Talk:GRUB/Chainloading

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More info needed around dual-booting Windows

Talk status
This discussion is done as of 17 July 2022.

In order for grub2-mkconfig to find Windows partitions through the 30_os-prober script, the sys-boot/os-prober package needs to be installed. grub2-mkconfig would not find my Windows partition until that was installed. I'm not sure if this is a missing dependency in the ebuild, or something that should be mentioned in this doc somewhere. DarkMoon (talk) 00:58, 20 October 2013 (UTC)

=sys-boot/grub-2.00_p5107-r1
Seems this ebuild version of grub mentions within it's elog statements to manually install os-prober if this feature is desired. I'll make a note.---Roger (talk) 02:51, 20 October 2013 (UTC)
A fix was provided (in GRUB2/Chainloading#Probing). --Blacki (talk) 02:49, 17 July 2022 (UTC)

Windows (MSDOS based boot loaders)

Talk status
This discussion is done as of 17 July 2022.

"When Windows (or another MS DOS based boot loader) is installed on another disk, then regular chainloading in the grub.cfg is sufficient to boot it."

I found that following the directions under the "Another bootloader" section resulted in a blank screen. I'm going to modify this section to reflect the solution that worked for me. --Astronome (talk) 21:34, 2 January 2017 (UTC)

A fix was provided (Special:Diff/586346). --Blacki (talk) 02:53, 17 July 2022 (UTC)

Windows 7 BCD error

Talk status
This discussion is still ongoing.

Hi, Charles17‎. All I know is that I ran into this error using the Windows 7 example, and the UUID example works well.

I shrank partition 2 (C:\) of an old laptop under Windows 7, deleted partition 3 (recovery stuff) and created an extended partition for some Gentoo partitions, using fdisk on a Gentoo boot stick. Originally there were 4 primary partitions. --Adr (talk) 10:15, 10 March 2021 (UTC)

That section in this article is about the UUID of the partition which is not UUID but PARTUUID. See the output of blkid.
--Charles17 (talk) 10:47, 10 March 2021 (UTC)
Thanks. That's what I did. Only the UUID example (sic) works in my case. Other readers might want to know. --Adr (talk) 12:28, 10 March 2021 (UTC)