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I am new in Ubuntu. This is my first time experience.

Installed Ubuntu 20.04 as dual boot; but, when I turn on computer, it directly opens with Ubuntu. There is no Windows 8 option and here is also no grub bootloader option coming up.

How can I fix this problem?

Kevin Bowen
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Shihab hasan
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  • Are you sure you still have Windows installed? – Pilot6 Jun 03 '20 at 17:21
  • If Windows 8 pre-installed it is UEFI, did you install Ubuntu in UEFI boot mode? https://help.ubuntu.com/community/UEFI Also shows Windows 10 screens or similar to Windows 8 https://askubuntu.com/questions/221835/installing-ubuntu-on-a-pre-installed-windows-10-with-uefi – oldfred Jun 03 '20 at 17:21
  • Please [edit] your question and add output of sudo parted -l terminal command. – Pilot6 Jun 03 '20 at 17:23
  • i am sure i have still windows 8 ,in my hard drive . – Shihab hasan Jun 03 '20 at 17:24
  • So post the sudo parted -l and we'll see. – Pilot6 Jun 03 '20 at 17:40
  • Model: ATA ST1000LM048-2E71 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/4096B Partition Table: msdos Disk Flags:

    Number Start End Size Type File system Flags 1 1049kB 107GB 107GB primary ntfs 2 107GB 703GB 596GB extended lba 5 107GB 406GB 298GB logical ntfs 6 406GB 703GB 297GB logical ntfs 3 703GB 704GB 300MB primary fat32 boot, esp 4 704GB 1000GB 297GB primary ext4

     – Shihab hasan Jul 29 '20 at 19:38

1 Answers1

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Open /etc/default/grub for editing (you will probably need to run with sudo for write permission). Edit the following lines:

GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=3

The first line will show the grub menu on boot, which will hopefully have an option for booting to Windows. The GRUB_TIMEOUT parameter is the number of seconds to wait for a selection before using the default. You could adjust this to your liking.

After you make the change in /etc/default/grub, you will have to run update-grub (again, probably with sudo) to apply the changes. Then reboot and make sure the grub menu appears.

If you get the grub menu to appear, but still do not see an entry for Windows, then I suggest you edit your question to reflect this.

afosbenner
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