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Sysprep

USB install media with WIM file larger than 4GB

There’s nothing in the UEFI specifications that prevents booting from an NTFS formatted USB flash drive. In fact, this so-called limitation is entirely artificial. Luckily, most modern computers can boot from a single-partition NTFS formatted USB flash drive. Thus, one can indeed install Windows 10 from a custom WIM image larger than 4 GB, which is

Hyper-V and Differencing Disks

Especially when testing Windows Insider Preview builds in various editions and languages, I use differencing disks on Hyper-V virtual machines. This not only allows me to save storage space on my dedicated Hyper-V drive, but it also makes creating new virtual machines really fast, taking just seconds to boot to the desktop when a VM

War Stories: Sysprep and BitLocker

Yesterday, I decided to do a clean install of the latest Windows Insider build 17711 on my HP ProBook laptop. I do traditional installs quite seldom, usually creating deployment images in Hyper-V. This is practical because Hyper-V standard checkpoints offer an easy way to restore a VM to any point throughout the process whenever something