Some questions about using Grub to make a multi-boot CD? zzz - China DOS Union Forum

1. Does Grub support multiple floppy disk images img with non-standard capacities? (Is 2.88M standard capacity supported?)

2. Does Grub support directly mapping ISO image files? If not, then how to boot an ISO image?

3. Then how to write the menu.lst format well? Not very familiar, can someone help give an example? Does it need to map, and must it map to a non-existent hard disk hd? If mapping to an installed hard disk (such as hd0), after successful booting, can the original hd0 actually be accessed normally?

4. What are the points to note when burning with Nero? For example, select CD-Rom (boot), what to use for the boot file, do we need no simulation, joliet, iso9660....?

3ks!

1. Yes, it supports emulation of floppy disk images of any specifications and sizes. Of course, the standard 2.88M is supported.

2. The Chinese version developed by Gandalf can support booting ISO image files, but it is not implemented directly by map. Currently, it seems that support is only provided for CD-ROMs in no-emulation mode.

3. Regarding the first question, there were detailed introductions about the construction of command sequences before. You can also see it from the README, and there are also articles on the Internet that you can refer to. Search more. Here is an additional point: if you use map (...)/MY_IMG (fd0) to emulate a floppy disk, the real floppy disk is shielded. But this is controllable. You can access the real floppy disk by using two map commands at the same time:

map --mem (hd0,0)/floppy.img (fd0)
map (fd0) (fd1)
map --floppies=2
map ---hook
chainloader (fd0)+1
rootnoverify (fd0)
boot

In this way, you can access two floppy disks at the same time. (fd0) is the virtual floppy disk, and (fd1) is your real floppy disk.

The principle for the hard disk is similar, and it will not be repeated.

4. Irrelevant to GRUB, cannot answer. If you want to install GRUB to CDROM, there are two or three methods: one method is to use GRLDR with nosimulation mode; another method is to use stage2_eltorito with no simulation mode; another method is to use the ordinary floppy disk emulation mode, and use the boot floppy disk containing GRUB as the boot image of CDROM.

：:）Thanks, friend!

1. <Pass>；2. ISOEmu can support booting from virtual iso files; the Chinese localized version of Grub does not have this function; 3. For the use and editing of menu.lst, you can consider using WinGrub/GMEditoR to edit; 4. Burn with Nero, use the non-emulation method, and the boot file can be downloaded here: http://sysoft.zdwx.com/forum/viewthread.php?tid=41&fpage=1

Does it support floppy disks of any specifications and any sizes? Why doesn't the grub_for_dos-0.4.1pre19.tar.gz (which is also the latest version I downloaded) support 2.88M floppy disks?

Also, may I ask: fdo, hd0, etc. refer to floppy disks and hard disks respectively. What is the name for the CD-ROM? For example, if I want to boot from the CD-ROM, how to write it?

Floor1　预言家	Posted 2005-05-22 00:00
初级用户　Posts 10　Credits 142
1. Does Grub support multiple floppy disk images img with non-standard capacities? (Is 2.88M standard capacity supported?) 2. Does Grub support directly mapping ISO image files? If not, then how to boot an ISO image? 3. Then how to write the menu.lst format well? Not very familiar, can someone help give an example? Does it need to map, and must it map to a non-existent hard disk hd? If mapping to an installed hard disk (such as hd0), after successful booting, can the original hd0 actually be accessed normally? 4. What are the points to note when burning with Nero? For example, select CD-Rom (boot), what to use for the boot file, do we need no simulation, joliet, iso9660....? 3ks!

Floor2　不点	Posted 2005-05-26 00:00
银牌会员　Posts 1,115　Credits 2,491
1. Yes, it supports emulation of floppy disk images of any specifications and sizes. Of course, the standard 2.88M is supported. 2. The Chinese version developed by Gandalf can support booting ISO image files, but it is not implemented directly by map. Currently, it seems that support is only provided for CD-ROMs in no-emulation mode. 3. Regarding the first question, there were detailed introductions about the construction of command sequences before. You can also see it from the README, and there are also articles on the Internet that you can refer to. Search more. Here is an additional point: if you use map (...)/MY_IMG (fd0) to emulate a floppy disk, the real floppy disk is shielded. But this is controllable. You can access the real floppy disk by using two map commands at the same time: map --mem (hd0,0)/floppy.img (fd0) map (fd0) (fd1) map --floppies=2 map ---hook chainloader (fd0)+1 rootnoverify (fd0) boot In this way, you can access two floppy disks at the same time. (fd0) is the virtual floppy disk, and (fd1) is your real floppy disk. The principle for the hard disk is similar, and it will not be repeated. 4. Irrelevant to GRUB, cannot answer. If you want to install GRUB to CDROM, there are two or three methods: one method is to use GRLDR with nosimulation mode; another method is to use stage2_eltorito with no simulation mode; another method is to use the ordinary floppy disk emulation mode, and use the boot floppy disk containing GRUB as the boot image of CDROM.

Floor3　预言家	Posted 2005-07-07 00:00
初级用户　Posts 10　Credits 142
：:）Thanks, friend!

Floor4　Gandalf	Posted 2005-07-08 00:00
中级用户　Posts 96　Credits 362　From 北京
1. <Pass>；2. ISOEmu can support booting from virtual iso files; the Chinese localized version of Grub does not have this function; 3. For the use and editing of menu.lst, you can consider using WinGrub/GMEditoR to edit; 4. Burn with Nero, use the non-emulation method, and the boot file can be downloaded here: http://sysoft.zdwx.com/forum/viewthread.php?tid=41&fpage=1

Floor5　sunsmile23	Posted 2005-07-25 19:26
初级用户　Posts 11　Credits 26
Does it support floppy disks of any specifications and any sizes? Why doesn't the grub_for_dos-0.4.1pre19.tar.gz (which is also the latest version I downloaded) support 2.88M floppy disks? Also, may I ask: fdo, hd0, etc. refer to floppy disks and hard disks respectively. What is the name for the CD-ROM? For example, if I want to boot from the CD-ROM, how to write it?