Win7 bootloader disappered after Manjaro installation on side partition

Hi, I installed Manjaro on a partition occupied by an old linux distro alongside win7 on same ssd.

At reboot grub/bootloader disappears.

Only “Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key” showed.

What can I do?

Boot from an live manjaro to proceed

then:

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Thank you andreas85, here the info you required:

  Kernel: 5.15.28-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-x86_64 lang=en_US keytable=us tz=UTC
    misobasedir=manjaro misolabel=MANJARO_KDE_2125 quiet systemd.show_status=1
    apparmor=1 security=apparmor driver=free nouveau.modeset=1 i915.modeset=1
    radeon.modeset=1
  Desktop: KDE Plasma 5.24.3 tk: Qt 5.15.3 wm: kwin_x11 vt: 1 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop Mobo: ASUSTeK model: P6T v: Rev 1.xx
    serial: <superuser required> BIOS: American Megatrends v: 1408
    date: 09/21/2010
Battery:
  Message: No system battery data found. Is one present?
Memory:
  RAM: total: 5.78 GiB used: 2.44 GiB (42.1%)
  RAM Report:
    permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i7 920 bits: 64 type: MT MCP arch: Nehalem family: 6
    model-id: 0x1A (26) stepping: 5 microcode: 0x1D
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 1603 high: 1604 min/max: 1600/2668 boost: enabled
    scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 1604 2: 1604
    3: 1604 4: 1604 5: 1604 6: 1603 7: 1604 8: 1604 bogomips: 42776
  Flags: acpi aperfmperf apic arch_perfmon bts clflush cmov constant_tsc
    cpuid cx16 cx8 de ds_cpl dtes64 dtherm dts ept est flexpriority flush_l1d
    fpu fxsr ht ibpb ibrs ida lahf_lm lm mca mce mmx monitor msr mtrr
    nonstop_tsc nopl nx pae pat pbe pdcm pebs pge pni popcnt pse pse36 pti
    rdtscp rep_good sep ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2
    tpr_shadow tsc vme vmx vnmi vpid xtopology xtpr
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
  Type: mds
    status: Vulnerable: Clear CPU buffers attempted, no microcode; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl and seccomp
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: conditional, RSB filling
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: AMD Cypress XT [Radeon HD 5870] vendor: XFX Pine driver: radeon
    v: kernel pcie: gen: 2 speed: 5 GT/s lanes: 16 ports: active: HDMI-A-1
    empty: DP-1,DVI-I-1,DVI-I-2 bus-ID: 02:00.0 chip-ID: 1002:6898
    class-ID: 0300
  Display: x11 server: X.Org v: 1.21.1.3 compositor: kwin_x11 driver: X:
    loaded: ati,radeon unloaded: modesetting alternate: fbdev,vesa gpu: radeon
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
    s-diag: 582mm (22.9")
  Monitor-1: HDMI-0 mapped: HDMI-A-1 model: Asus VX238 serial: <filter>
    built: 2015 res: 1920x1080 hz: 60 dpi: 96 gamma: 1.2
    size: 510x290mm (20.1x11.4") diag: 587mm (23.1") ratio: 16:9 modes:
    max: 1920x1080 min: 720x400
  OpenGL: renderer: AMD CYPRESS (DRM 2.50.0 / 5.15.28-1-MANJARO LLVM 13.0.1)
    v: 4.3 Mesa 21.3.7 compat-v: 3.1 direct render: Yes
Audio:
  Device-1: Intel 82801JI HD Audio vendor: ASUSTeK driver: snd_hda_intel
    v: kernel bus-ID: 00:1b.0 chip-ID: 8086:3a3e class-ID: 0403
  Device-2: AMD Cypress HDMI Audio [Radeon HD 5830/5850/5870 / 6850/6870
  Rebrand]
    vendor: XFX Pine driver: snd_hda_intel v: kernel pcie: gen: 2 speed: 5 GT/s
    lanes: 16 bus-ID: 02:00.1 chip-ID: 1002:aa50 class-ID: 0403
  Sound Server-1: ALSA v: k5.15.28-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.20 running: no
  Sound Server-3: PulseAudio v: 15.0 running: yes
  Sound Server-4: PipeWire v: 0.3.48 running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: ASUSTeK M3A78 Series driver: r8169 v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 port: e800 bus-ID: 06:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp6s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  WAN IP: <filter>
