https://community.hpe.com/t5/proliant-servers-ml-dl-sl/upgrade-to-raid-after-os-install/m-p/4180797#M77811 A few months ago I installed Windows 2003 SBS on a HP DL140 G3.<BR /><BR />The machine had been recommisioned from another project - and I was told that there was no onboard RAID. After a quick look at the BIOS I could see no obvious RAID config.<BR /><BR />With this knowledge - I reluctantly installed SBS onto a single drive and planned to install software RAID.<BR /><BR />In the past few days - I have had to perform some administration on the box - and while browsing the BIOS I found that the machine does have RAID after all!<BR /><BR />The question I know you will all be waiting for ...<BR /><BR />I do have a pair of SATA drives in the box.<BR />Can I enable RAID 1 without having to reinstall the OS ?<BR /><BR />Also - When I switched the RAID controller on - I expected that Windows would still boot from the configured drive. This did begin to happen and I got the Windows happy lights - but then the machine rebooted itself.<BR /><BR />I assume that this was because the OS drivers were not installed - and the RAID controller caused the OS problems. Wed, 16 Apr 2008 07:53:00 GMT Gary Ranson 2008-04-16T07:53:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/upgrade-to-raid-after-os-install/m-p/4180797#M77811 A few months ago I installed Windows 2003 SBS on a HP DL140 G3.<BR /><BR />The machine had been recommisioned from another project - and I was told that there was no onboard RAID. After a quick look at the BIOS I could see no obvious RAID config.<BR /><BR />With this knowledge - I reluctantly installed SBS onto a single drive and planned to install software RAID.<BR /><BR />In the past few days - I have had to perform some administration on the box - and while browsing the BIOS I found that the machine does have RAID after all!<BR /><BR />The question I know you will all be waiting for ...<BR /><BR />I do have a pair of SATA drives in the box.<BR />Can I enable RAID 1 without having to reinstall the OS ?<BR /><BR />Also - When I switched the RAID controller on - I expected that Windows would still boot from the configured drive. This did begin to happen and I got the Windows happy lights - but then the machine rebooted itself.<BR /><BR />I assume that this was because the OS drivers were not installed - and the RAID controller caused the OS problems. Wed, 16 Apr 2008 07:53:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/upgrade-to-raid-after-os-install/m-p/4180797#M77811 Gary Ranson 2008-04-16T07:53:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/upgrade-to-raid-after-os-install/m-p/4180798#M77812 Gary, I believe you need to reinstall OS, 140â s RAID has limitations and not as 300 and up servers, do more research based on chipset that you have init from forum Wed, 16 Apr 2008 23:42:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/upgrade-to-raid-after-os-install/m-p/4180798#M77812 Oleg Koroz 2008-04-16T23:42:00Z