fwupdso you can just do a firmware update directly from the shell.
This is not the case for the T460, which has a bootable ISO, or a Windows installer that ... creates a bootable ISO.
I couldn't find my USB CD/DVD drive so I landed up finding a workaround.
You can't use
fwupd installto install this firmware because it's only distributed in a legacy format with a bootable self-installer, even though the system has a UEFI firmware that's entirely capable of self-updating. In fact, all the bootable installer seems to do is tell the UEFI firmware to self-update using the files it contains.
I suspect it's possible to unpack the image and make a fwupd manifest to install these, but I wasn't willing to take the risk. Instead I turned the CD image into a bootable USB key.
- An up to date full backup of your system because if you break it, you don't get to complain to me!
- A USB flash drive (USB key) you don't mind overwriting
- The ISO9660 image for the firmware updater from Lenovo. Mine was
- In the boot setup menu (F1, UEFI manager / BIOS Setup): Secure Boot disabled and "Boot Mode" set to "Legacy" or to "Both"
You shouldn't actually need to use the backup you just made. But of course you didn't even have to make one because you already know your system is regularly backed up. In fact, you test your backups to make sure they work and are restore-able. Don't you? Yeah, good.
Extract the boot image
The Lenovo-supplied ISO9660 image doesn't appear to contain any files. If you loopback mount it or list its contents with
isoinfoit'll look empty:
$ isoinfo -f -i r06uj66d.iso $
But it isn't really empty. It has an El-Torito HDD-emulation image embedded in it, as you can see with
$ isoinfo -d -i r06uj66d.iso CD-ROM is in ISO 9660 format System id: Volume id: R06ET66U Volume set id: Publisher id: Data preparer id: Application id: NERO BURNING ROM VER 12,5,5,0 Copyright File id: Abstract File id: Bibliographic File id: Volume set size is: 1 Volume set sequence number is: 1 Logical block size is: 2048 Volume size is: 10934 El Torito VD version 1 found, boot catalog is in sector 20 Joliet with UCS level 3 found NO Rock Ridge present Eltorito validation header: Hid 1 Arch 0 (x86) ID 'NERO BURNING ROM VER 12' Key 55 AA Eltorito defaultboot header: Bootid 88 (bootable) Boot media 4 (Hard Disk Emulation) Load segment 7C0 Sys type 6 Nsect 1 Bootoff 1B 27
The image embedded within the ISO at `Bootoff` which is decimal 27 measured in 2048b ISO9660 sectors. In bytes that's:
$ echo $((27 * 2048)) 55296
and the mode is "hard disk emulation", which is handy because a USB key is presented as a hard disk in legacy boot mode. That means the OS on the image won't get confused to find itself on a USB key not a CD (or floppy!).
All we have to do is extract the embedded image and dd it directly onto a USB key.
Extracting it is as simple as
dd'ing from the offset:
$ dd if=r06uj66d.iso of=r06uj66d.img skip=27 bs=2048
... and you have a ready-made USB key image. Sanity-check it:
$ file r06uj66d.img
r06uj66d.img: DOS/MBR boot sector; partition 1 : ID=0x4, active, start-CHS (0x0,1,1), end-CHS (0x14,63,32), startsector 32, 42976 sectors
$ fdisk -l r06uj66d.img
Disk r06uj66d.img: 21.3 MiB, 22337536 bytes, 43628 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
r06uj66d.img1 * 32 43007 42976 21M 4 FAT16 <32M
You can also loopback mount it to inspect it if you like. You do not need to perform the following steps, but can if you want to poke around and see what's inside:
$ sudo losetup -f --show --offset=$((32 * 512)) r06uj66d.img /dev/loop2 $ sudo mkdir -p /mnt/tmp $ sudo mount -o ro /dev/loop2 /mnt/tmp $ ls /mnt/tmp EFI FLASH 'System Volume Information' $ # when you're done $ sudo umount /mnt/tmp $ sudo losetup -d /dev/loop2
Now you're ready to copy it to bootable storage.
(Theoretically you could probably boot into the grub2 command line and boot the image with grub's chainloader, but I wasn't willing to risk that with a firwmare updater. Plus it's a legacy-boot image and my grub2 is UEFI.)
