Eric Auer schrieb: >>>> sys can write the FreeDOS bootsector into a file. Today I recognized >>>> that my freedos.bin working on one harddisk did not work on another >>>> harddisk after a simple copy... > >>> ... The DOS boot sector must contain information about >>> properties of your FAT filesystem and harddisk to stay >>> compatible. As you said, you made it for ONE disk but >>> implanted it on ANOTHER disk, so you forced it to have >>> wrong information. > > Note that tools like scandisk and dosfsck etc might also > notice that you broke the filesystem by transplanting the > boot sector. Some operating systems might be able to > recover from that, others not. I assume if you install > grub4dos grldr, the boot sector which loads it - unless > it is the mbr - will also have to depend on the FAT file > system it is part of. You can probably try transplanting > grub bootSECTORS to understand this problem :-). > >> But grldr (grub4dos) is just a single file >> and able to chainboot kernel.sys on any harddisk. > > So is kernel.sys, and able to load any config.sys > on any harddisk... They are both not boot sectors.
kernel.sys is not a generic bootable binary such as grldr, ntldr or memtest. FreeDOS has none generic bootable binary. You can do: MBR (any you want, made by grub or grub4dos or XP, the MBR is the only non-generic part) -> boot grldr (generic bootable binary) -> boot kernel.sys (grldr has special support to boot kernel.sys, not working for drbio.sys). And you can do: MBR (any you want, made by grub or grub4dos or XP, the MBR is the ONLY non-generic part) -> boot ntldr (generic bootable binary) -> boot grldr (generic bootable binary) -> boot kernel.sys (grldr has special support to boot kernel.sys, not working for drbio.sys). Also you can do: MBR (any you want, made by grub or grub4dos or XP, MBR AND freedos.bin are non-generic) -> ntldr (generic bootable binary) -> [1]freedos.bin (NON-generic bootable binary)[/1] -> kernel.sys You can replace [1] with grldr (generic bootable binary) and remove the non-generic freedos.bin this way. generic-freedos.bin is basically only grldr without the features of a bootmanager, simply booting kernel.sys without user input. This generic bootsector file feature request is ONLY a file, it's NOT meant to be written into volume boot record. >> - you can start it with an initial program loader in MBR > > Which also has do differ for different harddisks. Yes, the only -really needed- non-generic part. > >> - either grub4dos's own IPL, > > Bootsector, I assume? IPL = initial program loader, the bootcode inside MBR > That will also differ for > different harddisks / partitions... At no point I was talking about bootsector in real harddisk, ONLY harddisk as generic file. >> - or you can even rename grldr to ntldr and use >> XP's default IPL/MBR > > The XP boot sector depends on your harddisk and > partition, too. The XP boot sector is not needed as ntldr is a generic bootable binary. >> - or you can use boot.ini to start it > > Then you load it AFTER something which already > did depend on your harddisk and partition. Yes, but just ONE thing is non-generic, not two. >> A generic FreeDOS boot.bin would just need to >> to the same like grldr + removing the advanced >> features such as the bootmenu. > > You seem to confuse grldr and kernel.sys with a > boot sector which also is part of FAT metadata ;-) No, like said, I was only asking for a generic bootable binary to start kernel.sys. Like again said, only a stripped down version of grldr. > > Eric -mr ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