Bluetooth:
  Message: No bluetooth data found.
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 247.44 GiB used: 0 KiB (0.0%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 850 EVO 250GB
    size: 232.89 GiB block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s
    type: SSD serial: <filter> rev: 2B6Q scheme: MBR
  ID-2: /dev/sdb maj-min: 8:16 type: USB vendor: Verbatim model: STORE N GO
    size: 14.55 GiB block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s
    type: N/A serial: <filter> rev: 1100 scheme: MBR
  SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure?
  Floppy-1: /dev/fd0
Partition:
  Message: No partition data found.
Swap:
  Alert: No swap data was found.
Unmounted:
  ID-1: /dev/sda1 maj-min: 8:1 size: 100 MiB fs: ntfs label: System Reserved
    uuid: CED2333CD233285B
  ID-2: /dev/sda2 maj-min: 8:2 size: 211.93 GiB fs: ntfs label: N/A
    uuid: 223E347E3E344D53
  ID-3: /dev/sda3 maj-min: 8:3 size: 1 KiB fs: <superuser required>
    label: N/A uuid: N/A
  ID-4: /dev/sda5 maj-min: 8:5 size: 20.86 GiB fs: ext4 label: N/A
    uuid: 0b9e232b-cafd-4f39-b0da-9ddf22172089
  ID-5: /dev/sdb1 maj-min: 8:17 size: 3.54 GiB fs: iso9660
  ID-6: /dev/sdb2 maj-min: 8:18 size: 4 MiB fs: vfat label: MISO_EFI
    uuid: EAE6-38D6
USB:
  Hub-1: 1-0:1 info: Full speed or root hub ports: 6 rev: 2.0 speed: 480 Mb/s
    chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 2-0:1 info: Full speed or root hub ports: 6 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-3: 2-5:2 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s
    power: 100mA chip-ID: 05e3:0608 class-ID: 0900
  Device-1: 2-5.1:4 info: MosArt 2.4G Keyboard Mouse type: Keyboard,Mouse
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 12 Mb/s
    power: 100mA chip-ID: 062a:5918 class-ID: 0301
  Hub-4: 2-5.3:5 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s
    power: 100mA chip-ID: 05e3:0608 class-ID: 0900
  Device-1: 2-5.3.1:8 info: Holtek Keyboard LKS02 type: Keyboard,HID
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s
    power: 100mA chip-ID: 04d9:1702 class-ID: 0300
  Device-2: 2-5.3.2:9 info: Microsoft Xbox360 Controller
    type: <vendor specific> driver: xpad interfaces: 4 rev: 2.0 speed: 12 Mb/s
    power: 500mA chip-ID: 045e:028e class-ID: ff00 serial: <filter>
  Device-3: 2-6:3 info: Verbatim Flash Drive type: Mass Storage
    driver: usb-storage interfaces: 1 rev: 2.0 speed: 480 Mb/s power: 500mA
    chip-ID: 18a5:0302 class-ID: 0806 serial: <filter>
  Hub-5: 3-0:1 info: Full speed or root hub ports: 2 rev: 1.1 speed: 12 Mb/s
    chip-ID: 1d6b:0001 class-ID: 0900
  Hub-6: 4-0:1 info: Full speed or root hub ports: 2 rev: 1.1 speed: 12 Mb/s
    chip-ID: 1d6b:0001 class-ID: 0900
  Hub-7: 5-0:1 info: Full speed or root hub ports: 2 rev: 1.1 speed: 12 Mb/s
    chip-ID: 1d6b:0001 class-ID: 0900
  Hub-8: 6-0:1 info: Full speed or root hub ports: 2 rev: 1.1 speed: 12 Mb/s
    chip-ID: 1d6b:0001 class-ID: 0900
  Hub-9: 7-0:1 info: Full speed or root hub ports: 2 rev: 1.1 speed: 12 Mb/s
    chip-ID: 1d6b:0001 class-ID: 0900
  Hub-10: 8-0:1 info: Full speed or root hub ports: 2 rev: 1.1
    speed: 12 Mb/s chip-ID: 1d6b:0001 class-ID: 0900
Sensors:
  System Temperatures: cpu: 35.0 C mobo: 37.0 C gpu: radeon temp: 41.5 C
  Fan Speeds (RPM): cpu: 1962 psu: 0 case-1: 0 case-2: 0
  Power: 12v: 12.14 5v: N/A 3.3v: 3.28 vbat: N/A
Info:
  Processes: 241 Uptime: 34m wakeups: 0 Init: systemd v: 250 tool: systemctl
  Compilers: gcc: 11.2.0 clang: 13.0.1 Packages: pacman: 1241 lib: 334
  flatpak: 0 Shell: Zsh v: 5.8.1 default: Bash v: 5.1.16 running-in: konsole
  inxi: 3.3.13

This is a bios / mbr install.

This is out of my comfort zone :man_shrugging:

Thank you anyway. I’ll wait for someone.