Question about which tools to use, bugs, the best way to implement a function, etc should go here. Don't forget to see if your question is answered in the wiki first! When in doubt post here.
mikegonta wrote:A simple rearrangement of yourext2_hd.asm costs only 5 extra bytes (out of the 25 spare bytes that you have) to implement a self referencing MBR.
To follow my conclusions, you need a BPB in there too. Plus, my ext2 code is still incomplete, it needs a little bit more. Anyway, you get the idea.
BenLunt wrote:I created a UEFI partition type boot and changed the "Insyde" machine back to UEFI. It booted my USB Thumb Drive until the point it said that my loader is not certified. Caught by the TPM (Trusted Platform Module).
You created a partition? I wanted to know what it does when the disk isn't partitioned at all.
No. I did not try that. However, since it will have a valid MBR and Partition Table, I can pretty much guarantee that it will at least see it and add it to the boot options.
Octocontrabass wrote:
BenLunt wrote:As for zeroing out the Thumb Drive and seeing if WinXP will partition it, that's a negative. WinXP sees the whole thing as a removable media device and a single partition containing the whole device capacity.
Diskpart's clean command doesn't zero the disk, only the partition table. It also sets the 0xAA55 signature if that's not already present. I don't know if that makes a difference to XP, but it does to 7.
I completely zerod out the whole drive. I didn't leave a 0xAA55 at offset 511. Something to try.
Caught by the TPM (Trusted Platform Module).
