You normally don't want to actually 'know' what is inside (or access) the bootcatalog, but if you really-really want to, this (seemingly unrelated) thread might be of interest to you: iso you have has different location (or extents).Īnd of course, if your version is Windows PE based it will be completely different. The extent is determined by the LBA addresses in the. There is NO 'extraction' of anything, a loopback device is 'hooked' to a sectors extent. Its unclear, why boot images extracted by ISOBuster were different from those extracted by UltraISO from the same ISO? As well, how an average user can derive similar grub.cfg menu section - based on what miracle vision? Any background explanation or more generalized logical approach would be handy.Īlso, how GOP-only HW support plays into this? Edited Augby zamarac I couldn't also mount any *.img files from Floppy Image written on the ISO's CD track due to unknown *.img filesystem. That didn't work for me - couldn't find dat8.dat and dat9.dat files in Boot.bif image extracted by UltraISO from the mounted ATIH2014 ISO boot sector. I found one example of booting seemingly WinPE-based UEFI ATIH2014 (release unknown) by Grub2. But how to boot them on UEFI PC, especially without Legacy CSM Mode, since Grub4DOS doesn't support UEFI? Taking a popular Acronis True Image Home (ATIH2014) ISO as an example (either Linux or WinPE 5.0 based, or better BOTH), can someone explain, how to boot an ISO on UEFI Windows 8.1 PC? On a BIOS PC, most folks use Grub4DOS to boot ISO images.

How to launch acronis boot cd on a uefi