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Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as
From: |
Andrei Borzenkov |
Subject: |
Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable |
Date: |
Sat, 19 Dec 2015 22:11:05 +0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 |
19.12.2015 21:39, Thomas Schmitt пишет:
>
> I assume that its MBR lets any decent EFI ignore the GPT:
>
> MBR partition table: N Status Type Start Blocks
> MBR partition : 1 0x00 0xee 1 63
Those implementations I am aware of will skip MBR if protective entry is
found. None of them also actually checks partition size. I am aware of
one case where incorrect partition size caused problems (libparted,
although I think it was caused by vendor patch); neither edk2 not GRUB
nor Linux care for it.
> MBR partition : 2 0x80 0x07 64 272
> MBR partition : 3 0x00 0xef 336 5760
> MBR partition : 4 0x00 0x07 6096 26708
> MBR partition path : 3 /efi.img
>
> Isn't 0xee a misnomer now that you decided for MBR ?
This looks like "normal" hybrid MBR
(http://www.rodsbooks.com/gdisk/hybrid.html).
>
>
> Nevertheless, your overlapping layout would have the appeal of
> giving a mountable partition:
>
> MBR partition table: N Status Type Start Blocks
> MBR partition : 1 0x80 0x00 0 32804
> MBR partition : 2 0x00 0xef 336 5760
>
> It would travel on the ticket that EFI shall ignore MBR partition
> type 0x00.
>
I'm not sure where this assumptions comes from. EFI does not say
anything about other partition types, besides that other partition
entries /should/ not be defined. So any additional partition besides
protective is strictly speaking against EFI standard.
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, (continued)
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Alexander E. Patrakov, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Alexander E. Patrakov, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Alexander E. Patrakov, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Alexander E. Patrakov, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable,
Andrei Borzenkov <=
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/19
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Andrei Borzenkov, 2015/12/20
- Re: [Bug-xorriso] [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/20
- [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/20
- Re: [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/20
- Re: [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Alexander E. Patrakov, 2015/12/20
- Re: [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Alexander E. Patrakov, 2015/12/23
- Re: [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Thomas Schmitt, 2015/12/23
- Re: [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Andrei Borzenkov, 2015/12/24
- Re: [Bug-xorriso] Test Proposal for [bug #46716] Protective MBR partition is not marked as bootable, Andrei Borzenkov, 2015/12/20