Update firmware of a Crucial SSD with systemd-boot - Leo'...

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Leo Shen · 2019-11-08 · via Leo's Field

OK now we have the update ISO. Let's mount it and have a look. Still, if you don't know how to mount a ISO, here's how:

`1`	`sudo mount -t iso9660 MX300_M0CR070_Firmware_Update.iso /mnt/iso`

Since the firmware is released at 2018, I'm pretty confident that it should support UEFI. And no surprise, it does. We can see our old friend - EFI folder here.

$ cd /mnt/iso
$ ls -al
total 6
drwxr-xr-x 1 root root 2048 Nov 12  2018 .
drwxr-xr-x 4 root root   28 Oct 26 16:50 ..
dr-xr-xr-x 1 root root 2048 Nov 12  2018 boot
dr-xr-xr-x 1 root root 2048 Nov 12  2018 EFI

Okay let's dig deeper… Wait.

$ cat EFI/BOOT/grub/grub.cfg
GRUB_DEFAULT=0
GRUB_TIMEOUT=0
linux /boot/vmlinuz64 libata.allow_tpm=1 quiet base loglevel=3 cde waitusb=10 consoleblank=0 superuser mse-iso rssd-fw-update rssd-fwdir=/opt/firmware
initrd /boot/corepure64.gz
boot

It's just Linux! Booted by GRUB!

Well that's a surprise. From now on it's our routine Linux boot stuff. It seems that it is trying to boot the kernel vmlinuz64 and the payload corepure64.gz from /boot, so let's copy these stuff into our EFI partition.

`1`	`cp -r /mnt/efi/boot /boot`

Then, add a new entry to systemd-boot. Edit /boot/loader/entries/ssd_update.conf:

title Crucial MX300 Firmware Update
linux /Boot/vmlinuz64
initrd /Boot/corepure64.gz
options libata.allow_tpm=1 quiet base loglevel=3 cde waitusb=10 consoleblank=0 superuser mse-iso rssd-fw-update rssd-fwdir=/opt/firmware

That should be all we need.

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