Code: Select all
sudo dd if=/dev/sda bs=512 count=1 | xxd
If it isn't there then you can try installing GRUB:
Code: Select all
sudo grub-install --target=i386-pc /dev/sda
Code: Select all
sudo dd if=/dev/sda bs=512 count=1 | xxd
Code: Select all
sudo grub-install --target=i386-pc /dev/sda
Code: Select all
luis@mx-laptop:~$ sudo dd if=/dev/sda bs=512 count=1|xxd
[sudo] password for luis:
1+0 records in
1+0 records out
00000000: eb63 90d0 bc00 7c8e c08e d8be 007c bf00 .c....|......|..
00000010: 06b9 0002 fcf3 a450 681c 06cb fbb9 0400 .......Ph.......
00000020: bdbe 0780 7e00 007c 0b0f 850e 0183 c510 ....~..|........
00000030: e2f1 cd18 8856 0055 c646 1105 c646 1000 .....V.U.F...F..
00000040: b441 bbaa 55cd 135d 720f 81fb 55aa 7509 .A..U..]r...U.u.
00000050: f7c1 0100 7403 fe46 1066 0080 0100 0000 ....t..F.f......
00000060: 0000 0000 fffa 9090 f6c2 8074 05f6 c270 ...........t...p
00000070: 7402 b280 ea79 7c00 0031 c08e d88e d0bc t....y|..1......
00000080: 0020 fba0 647c 3cff 7402 88c2 52bb 1704 . ..d|<.t...R...
512 bytes copied, 0.0287371 s, 17.8 kB/s00000090: f607 0374 06be 887d e817 01be 057c b441 ...t...}.....|.A
000000a0: bbaa 55cd 135a 5272 3d81 fb55 aa75 3783 ..U..ZRr=..U.u7.
000000b0: e101 7432 31c0 8944 0440 8844 ff89 4402 ..t21..D.@.D..D.
000000c0: c704 1000 668b 1e5c 7c66 895c 0866 8b1e ....f..\|f.\.f..
000000d0: 607c 6689 5c0c c744 0600 70b4 42cd 1372 `|f.\..D..p.B..r
000000e0: 05bb 0070 eb76 b408 cd13 730d 5a84 d20f ...p.v....s.Z...
000000f0: 83d0 00be 937d e982 0066 0fb6 c688 64ff .....}...f....d.
00000100: 4066 8944 040f b6d1 c1e2 0288 e888 f440 @f.D...........@
00000110: 8944 080f b6c2 c0e8 0266 8904 66a1 607c .D.......f..f.`|
00000120: 6609 c075 4e66 a15c 7c66 31d2 66f7 3488 f..uNf.\|f1.f.4.
00000130: d131 d266 f774 043b 4408 7d37 fec1 88c5 .1.f.t.;D.}7....
00000140: 30c0 c1e8 0208 c188 d05a 88c6 bb00 708e 0........Z....p.
00000150: c331 dbb8 0102 cd13 721e 8cc3 601e b900 .1......r...`...
00000160: 018e db31 f6bf 0080 8ec6 fcf3 a51f 61ff ...1..........a.
00000170: 265a 7cbe 8e7d eb03 be9d 7de8 3400 bea2 &Z|..}....}.4...
00000180: 7de8 2e00 cd18 ebfe 4752 5542 2000 4765 }.......GRUB .Ge
00000190: 6f6d 0048 6172 6420 4469 736b 0052 6561 om.Hard Disk.Rea
000001a0: 6400 2045 7272 6f72 0d0a 00bb 0100 b40e d. Error........
000001b0: cd10 ac3c 0075 f4c3 daad da0a 0000 0020 ...<.u.........
000001c0: 2100 07df 130c 0008 0000 0020 0300 00df !.......... ....
000001d0: 140c 07fe ffff 0028 0300 2a4f 7811 00fe .......(..*Ox...
000001e0: ffff 05fe ffff fe77 7b11 02e0 bc28 0000 .......w{....(..
000001f0: 0000 0000 0000 0000 0000 0000 0000e 55aa ..............U.
That's not an error, it's just a message in the hexcode of the MBR that confirms the presence of the GRUB bootloader.
Well, you found a BIOS bug.luishector wrote: ↑Wed May 15, 2019 2:25 pm AFAIK it was changing the boot flag on SDA1 is what fixed things. Should I remove grub from the PBR?