Linux Dualboot installation instructions with existing Windows partition

gistfile1.md

1. Boot into Windows.

2. Using Windows' partition tool Disk Management, resize the Windows partition to create a blank area as large as you desire.

3. Insert your Linux install media.

4. Reboot into your Linux install media.

5. Do the Linux partitioning from your Linux install media.

   • If you want, or think you will ever want, n>4 partitions, make the rightmost partition a LVM, then create other partitions inside that.

   • If you want Windows to access a partition, leave that partition outside the LVM and format it with something Windows-compatible like NTFS.

   • If you make a swap partition, it's perfectly fine to leave it within the LVM

6. Install Linux.

   • It's okay to install Linux to a partition inside the LVM.

7. Test that you can boot into Windows.

   • If you can't, boot into your installed Linux and run update-grub as root, then goto(7)

8. Test that you can still boot into Linux

   • Windows might over-write GRUB with its own boot tools, for some reason.

   • In the event that GRUB is borked:

     1. Boot into the Linux install media

     2. Mount your installed Linux partition

     3. Chroot into the installed Linux partition

     4. Run update-grub

     5. n = n + 1

     6. If n < 4, then exit the chroot, reboot, goto(7); else go googling.

9. Success!