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bug#31994: Support for WinRe partition

From: Brian C. Lane
Subject: bug#31994: Support for WinRe partition
Date: Thu, 19 Jul 2018 15:33:21 -0700
User-agent: Mutt/1.10.0 (2018-05-17)

On Thu, Jun 28, 2018 at 10:36:45AM +0000, Hans-Joachim Baader wrote:
> Hello maintainers,
> Windows 10 uses a recovery partition which is sometimes marked with
> partition type 0x27 on MBR systems. I don't know why some vendors
> use MBR rather than GPT, but it's a fact.
> 0x27 is in fact defined as Windows RE hidden partition (see
> https://www.win.tue.nl/~aeb/partitions/partition_types-1.html).
> I haven't found a way to create a partition with this ID in parted. I used
> parted 3.2 which is 4 years old but I don't think is has been changed
> in Git. For example when I create a NTFS partition and do
> set 3 hidden on
> I get ID 0x17. Perhaps a new flag is needed, e.g.
> set 3 winre on
> Do you think that parted should support that? Perhaps I could contribute
> a patch if it's not supported yet.

It looks like we know about it internally, PARTITION_MSFT_RECOVERY, but
it isn't hooked up to a flag type. It is displayed as diag, but using
diag sets it to 0x12 (COMPAQ_DIAG).

It would probably be a good thing to separate that out. We already have
a msftres that's only used on GPT so I think it makes sense to hook that
command up to 0x27 on MBR. That also means no changes to the list of

If you'd like to try patching it that would be great, thanks!

Brian C. Lane (PST8PDT)

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