Correct
- DW - -----Original Message----- From: arm.ebbr-discuss-bounces@arm.com arm.ebbr-discuss-bounces@arm.com On Behalf Of Daniel Thompson Sent: Tuesday, July 3, 2018 8:59 AM To: Grant Likely Grant.Likely@arm.com Cc: boot-architecture@lists.linaro.org; hare@suse.de; arm.ebbr-discuss arm.ebbr-discuss@arm.com; Nicolas Dechesne nicolas.dechesne@linaro.org; Architecture@cam-list1.cambridge.arm.com Subject: Re: [Arm.ebbr-discuss] Questions about GPT
On Tue, Jul 03, 2018 at 04:46:38PM +0100, Grant Likely wrote:
On 03/07/2018 10:08, Nicolas Dechesne wrote:
On Mon, Jul 2, 2018 at 11:59 PM Alexander Graf agraf@suse.de wrote:
On 02.07.18 20:40, William Mills wrote:
[...]
I am still trying to figure out if a real issue exists or will soon exist. If this issue is real, I think it should be addressed in UEFI but if not there then in EBBR. We move "disks" around a lot more than other people do.
Yes, let's double check with Hannes :).
On Dragonboard 820c, that has on board UFS disk:
Found valid GPT with protective MBR; using GPT. Disk /dev/sda: 6335488 sectors, 24.2 GiB Model: THGBF7G8K4LBATRB Sector size (logical/physical): 4096/4096 bytes
Hmmm. That's interesting. I had assumed that on UFS devices, device partitions would be used and the GPT would be omitted. Evidently that is not done on the 810c.
I might be missing something but can EFI run on top of raw hardware device partitions? I didn't think EFI provided any means to locate an ESP except when they are described in one of the three supported ways (GPT, MBR or El Torito).
Daniel.
Is that just because sticking with GPT is the 'known-working-solution'? Will there eventually be a time when OSes use UFS-native partitioning? Or should the recommendation be to keep doing GPT partitioning on the whole device?
I'm assuming that UFS-native partitioning allows for better management of the underlying flash media, but I'm no expert.
How do UFS partitions show up in Linux right now? Do we have good partitioning tools for UFS? Will UFS partitioning cause issues for the distros?
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