[Bug 1507505] Re: NVME partition names incorrect; should be nvme0p1, not nvme0n1

[小太]

Changing the title back to reflect the situation.

Note that NVMe devices are named by /dev/nvme[device number]n[namespace number]p[partition number].
This means if you format your NVMe device with at least one partition, you'll end up with at least three devices: /dev/nvme0, /dev/nvme0n1 and /dev/nvme0n1p1

** Summary changed:

- NVME partition names incorrect; should be nvme0p1, not nvme0n1
+ Unable to install GRUB in /dev/nvme

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Title:
  Unable to install GRUB in /dev/nvme

Status in grub-installer:
  New
Status in Linux:
  Unknown
Status in grub-installer package in Ubuntu:
  Triaged

Bug description:
  On T460s, I tried to install the wily daily build,  it could detect
  the nvme partition, at the end of installation, it prompt ' Unable to
  install GRUB in /dev/nvme'

  Oct 19 16:47:01 ubuntu grub-installer: info: Installing grub on '/dev/nvme'
  Oct 19 16:47:01 ubuntu grub-installer: info: grub-install does not support --no-floppy
  Oct 19 16:47:01 ubuntu grub-installer: info: Running chroot /target grub-install  --force "/dev/nvme"
  Oct 19 16:47:01 ubuntu grub-installer: Installing for i386-pc platform.
  Oct 19 16:47:02 ubuntu grub-installer: grub-install: error: cannot find a GRUB drive for /dev/nvme.  Check your device.map.
  Oct 19 16:47:02 ubuntu grub-installer: error: Running 'grub-install  --force "/dev/nvme"' failed.
  Oct 19 16:48:30 ubuntu systemd[1]: Started Session c2 of user ubuntu.

  Why it install to /dev/nvme, while not the /dev/nvme0n1?

  $ sudo grub-install --boot-directory /target/boot/grub /dev/nvme
  Installing for i386-pc platform
  grub-install: error: cannot find a GRUB drive for /dev/nvme.  Check your device.map.

  $ sudo grub-install --boot-directory /target/boot/grub /dev/nvme0
  Installing for i386-pc platform
  grub-install: error: attempt to read or write outside of disk `hostdisk/dev/nvme0'.

  $ sudo grub-install --boot-directory /target/boot/grub /dev/nvme0n1
  Installing for i386-pc platform
  Inatalltion finished. No error reported.

  But even it's no error reported, I still cant' find any grub after
  reboot.

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