On 06/24/2015 06:24 PM, Ralf Corsepius wrote:
On 06/25/2015 02:07 AM, jd1008 wrote:


On 06/24/2015 05:57 PM, Rick Stevens wrote:
On 06/24/2015 04:25 PM, jd1008 wrote:
Laptop: Dell Latitude E6510.

OS: F20 with all updates

Grub installed on sda.

Power up ,and after bios's internal works, I do not get the grub menu.
All I get is an empty screen with the underscore cursor blinking at
upper left corner.

Reboot.

Press F12 to get the BIOS boot menu.

Select Internal HDD

Boots just fine.

Looks like the BIOS' concept of the primary boot drive is different
than "internal HDD". Check the boot order on the BIOS.
Boot order is
1. CD drive
2. USB drive
3. Internal Drive
4. Network

Presuming this is a real BIOS system (not UEFI), my wild guess would be:

You have a "malconfigured" grub installed in the MBR (/dev/sda) and a "configured" grub installed in /dev/sda<boot-partition>.

Should this reasoning apply, marking /dev/sda<boot-partition> "bootable" (using gparted, fdisk etc.) should help.

Ralf

It IS set to bootable (sda3)
But grub is on sda.

# fdisk -l /dev/sda

Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 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: 0x0004ccd9

Device    Boot      Start        End    Blocks  Id System
/dev/sda1            2048   83888127  41943040   7 HPFS/NTFS/exFAT
/dev/sda2        83888128   84035583     73728   c W95 FAT32 (LBA)
/dev/sda3 *      84035584 1919970735 917967576  83 Linux
/dev/sda4      1919970736 1953525167  16777216  82 Linux swap / Solaris


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