[Bug 1049549] Re: Ubiquity manual partitioning offers to install grub in a way that breaks Windows boot

[Max Vi]

Thanks for your help but unfortunatly it doesn't work,
I end up with:
_____________________________________________________
Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63
     Partition                  Start        End    Size in sectors
 1 * HPFS - NTFS              0   1  1 32604 251  4  523799014

Boot sector
Status: OK

Backup boot sector
Status: Bad

Sectors are not identical.

A valid NTFS Boot sector must be present in order to access
any data; even if the partition is not bootable.


 [  Quit  ]  [  List  ]  [Org. BS ] >[Rebuild BS]  [  Dump  ]
_________________________________________________________

any ideas?

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

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

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  The "Something else" option (= manual partitioning screen) allows the user to change the location where GRUB stage1 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 break Windows boot and MUST be removed:
  - all partitions (eg /dev/sda1 , /dev/sda2...) containing Windows boot files (bootmgr, ntldr). In other words, all partitions detected as "Windows" by os-prober.

  Probably the problem is the same with systems other than Windows, so I
  recommend to remove all partitions detected by os-prober.

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