On Sat, March 20, 2010 17:05, David Hubbard wrote: > From: [email protected] >> >> Probably. But it may not be worth it. Why does it matter to >> you? Not saying that it doesn't matter, just trying to >> understand why. Getting it to be /dev/sda during install, >> for instance, wouldn't guarantee that it >> would be that when you booted the installed kernel. > > Because I can't figure out how to get the OS installed > otherwise. As it stands currently, I would like to use > RAID 50 on both the internal and external arrays. Dell's > raid controllers do not allow you to create anything other > than one logical drive presenting 100% of the physical > raid 50 array size to the OS as a drive, so basically > this means my external /dev/sda drive shows as 24 TB, > my internal /dev/sdb drive shows as 4.5 TB. > > So, trying to install RHEL 5.4 x86_64, the LVM wizard > cranks up and since the external array is /dev/sda > I un-check the box to tell the installer to not look > at that 'drive'. I leave /dev/sdb checked which is > my 4.5 TB internal drive. Proceed and then the > installer tells me my boot drive is managed by GPT > but the system cannot boot with GPT and I'm done. > As far as I can tell there is not currently a supported > way to get RHEL 5 installed with the server in UEFI > boot mode, or at least I can't figure it out, I did > try putting it in UEFI mode but it refused to boot > off an ISO on DVD or a native DVD. So you can't > boot off a GPT drive and you can't install to a > MBR drive lol. > > As best I can tell, this leaves me with the only > option being get internal to show as /dev/sda, > waste a bunch of money by being forced to reconfigure > that array as a RAID 1 of two drives for the sole > purpose of being able to present a 'drive' of less > than 2 TB to the OS so RHEL will install on it using > MBR as /dev/sda, do the remaining six disks as RAID > 50 and let them become /dev/sdb, keep the external > array as RAID 50 /dev/sdc now. I can't accomplish > this without the internal raid controller being > /dev/sda though so the installer will make it past the > partitioning step. Also quite unhappy that the two 750 > GB drives that should have been part of my RAID 50 > internal will effectively be used to store about 2 GB > of boot and OS files but I think I'm stuck. >
I'm somehow missing how getting the non-installable smaller GPT VD to be /dev/sda will change that scenario. The other responder echoed one of my initial thoughts when he suggested turning off the external array. That should do it. I did run across a post over on the Centos forums where a guy said that he got around a Centos refusal to install on GPT by dropping to an alternate console (Ctrl-Alt-F2) and wiping the beginning of the drive with "dd if=/dev/urandom of=/dev/sda". Said that on reboot it didn't quibble about the drive. No other details; you might end up with only 2Tb usable as I think about it. Perhaps worth a try. _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
