Repair boot fail after update -- Newbie

Can I repair BIOS boot fail after update with this command?

grub-install /dev/sda

This wiki document has just been revised - and is up-to-date.

Boot a live ISO and run in a terminal window

sudo manjaro-chroot -a

(enter 1 if only one line is offered)

Then run

inxi -Fazy
parted -l
efibootmgr -v
test -d /sys/firmware/efi && echo efi || echo bios

and post the result here.

[manjaro@manjaro ~]$ sudo manjaro-chroot -a
==> Mounting (ManjaroLinux) [/dev/sda1]
–> mount: [/mnt]
–> mount: [/mnt/home/chuck/usb-drive/Timeshift]
mount: /mnt/home/chuck/usb-drive/Timeshift: special device /dev/disk/by-uuid/fdb328c5-e90e-4181-9367-daeffc2f9858 does not exist.
mount: /mnt/etc/resolv.conf: mount point is a symbolic link to nowhere.
[manjaro /]# inxi -Fazy
12Kernel 5.6.7-1-MANJARO x86_64 12bits 64 12compiler gcc 12v 9.3.0
12parameters BOOT_IMAGE=/boot/vmlinuz-x86_64 lang=en_US keytable=us tz=UTC
driver=free nouveau.modeset=1 i915.modeset=1 radeon.modeset=1
misobasedir=manjaro misolabel=MANJARO_XFCE_200 quiet systemd.show_status=1
apparmor=1 security=apparmor
12Desktop Xfce 12info xfce4-panel 12wm xfwm4 12dm N/A 12Distro Manjaro Linux
12Type Desktop 12Mobo ASUSTeK 12model P6T SE 12v Rev 1.xx 12serial
12BIOS American Megatrends 12v 0805 12date 02/24/2010
12Topology Quad Core 12model Intel Core i7 930 12socket LGA1366 12bits 64
12type MT MCP 12arch Nehalem 12family 6 12model-id 1A (26) 12stepping 5 12microcode 1D
12L1 cache 256 KiB 12L2 cache 8192 KiB 12L3 cache 8192 KiB
12flags lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 12bogomips 44916
12Speed 1604 MHz 12min/max 1600/2801 MHz 12base/boost 2800/2800 12boost enabled
12volts 1.2 V 12ext-clock 133 MHz 12Core speeds (MHz) 121 1604 122 1603 123 1604 124 1604
125 1604 126 1603 127 1604 128 1604
12Vulnerabilities 12Type itlb_multihit 12status KVM: Split huge pages
12Type l1tf
12mitigation PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
12Type mds
12status Vulnerable: Clear CPU buffers attempted, no microcode; SMT vulnerable
12Type meltdown 12mitigation PTI
12Type spec_store_bypass
12mitigation Speculative Store Bypass disabled via prctl and seccomp
12Type spectre_v1
12mitigation usercopy/swapgs barriers and __user pointer sanitization
12Type spectre_v2 12mitigation Full generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: conditional, RSB filling
12Type tsx_async_abort 12status Not affected
12Device-1 AMD Redwood XT [Radeon HD 5670/5690/5730]
12vendor Hightech Information System 12driver radeon 12v kernel 12bus ID 02:00.0
12chip ID 1002:68d8
12Display 12server 1.20.8 12driver ati,radeon 12unloaded modesetting
12alternate fbdev,vesa
12Message Advanced graphics data unavailable for root.
12Device-1 Intel 82801JI HD Audio 12vendor ASUSTeK 12driver snd_hda_intel 12v kernel
12bus ID 00:1b.0 12chip ID 8086:3a3e
12Device-2 AMD Redwood HDMI Audio [Radeon HD 5000 Series]
12vendor Hightech Information System 12driver snd_hda_intel 12v kernel
12bus ID 02:00.1 12chip ID 1002:aa60
12Sound Server ALSA 12v k5.6.7-1-MANJARO
12Device-1 Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
12vendor ASUSTeK M3A78 Series 12driver r8169 12v kernel 12port d800 12bus ID 06:00.0
12chip ID 10ec:8168
12IF enp6s0 12state up 12speed 1000 Mbps 12duplex full 12mac
12Device-2 Realtek RTL-8185 IEEE 802.11a/b/g Wireless LAN
12vendor Abocom Systems 12driver rtl818x_pci 12v kernel 12port e800 12bus ID 08:00.0
12chip ID 10ec:8185
12IF wlp8s0 12state up 12mac
12Local Storage 12total 611.08 GiB 12used 347.82 GiB (56.9%)
12SMART Message Required tool smartctl not installed. Check --recommends
12ID-1 /dev/sda 12vendor Western Digital 12model WD6400AAKS-22A7B2 12size 596.17 GiB
12block size 12physical 512 B 12logical 512 B 12speed 3.0 Gb/s 12serial
12rev 3B01
12ID-2 /dev/sdf 12type USB 12vendor SanDisk 12model Cruzer Glide 12size 14.91 GiB
12block size 12physical 512 B 12logical 512 B 12serial 12rev 2.01
12ID-1 / 12raw size 596.17 GiB 12size 585.81 GiB (98.26%) 12used 347.82 GiB (59.4%)
12fs ext4 12block size 4096 B 12dev /dev/sda1
12Alert No Swap data was found.
12System Temperatures 12cpu 46.0 C 12mobo N/A 12gpu radeon 12temp 45 C
12Fan Speeds (RPM) N/A 12gpu radeon 12fan 0
12Processes 246 12Uptime 1h 51m 12Memory 11.69 GiB 12used 1.35 GiB (11.6%)
12Init systemd 12v 246 12Compilers 12gcc 10.2.0 12Packages 12pacman 1153 12lib 345
12flatpak 0 12Client Unknown Client: systemd 12inxi 3.1.05
[manjaro /]# parted -l
Model: ATA WDC WD6400AAKS-2 (scsi)
Disk /dev/sda: 640GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 640GB 640GB primary ext4 boot

Model: SanDisk Cruzer Glide (scsi)
Disk /dev/sdf: 16.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
2 2815MB 2819MB 4194kB primary esp

[manjaro /]# efibootmgr -v
EFI variables are not supported on this system.
[manjaro /]# test -d /sys/firmware/efi && echo efi || echo bios
[manjaro /]# exit