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I have installed arch linux in uefi mode and i want to install another linux os(oracle linux is not booting in uefi mode) in bios mode in another partition.Do i need to make another partition for bios?
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You would have to enable/disable compability mode every time you wanted to reboot to the other os. I would go and get oracle linux fixed instead so that it can boot in uefi mode.
Evil #archlinux@libera.chat channel op and general support dude.
. files on github, Screenshots, Random pics and the rest
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@OP: If you are using gummiboot then you can just copy over the kernel image & initrd from Oracle to the EFI system partition and make a menu entry for it to get it to boot in EFI-mode; if you do this you will have to copy them over again every time the kernel is updated in Oracle.
If you don't want to do this and you have a GPT disk, you will need a BIOS boot partition (type "EF02" in gdisk, I use sectors 34-2047, no filesystem needed) to hold the GRUB bootloader in a non-EFI system.
I'm not 100% sure, but I think GRUB (in your Arch system) may provide a menu entry for Oracle if you run `grub-mkconfig` from Arch after installing Oracle even if it is installed in non-EFI mode (tell the Oracle installer not to install a bootloader if you want to try this).
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i have GPT disk and i created a 100mb bios boot partition for oracle linux, at the end of installation getting error(bootloader not installed) and now arch also not showing up in boot options, i think i need to reinstall arch bootloader.
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i created a 100mb bios boot partition for oracle linux
How did you create it?
Did you make a filesystem on the partition?
Do you actually have a GPT disk?
It only needs to be ~1MiB in size.
Sometimes, non-EFI mode will not work at all on a GPT disk.
https://wiki.archlinux.org/index.php/GU … OS_systems
And yes, you have to re-install your Arch bootloader -- when you do, GRUB (if you are using that) may pick up the Oracle system and provide a menu entry for it (make sure you install os-prober before running `grub-mkconfig`).
We really could do with more informative posts -- I don't even know if you have a GPT or MBR disk or what boot loader/manager you are using...
http://www.catb.org/esr/faqs/smart-questions.html
EDIT: Sorry, I didn't read your post properly.
Last edited by Head_on_a_Stick (2015-05-10 16:25:54)
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previously i had installed gummiboot, now can i install grub?
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previously i had installed gummiboot, now can i install grub?
If you have gummiboot then try copying over the Oracle kernel image & initrd to your Arch EFI system partition (ie, /boot) and make a menu entry for them -- it's probably best to use a /boot/oracle subdirectory (call the path relative to the ESP in oracle.conf).
https://wiki.archlinux.org/index.php/Gu … ot_entries
As I said, if this method works you will have to remember to copy over the new kernel image & initrd again whenever the kernel is updated in Oracle.
EDIT: It would be nice if you actually answered my questions...
Last edited by Head_on_a_Stick (2015-05-10 16:33:52)
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but oracle linux doesn't support uefi then what makes it to copy oracle kernel image to arch efi system partition?
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but oracle linux doesn't support uefi then what makes it to copy oracle kernel image to arch efi system partition?
*You* do...
Actually, thinking about this some more that won't work unless the Oracle kernel has "CONFIG_EFI_STUB" enabled and it probably doesn't
Answer my questions about your BIOS boot partition please (post #5).
You could try using GRUB in Arch instead -- I seem to remember having success booting CrunchBang in EFI mode by using GRUB(EFI) from a different system.
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