XPost: uk.comp.os.linux   
   From: theom+news@chiark.greenend.org.uk   
      
   In uk.comp.os.linux Java Jive  wrote:   
   > Problem as per subject.  I have a laptop triple booting into Ubuntu 22,   
   > Windows 7, & Windows 10.  GRUB has the correct settings to remember the   
   > last boot choice and correctly does so for Ubuntu & Windows 10, but, if   
   > I choose Windows 7, at the next boot it offers Windows 10 as the   
   > default, not Windows 7.  All I can find online is many different   
   > explanations for how to set up dual-booting and have it remember the   
   > last choice, not what to do if for some reason this doesn't work.   
      
   I have very limited experience of dual booting Windows, but AIUI there are   
   two ways you can do it:   
      
   1.  Install every Windows on a separate drive.  Here each drive has its own   
   Windows bootloader.  You can select which one to boot from in BIOS.   
   Alternatively, in Grub, you 'chainload' the Windows bootloader from a   
   specific drive, so you can pick between Windows installs   
      
   2.  Install several Windows on the same drive, sharing a Windows bootloader.   
   Here you boot Grub, select you want to 'chainload' the Windows bootloader,   
   then you use the Windows bootloader to select which OS to boot.  In this   
   case Grub doesn't know which Windows is selected - Windows will probably   
   remember the setting from last time or as configured from Windows.   
      
   So it's possible you need to explore how Windows lets you configure that.   
   It's also possible you have Grub entries for Windows 7 and 10 which both   
   point to the same thing (ie they both chainload Windows which remembers from   
   last time, not the setting from GRUB).  There may be a way to tell Grub to   
   chainload a bootloader in a different partition, I'm not sure.   
      
   At least, that's my understanding of classic BIOS/MBR bootloaders.  I think   
   UEFI is different - I haven't so much experience with Windows on that.   
      
   > [In case it matters, but I don't think it does, this laptop is a Dell   
   > Precision M6700 which I bought recently because the video card in my   
   > best old Dell Precision M6300 died, which is the default manner for   
   > those PCs to die  -  even though this new one also has a good 17"   
   > screen, it's wider and shorter than the old one, which I preferred.   
   > There are a couple of over-priced video cards on eBay for nearly the   
   > same sort of price as you could get a working machine of the same model,   
   > but it's just not worth spending that sort of money on such an old   
   > machine. Sniff!]   
      
   It does matter.  The M6700 is an Ivy Bridge machine so that's probably   
   classic BIOS rather than UEFI.   
      
   Theo   
      
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