing or checking USB drives for private or public non-commercial use. Commercial use requires permission or licensing.
Plans and prices
RMPrepUSB
Free for private use; public non-commercial use; commercial use and redistribution require permission or licensing
Read 3 Oct 2026 · rmprepusb.com
On the record
- Boot code
- It can install or repair boot code and clear write-protect or read-only drive flags.rmprepusb.com · read 3 Oct 2026
- Boot emulation
- It includes a 32-bit QEMU MBR emulator that can boot from a USB drive with full write access.rmprepusb.com · read 3 Oct 2026
- Bootloaders
- The utility can install bootloaders including MSDOS, FreeDOS, Syslinux and grub4dos.rmprepusb.com · read 3 Oct 2026
- Command line
- The download includes the command-line utility RMPartUSB.exe.rmprepusb.com · read 3 Oct 2026
- Current release
- The download page lists v2.1.746 dated 2022-05-29 and labels v2.2.4 as an experimental beta that may contain bugs.rmprepusb.com · read 3 Oct 2026
- Drive images
- It can back up a USB drive, its partitions, or selected portions to an image file and restore from an image.rmprepusb.com · read 3 Oct 2026
- Drive testing
- It can test drives for fake reported capacity and perform a sequential read and write speed test.rmprepusb.com · read 3 Oct 2026
- Intended users
- The site describes the utilities as free for private use and public non-commercial use, with commercial use subject to permission or licensing.rmprepusb.com · read 3 Oct 2026
- Limits
- The product page describes MBR drive creation as supporting drives under 2 TB and says GPT support is minimal.rmprepusb.com · read 3 Oct 2026
- Portable use
- A portable version can be extracted to a folder and run under Windows without installation.rmprepusb.com · read 3 Oct 2026
- Purpose
- RMPrepUSB is a Windows 32-bit utility for partitioning and formatting drives, especially USB drives.rmprepusb.com · read 3 Oct 2026
- Security and liability
- The licensing page says use is at the user's own risk and disclaims responsibility for data loss or other damage.rmprepusb.com · read 3 Oct 2026
- Source and licensing
- RMPrepUSB is freeware and closed source; its source code is not available, and public redistribution requires permission.rmprepusb.com · read 3 Oct 2026
- Support
- The site directs users to the reboot.pro forum or the author's Contact Me page for help; licensed use receives only reasonable-endeavours support.rmprepusb.com · read 3 Oct 2026
