Despite the fact that the utility Lexar BootIt is developed only for Lexar devices (Micron, Crucial), it can work with flash drives from other manufacturers. This is a free portable program that can change the RMB of a removable drive and make a removable USB device fixed (or vice versa). Lexar BootIt Utility: Flip Removable BitRecently I got a pretty interesting tool – Lexar BootIt. Although both of these methods are quite old and I originally tested them in Windows 7, they continue to be relevant and work equally well in modern Windows 10. 1list volumelist volumeIn this article we’ll take look at two ways to change the RMB bit on a USB stick: using the Hitachi filter driver (changes are made only at a specific computer on the driver level) and changing the removable bit in the controller firmware using the BootIt utility from Lexar (more universal way, but there is a number of restrictions and is not applicable to all models of USB flash drives and SD cards). If this utility does not exist, follow the recommendations in this article.Connect the USB flash drive to any available port on the computer, then open the Disk Management console ( diskmgmt.msc) and make sure that it is determined by the system as Removable.Also you can view the type of device in the Volumes tab in the properties of the drive (as we see here Type: Removable). First of all, try to find such utility and / or firmware on the manufacturer’s website. Some manufacturers release special utilities for flashing the controller of USB drives. You can do this directly (which is quite risky because of the differences in the device-specific hardware implementations, and not always possible), or indirectly – by replacing the response of a USB device using a special driver, which allows to filter out the information in the device response. Thus, in order to convert the USB-flash to the hard disk it is enough to modify this descriptor. If the system determines that RMB=1 when polling the connected device using StorageDeviceProperty function, it concludes that this device is a removable drive.
Contents.RMB bit and USB drivesWindows recognizes USB flash drives as removable devices due to the presence of a special descriptor bit RMB (removable media bit) on each of the devices. Windows supports multiple partitions only for hard disk drives identified as local (i.e. And even if you partition the USB flash drive into two or more volumes using third-party utilities (say, in Linux), only the first partition will be available in Windows. Probably, you may ask why it’s necessary? The matter is that by default Windows identifies all the USB flash drives and SD cards as removable drives that can’t be split into several partitions with the built-in Windows tools. In this article we’ll show you how to make a USB flash drive or an SD card to be identified in the Windows as a common local hard disk.
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