I want to remove Windows Server Essentail 2012 as the EX490 runs better with V1 due to add ons. I have all the recovery disks but can someone help me create an unanttended install and alocate atleast 60GB to the OS drive instead of 20GB please.

Thanks in advance

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EX490
CPU E6550
8TB HDD's
2GB RAM

Not quite sure you can do that but I do believe there are posts in the forums about changing the 20MB Partition size after WHS is up and running bit to be confused with the posts from those who installed WHS on a 60GB SSD a few years back.

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Exploring the possibilities!

Migrated from WHS2011 to WS2012E: HIGHLANDER

~ Norco 4220 Enclosure
~ Gigabyte GA-990FXA-UD5
~ AMD Phenom II X4 995 3.2 GHz
~ 8 GB Corsair Vengeance DDR3 1600 (PC3 12800)
~ 3 Supermicro AOC-SASLP-MV8

To the best of my knowledge you can't do that with the HP MediaSmart Server Recovery Disk. It is not like the WHS Retail Disk. The volume.image file on the disk is like a custom HP installation with the extra HP media stuff. So the rules for an unattended file don't apply.

If you don't mind wiping all you data, you can try something that might work. Start the install of the HP OS as usual. Then when the server reboot for the 1st time. Kill the power when it boots up again. Put the hard drive in a PC. There should be only a C: partition. No D: yet. Then using Disk Management resize that partition. Then put that drive back into the server. The install should continue from there and finish. If your unsuccessful then format the drive and start again the standard way.

Ley us know if it works.

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HP MediaSmart EX495 E8600 3.2Ghz CPU, 4GB ram, 8TB storage including 3TB drives in pool. WHS with Active Directory, WDS, Media Center Master, Logitech server. Office 2010 server with client add-ins.
Microsoft MVP - Windows Home Server.