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Native EFI booting coming to OpenBSD
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One one hand BIOS have been designed for really old hardware. On the other hand UEFI is more complex and there were shown some vulnerabilities that can be used for persistent malware infection.
Newerthless UEFI powers almost every new PC today and is going to power ARMv8 servers too, so IMHO it is good that OpenBSD adapts to this. |
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One of the project developers has posted a great blog post on booting UEFI systems:
http://blog.jasper.la/openbsd-uefi-bootloader-howto/ Last edited by ocicat; 15th September 2015 at 03:52 PM. Reason: spelling |
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I played with it. This amd64 system is one where inteldrm(4) is not available, and I tried both vesa(4) and wsfb(4) ... both worked.
Now I'm back on "legacy" BIOS, where I have full functionality. GPT is now available for testing and breaking by those with greater that 2TB disks. I'd play with it but I don't have any large drives and I don't have GPT provisioning tools handy. (At the moment, fdisk(8) can create a protective MBR but not provision GPT.) |
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Jaspers blogpost worked on a Shuttle XS35V4. Only the install58.fs boots (not the miniroot58.fs and, also not the install58.iso). X doesn't worked... haven't played around because it was deepest night ...
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@jggimi
You don't need to have large HDD to play with GPT. I had 500GB HDD and used this for about one year. On HDD there were Windows 8.1 64bit and Linux. GPT is more flexible than MBR because you can have a lot of PC partitions. On MBR only 4 primary partitions. On the other hand GPT doesn't support boot flag, so you must (unless you play with hybrid MBR) use EFI partition, which in turn requires motherboard firmware to be fairly sophisticated, because it must support FAT filesystem. |
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Thanks for the info, I will give it a try today. I played around yesterday and was happy that this box boots and, that there is a chance to stay away from penguins.
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They're coming, per Ken Westerback's Hackathon report.
Quote:
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