It will take you 10-12 hr, if you have to install a previous edition to get the full esd temp url. I've installed it yesterday (about 24hr ago) and it still doesn't get offered
UUP>ISO 15019 enterprise x86 en-US: Code: ============================================================ Converting CAB -> ESD . . . ============================================================ =============================================================================== Creating Setup Media Layout . . . =============================================================================== =============================================================================== Creating boot.wim . . . =============================================================================== Using LZX compression with 8 threads Archiving file data: 702 MiB of 702 MiB (100%) done =============================================================================== Creating install.wim . . . =============================================================================== Using LZX compression with 8 threads Archiving file data: 4739 MiB of 4739 MiB (100%) done =============================================================================== Adding winre.wim to install.wim . . . =============================================================================== =============================================================================== Creating ISO . . . =============================================================================== OSCDIMG 2.56 CD-ROM and DVD-ROM Premastering Utility Copyright (C) Microsoft, 1993-2012. All rights reserved. Licensed only for producing Microsoft authorized content. Scanning source tree (1500 files in 55 directories) Scanning source tree complete (1621 files in 97 directories) Computing directory information complete Image file is 3026714624 bytes (before optimization) Writing 1621 files in 97 directories to 15019.1000.170121-1513.RS_PRERELEASE_CLIENTENTERPRISE_VOL_X86FRE_EN-US.ISO 100% complete Storage optimization saved 20 files, 464896 bytes (0% of image) After optimization, image file is 3029792768 bytes Space saved because of embedding, sparseness or optimization = 464896 Done. Press any key to exit.