[Bug 1049549] Re: Ubiquity proposes useless options that break Windows boot

[Dmitrijs Ledkovs]

"If I have multiple linux distributions I may want to re-install grub to the partition with '/boot' from the other install, not the current one." ----> why would you want to do that?
because grub is multi-os bootloader. Regardless of where it is installed: so if I have /dev/sda /dev/sda1 /dev/sda2 /dev/sda3 and my /boot is on /dev/sda2 and fedora on /dev/sda1 & ubuntu on /dev/sda3, it actually does makes sense to install grub-pc stage1 bootcode into /dev/sda. (we are not talking about the extra files which will still end up on the file system)

"Maybe I'm done with windows, do not want to boot it but want to keep it
for accessing it's files?" ----> in this case you don't need to install
GRUB into Windows PBR.

Well it is recommended by grub upstream to install stage1 onto /dev/sda
and not the partitions e.g. /dev/sda3

---

Just to be clear:
If Windows is installed onto /dev/sda1 you are saying it is potentially harmful to install grub into /dev/sda1 or /dev/sda?


** Summary changed:

- Ubiquity proposes useless options that break Windows boot
+ Ubiquity manual partitioning offers to install grub in a way that may break Windows boot

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https://bugs.launchpad.net/bugs/1049549

Title:
  Ubiquity manual partitioning offers to install grub in a way that may
  break Windows boot

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  The "Something else" option (= manual partitioning screen) allows the user to change the location where GRUB will be installed.
  ("Device for bootloader installation" combobox).
  AFAIK, the default entry in this combobox is /dev/sda. Currently the combobox also allows to select any partition (eg /dev/sda1 , /dev/sda2...)

  The following entries are useless and SHOULD be removed:
  - all partitions except the partition containing /boot

  The following entries break Windows boot and MUST be removed:
  - all partitions containing Windows boot files (bootmgr, ntldr, EFI partitions)

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