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Categories Disk Cloning Enterprise Backup Macrium Reflect Technical Details Comparisons View all alternatives Compare with EaseUS Todo Backup Score 8. Macrium has posted somewhere that one issue is that their geometry is incompatible with Reflect's image file format, and another issue is that Windows itself does not support making VSS snapshots of volumes that reside on removable storage class devices, which would prevent keeping those volumes online during imaging/cloning within Windows. Macrium Reflect is an endpoint and server backup and cloning solution from Macrium Software (aka Paramount Software UK), available in personal and professional editions. Reflect does not support imaging or cloning removable storage class devices, although they can be the destination of an image backup job. If you've ever noticed that Windows uses different icons in "This PC / My Computer" for external hard drives compared to flash drives, those icons correspond to the two different classes. Flexible Macrium has solutions for IT professionals, repair shops and even disk OEMs. Both live and offline systems can be safely and coherently cloned, via portable media or a bootable environment. The vast majority of flash drives are considered "removable storage". Powerful Advanced features such as intelligent sector copy and delta cloning make Macrium Reflect the fastest cloning tool available. Hard drives and SSDs, even when connected via methods such as USB, are fixed disk class. The first is "fixed disk" and the second is "removable storage", although these days neither one is precisely accurate according to its name anymore.

Building on Froggie's answer, there are two "classes" of storage.