Identify and prepare the USB key
To do this it is vital that you have a USB key connected that has no data of any value to you on it because we're about to erase it.
There are probably handy utilities to make this easier, so if you have one, use it. I did it the manual way.
Find the USB key and unmount all its volume(s). Don't use "Eject" in your file manager as on some systems that tries to actually power-down the USB key or otherwise disconnect it, just unmount the file system(s). I suggest using
lsblkto identify the USB key, e.g.:
$ sudo lsblk --output=NAME,SIZE,MODEL,VENDOR,SERIAL,TYPE,MOUNTPOINT,TRAN,SUBSYSTEMS NAME SIZE MODEL VENDOR SERIAL TYPE MOUNTPOINT TRAN SUBSYSTEMS sda 14.5G XXXXXXXXXXXXXX disk usb block:scsi:usb:pci └─sda1 21M part /run/media/craig/Kmlib block:scsi:usb:pci nvme0n1 238.5G THNSFXXXXXXXX TOSHIBA XXXXXXXXXXXX disk nvme block:nvme:pci ├─nvme0n1p1 200M part /boot/efi nvme block:nvme:pci ├─nvme0n1p2 500M part /boot nvme block:nvme:pci ├─nvme0n1p3 7.8G part [SWAP] nvme block:nvme:pci └─nvme0n1p4 230G part /home nvme block:nvme:pci
Here I only have one device with TRAN (transport) = usb, so that's easy enough. It's a 14.5G USB key, partitioned, with a single partition that's only 21MB - because I'm showing the one I already disk-imaged.
Beware that on many systems
sdamight be your main hard drive so do not blindly copy these instructions.
If in doubt, you can also remove the USB key and re-insert it then examine the output of
dmesgwhich should say something like:
[ 2096.634323] usb-storage 1-2:1.0: USB Mass Storage device detected ... [ 2097.893998] sd 0:0:0:0: [sda] 30310400 512-byte logical blocks: (15.5 GB/14.5 GiB) .... [ 2097.898336] sda: sda1 [ 2097.901194] sd 0:0:0:0: [sda] Attached SCSI removable disk
The device name should match up with what you saw in
Triple-check it doesn't have anything you care about on it now:
Now unmount any file system(s) on the USB key and flush the kernel write buffers, so you don't get the file system trying to write to the USB key at the same time we dd directly to its underlying storage. Check which partitions are mounted using
blockdevoutput from above, and/or the output of the
mountcommand without arguments. Then unmount any/all by specifying the mountpoint path or block-device path to umount as root. Check each mounted volume before unmounting to verify there's nothing on there you want to keep, e.g.
$ ls /run/media/craig/Kmlib
then unmount. In my particular case I needed to:
$ sudo umount /dev/sda1
or (either would've worked):
$ sudo umount /run/media/craig/Kmlib
Finally we flush any write buffers. This shouldn't be needed, but never hurts. The
synccommand produces no output.
Time to erase the USB key. No turning back now.
Overwrite the USB key with the boot image
DO NOT COPY THESE INSTRUCTIONS WITHOUT HAVING READ AND UNDERSTOOD THE ABOVE. YOU MIGHT ERASE YOUR HARD DRIVE AND LOSE ALL YOUR DATA. DO NOT COPY THESE INSTRUCTIONS BLINDLY. DO NOT ASSUME YOUR USB KEY IS AT
/dev/sda. YOU HAVE BEEN WARNED.
Copy the disk image we prepared to the USB key and flush the write buffers:
$ sudo dd if=r06uj66d.img of=/dev/sda conv=dsync status=progress
(If you get an error about the status=progress option just leave it off. If you get an error about the conv=dsync option, leave it off and run "sync" afterwards instead.)
Woo. You have a bootable USB firmware updater.
Boot into the updater
Reboot. Press F12 during boot to get the boot menu. Choose "USB HDD:" from the items list.
It'll boot into the updater. From there follow the instructions.
It's not joking about not removing the power or interrupting the process though. It's truly vital you do this on AC power and with a battery that's charged. Really.