Monday, January 16, 2017

problems installing ubutu on western digital netbook hard disks

 you keep getting  the machine firmware is installing in the UEFI mode . And then your ubuntu installation does not boot after install.

ideapad s205 does not have a disable uefi mode in the bios and you need to reflash it . most help says from windows 8 . but i DO NOT have any windows install .

so i got free dos and install it .But it just boots into free does even after installing ubuntu alongside free dos 


 sudo apt-get install p7zip-full
Reading package lists... Done
Building dependency tree      
Reading state information... Done
p7zip-full is already the newest version (9.20.1~dfsg.1-4.2).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

ubuntu-mate@ubuntu-mate:~$
ubuntu-mate@ubuntu-mate:~$ sudo fdisk -l
Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 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




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: 0xad971719

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1              63     96389     96327    47M  6 FAT16
/dev/sda2           98302 976771071 976672770 465.7G  5 Extended
/dev/sda5  *        98304 973412351 973314048 464.1G 83 Linux
/dev/sda6       973414400 976771071   3356672   1.6G 82 Linux swap / Solaris

Partition 1 does not start on physical sector boundary.
Partition 2 does not start on physical sector boundary.



Disk /dev/sdb: 3.7 GiB, 4004511744 bytes, 7821312 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: 0x15651abb

Device     Boot   Start     End Sectors  Size Id Type
/dev/sdb1  *          0 3247999 3248000  1.6G  0 Empty
/dev/sdb2       3193448 3198183    4736  2.3M ef EFI (FAT-12/16/32)


your hard disk has Advanced Format 4096-byte sectors to which the partition is not perfectly aligned. fix this issue you must backup your data and then either:
  1. Resize the erroneously sized partition to the proper size.
  2. Delete the erroneously sized partition and create a new partition of the proper size.

http://askubuntu.com/questions/156994/partition-does-not-start-on-physical-sector-boundary


The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.


after adding 1 mb before each partition
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: 0xad971719

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1            4096     96255     92160    45M  6 FAT16
/dev/sda2           98302 976771071 976672770 465.7G  5 Extended
/dev/sda5  *       100352 973412351 973312000 464.1G 83 Linux
/dev/sda6       973414400 976771071   3356672   1.6G 82 Linux swap / Solaris

Partition 2 does not start on physical sector boundary.



Disk /dev/sdb: 3.7 GiB, 4004511744 bytes, 7821312 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: 0x15651abb

Device     Boot   Start     End Sectors  Size Id Type
/dev/sdb1  *          0 3247999 3248000  1.6G  0 Empty
/dev/sdb2       3193448 3198183    4736  2.3M ef EFI (FAT-12/16/32)





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