Displaying 3 results from an estimated 3 matches for "ebr_fdisk".
2016 Dec 29
2
isohybrid boot from logical partition
Hi,
i think i found the reason for the boot failure in the definition of
Extended Boot Records.
https://en.wikipedia.org/wiki/Extended_boot_record#Values
"Starting sector = relative offset between this EBR sector and the
first sector of the logical partition.
Note: This is often the same value for each EBR on the same hard disk;
usually 63 for Windows XP or older."
So if
2016 Dec 29
0
isohybrid boot from logical partition
...everal years ago indicate that the relative start LBA of logical
partitions is indeed a troublemaker between GRUB and SYSLINUX.
---------------------------------------------------------------------
I created by help of fdisk this layout
Device Boot Start End Sectors Size Id Type
ebr_fdisk.img1 1 16 16 8K 83 Linux
ebr_fdisk.img2 17 2047 2031 1015.5K 5 Extended
ebr_fdisk.img5 64 192 129 64.5K 83 Linux
ebr_fdisk.img6 200 264 65 32.5K 83 Linux
Indeed the EBRs show relative block start addresses.
At block 17, the...
2016 Dec 30
3
isohybrid boot from logical partition
...lative start LBA of logical
> partitions is indeed a troublemaker between GRUB and SYSLINUX.
>
> ---------------------------------------------------------------------
>
> I created by help of fdisk this layout
>
> Device Boot Start End Sectors Size Id Type
> ebr_fdisk.img1 1 16 16 8K 83 Linux
> ebr_fdisk.img2 17 2047 2031 1015.5K 5 Extended
> ebr_fdisk.img5 64 192 129 64.5K 83 Linux
> ebr_fdisk.img6 200 264 65 32.5K 83 Linux
>
> Indeed the EBRs show relative block start addre...