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I'm kinda new in this and just installed ubuntu 16.04. Before this on the HDD was Windows 10. I put flash drive with Ubuntu and just erased/format whole drive and installed ubuntu.

Now when I switch on this laptop is asking me to choose to start ubuntu or make some memory test.. OS doesn't start right away until I choose something. Is it possible to hide this menu option at boot?

Secondly when I run fdisk -l I see something strange that I don't know what exactly mean..

Disk /dev/sda: 465,8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xbde941be

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048 960641023 960638976 458,1G 83 Linux
/dev/sda2       960643070 976771071  16128002   7,7G  5 Extended
/dev/sda5       960643072 976771071  16128000   7,7G 82 Linux swap / Solaris

Partition 2 does not start on physical sector boundary.

Disk /dev/sdb: 14,9 GiB, 16013942784 bytes, 31277232 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk  identifier: 0x65709045

Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1        2048 31275007 31272960 14,9G  6 FAT16


Disk /dev/mapper/cryptswap1: 7,7 GiB, 8257011712 bytes, 16126976 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes

  1. I don't recognize this: 

    Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1        2048 31275007 31272960 14,9G  6 FAT16

    I don't know why is there since I formatted whole HDD

  2. What is this error means?

      Partition 2 does not start on physical sector boundary.
S.I.
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  • sdb is another device, probably a flash drive. – Pilot6 Jun 27 '16 at 12:01
  • No, I don't have anything like this. Just one mouse plugged in... – S.I. Jun 27 '16 at 12:04
  • Maybe an SD card, etc. It is not a problem. – Pilot6 Jun 27 '16 at 12:06
  • When I start GParted I see only /dev/sda1, /dev/sda2 and /dev/sda5 which is like sub on /dev/sda2 – S.I. Jun 27 '16 at 12:06
  • No, it's brain new laptop and nothing plugged in. GParted doesn't show sdb at all – S.I. Jun 27 '16 at 12:07
  • In gparted you need to choose a disk in the upper right-hand corner. There should be sdb. – Pilot6 Jun 27 '16 at 12:09
  • Ah, my mistake. I see it there now with warning 7.69 GiB of unallocated space within the partition. To grow the file system to fill the partition, select the partition and choose the menu item: Partition --> Check. – S.I. Jun 27 '16 at 12:10

1 Answers1

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"Is it possible to hide this menu option at boot?" Yes, it is. Check this: How to make grub stop appearing every time I boot?.

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