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da się jakoś dopisać do menadżera Windowsowego Linuksa, żeby był na liście wyboru przed startem systemu (tak jak to wcześniej w grubie było).

Boot the system again using either the GParted disk or the Ubuntu or Fedora install disk you downloaded and let’s make a mount point for the FAT32 share partition we created (I prefer using the GParted disk because it boots to a usuable state much faster than the Fedora or Ubuntu Live disk). Open a terminal and enter the following:
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[TD="class: content"]mkdir /mnt/share [/TD]
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Next, let’s mount the correct device to this directory. Recall from the GParted partitioning steps above that the FAT32 partition is located at device /dev/sda6. Note: using the FAT32 partition in this step is optional. You may chose to use another device such as a USB drive. Just make sure to mount the appropriate device. Enter the following:
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[TD="class: content"]mount /dev/sda6 /mnt/share [/TD]
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Write the first 512 bytes of our Linux boot partition to a file and copy that file to our FAT32 partition:
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[TD="class: content"]dd if=/dev/sda3 of=/mnt/share/linux.bin bs=512 count=1[/TD]
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Exit GParted now and reboot to Windows 7. Open the FAT32 partition and you should see the linux.bin file. Copy that file to the root of the Windows boot (active) partition (e.g., C:\). Next, let’s use BCDEdit to add an entry to Windows 7’s BCD store. Administrative privileges are required to use BCDEdit, so navigate to Start->All Programs->Accessories, Right-click on Command Prompt and select “Run as administrator.” Okay, now let’s start by creating an entry for our Linux distribution. Note here that you are free to choose another entry name if desired:
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[TD="class: content"]bcdedit /create /d “Linux” /application BOOTSECTOR[/TD]
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BCDEdit will return an alphanumeric identifier for this entry that I will refer to as {ID} in the remaining steps. You’ll need to replace {ID} by the actual returned identifier. An example of {ID} is {d7294d4e-9837-11de-99ac-f3f3a79e3e93}. Next, let’s specify which partition hosts a copy of the linux.bin file:
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[TD="class: content"]bcdedit /set {ID} device partition=c:[/TD]
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The path to our linux.bin file:
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[TD="class: content"]bcdedit /set {ID} path \linux.bin[/TD]
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An entry to the displayed menu at boot time:
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[TD="class: content"]bcdedit /displayorder {ID} /addlast[/TD]
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and finally, let’s specify how long the menu choices will be displayed:
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[TD="class: content"]bcdedit /timeout 30[/TD]
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That’s it! Now reboot and you will be presented with menu where you can choose to boot to Windows 7 or Linux.

1. Moj dysk z Linuksem to sda3.
2. Wpisałem:

   Kod: Zaznacz cały

   set prefix=(hd0,3) /boot/grub

   
   (wcześniej robiłem tu błąd, bo tak znalazłem na jakiejs stronie i wpisywałem:

   Kod: Zaznacz cały

   set prefix=(hd0,3)/grub)

3. Kod: Zaznacz cały

   set root=(hd0,3)

4. Kod: Zaznacz cały

   insmod normal

5. Kod: Zaznacz cały

   normal

sudo update-grub
sudo grub-install /dev/sda