search for: convert_between_mbr_and_gpt

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

...-------------------------------------------------- Another approach - as mentioned meanwhile by Didier Spaier - would be to convert the disk partitioning from MBR to GPT. The task is not too exotic ... Microsoft has docs ... our friendly neighbors too: https://wiki.archlinux.org/index.php/Fdisk#Convert_between_MBR_and_GPT mentions sgdisk with the important warning that you need a few unclaimed blocks at the end of the disk device. "GPT stores a secondary table at the end of disk. [...]" Before starting this endeavor, one should test by some USB stick whether the isohybrid --partok MBR is working in GPT...

...----------------- > > Another approach - as mentioned meanwhile by Didier Spaier - would be to > convert the disk partitioning from MBR to GPT. > > The task is not too exotic ... Microsoft has docs ... our friendly neighbors > too: > https://wiki.archlinux.org/index.php/Fdisk#Convert_between_MBR_and_GPT > mentions sgdisk with the important warning that you need a few unclaimed > blocks at the end of the disk device. > "GPT stores a secondary table at the end of disk. [...]" > > Before starting this endeavor, one should test by some USB stick whether > the isohybrid --...