On 2018-02-02 04:03, Neil Rickert wrote:
On 02/01/2018 01:16 PM, Per Jessen wrote:
The system might not be able to boot:
* Missing device with size equal or bigger than 256 KiB and partition id bios_boot
As others have said, it is possibly needed with GPT partitioning, when grub is installed in the MBR. It is not needed on EFI boxes.
Leap 15 is using GPT partitioning on a clean disk. If you want to force it to use legacy partitioning, then use "fdisk" before you start the install, and be sure to do a "w" in "fdisk" (even without creating partitions). Then you will get legacy partitioning.
If you install grub2 in the root partition or in "/boot", then I don't think this happens. But you might not be able to install grub in a partition if the file system doesn't support that.
Even if not installing grub on the MBR, YaST may insist on creating that BIOS partition if there are GPT partitions around. I was surprised yesterday when installing 42.3 YaST on one disk with traditional partitioning, YaST insisted on creating the BIOS partition on another disk that had free space and a GPT partition. I had to go in expert mode with no proposal to be able to get rid of it. That is, it seems some code in YaST wants to create that BIOS partition even when not strictly needed.
Using GPT partitioning on a non-EFI box, you can just create a bios_boot partition. I use "gdisk" for that. I set it to use 1-sector alignment. That allows me to tell it to add that partition between sectors 34 and 2047. That space is otherwise unused.
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