Cannot find Ubuntu 16.04 in boot menu - Ask Ubuntu

i have windows 7 x64 bits on travelmate p446-m laptop. laptop comes hdd partitioned 2 ntfs partitions around 250 gbytes , 1 hidden partition recovery. installed ubuntu lts 16.04 using flash memory. during installation, re-partitioned second 250 gbytes partition following 3 partitions:

1. 50 gbytes mount root '/' ext4
2. 190 gbytes mount '/home' ext4.
3. a partition swap around 12 gbytes.

i selected place of boot loader whole hard-disk i.e. did not specify partition. after finished installation, not able find ubuntu in boot menu not in boot tab of msconfig in windows. tried boot-repair tool on live ubuntu on flash memory nothing changed.

root@ubuntu:/home/ubuntu# parted --list model: ata wdc wd5000lplx-2 (scsi) disk /dev/sda: 500gb sector size (logical/physical): 512b/4096b partition table: gpt disk flags:   number  start   end    size    file system     name                          flags  1      1049kb  106mb  105mb   fat32           efi system partition          boot, esp  2      106mb   123mb  16.8mb                  microsoft reserved partition  msftres  3      123mb   231gb  231gb   ntfs            basic data partition          msftdata  4      231gb   232gb  524mb   ntfs            basic data partition          hidden, diag  5      232gb   282gb  50.0gb  ext4  7      282gb   453gb  171gb   ext4  8      453gb   464gb  11.0gb  linux-swap(v1)  6      464gb   500gb  36.3gb  ntfs            basic data partition          hidden, diag   model: jetflash ts2gjfv30 (scsi) disk /dev/sdb: 2032mb sector size (logical/physical): 512b/512b partition table: msdos disk flags:   number  start   end     size    type     file system  flags  1      1049kb  2032mb  2031mb  primary  fat32        boot, lba 

here output of sudo efibootmgr -v:

ubuntu@ubuntu:~$ sudo efibootmgr -v bootcurrent: 0002 timeout: 0 seconds bootorder: 2001,0001,2002,2003 boot0000* unknown device:   hd(1,gpt,61f0988b-288d-4d52-b004-c4d38f79d407,0x800,0x32000)/file(\efi\ubuntu\shimx64.efi)rc boot0001* windows boot manager  hd(1,gpt,61f0988b-288d-4d52-b004-c4d38f79d407,0x800,0x32000)/file(\efi\microsoft\boot\bootmgfw.efi)rc boot0002* usb hdd: jetflashts2gjfv30    pciroot(0x0)/pci(0x1d,0x0)/usb(0,0)/usb(3,0)/hd(1,mbr,0x75,0x800,0x3c8800)rc boot0003* unknown device:   hd(1,gpt,61f0988b-288d-4d52-b004-c4d38f79d407,0x800,0x32000)/file(\efi\ubuntu\shimx64.efi)rc boot0004* unknown device:   hd(1,gpt,61f0988b-288d-4d52-b004-c4d38f79d407,0x800,0x32000)/file(\efi\ubuntu\shimx64.efi)rc boot0005* unknown device:   hd(1,gpt,61f0988b-288d-4d52-b004-c4d38f79d407,0x800,0x32000)/file(\efi\ubuntu\shimx64.efi)rc boot2001* efi usb device    rc boot2002* efi dvd/cdrom rc boot2003* efi network   rc 

your partition table looks ok, , efi system partition (esp) has boot loaders both windows , ubuntu. boot repair output, though, lacks information sudo efibootmgr -v, reveals computer's nvram boot manager entries. suspicion firmware defective , forgetting or ignoring these entries. problem crops repeatedly, particularly brands. see, instance:

• uefi settings not persist across reboot
• what should ubuntu dual-boot windows 10 on toshiba laptop?
• dual-boot windows 10 , ubuntu, grub 2 not booting