UBCD5.00 (beta7) grub4dos menu External links Options

[Icecube]

Yes, it is supposed to be in UBCD50b11. The linux part should be final: the sed script at least unless someone finds a bug of course; , the sh script 'needs' some checks to see that the used programs, are available (which should be the case in every distribution by default).

Note: some entries won't work yet.
- Pmagic (The /pmagic/boot/grub/menu.lst file doesn't exist)
- Gparted (The /pmagic/boot/grub/menu.lst file doesn't exist)
- Partimage (The /pmagic/boot/grub/menu.lst file doesn't exist)
- Testdisk (The /pmagic/boot/grub/menu.lst file doesn't exist)
- PhotoRec (The /pmagic/boot/grub/menu.lst file doesn't exist)
- DBAN (Didn't make the /ubcd/boot/dban/grub4dos.lst file yet)
- Offline registry editor (Didn't make the /ubcd/boot/offline/grub4dos.lst file yet)
- maybe some other programs that point to a non existing lst file for the moment

If you find an entry that doesn't work, let me know.

[tinybit]

@ caze
It is possible to use spaces with the write command, without escaping them.

CODE

write --offset=15 (fd0)/bin/setargs.bat ubcdcmd=0\r\necho Some text with spaces (no escaping needed)\r\n

OK in the latest build the quote for spaces is not required.

[tinybit]

CODE

title ISOLINUX menu (Use this when booting from CD or with ISO emulation)
chainloader --force /boot/isolinux/isolinux.bin

Yes, this one should work fine.

CODE

title SYSLINUX menu (Use this when booting from USB)
chainloader --force /boot/syslinux/ldlinux.sys

Unfortunately this one will not work. The ldlinux cannot be chainloaded. Of all kinds of syslinux kernel files, only the isolinux.bin can be chainloaded by grub4dos, and in that case the isolinux.bin must reside in a real cdrom(or a virtual cdrom emulated by grub4dos), that is to say, isolinux.bin on floppy or harddisk partitions cannot be chainloaded by grub4dos.

[Icecube]

I know that the isolinux.bin only works when it is on a iso9660 filesystem (because isolinux.bin only supports iso9660). And as far as I know the iso must be made with isolinux.bin in the bootsector (so grldr as bootloader at the CD or iso, doesn't let the command work (checksum error: if I remember well):

CODE

chainloader --force /boot/isolinux/isolinux.bin

Is there a way to avoid the checksum error when you use grldr as bootloader on the CD and want to chainload isolinux.bin (without disabling the check in the isolinux.bin file itself)?

If you extract the UBCD iso to a fat16 or fat32 partition, does the following command work?

CODE

chainloader --force /boot/syslinux/ldlinux.sys

Or is ldlinux.sys not chain loadable in this way. I know that it won't work from a CD (not iso9660 support).

Any news about grub4dos support for 2 initrds?

[tinybit]

... besided the double initrd problem ...

jaclaz

Check the recent builds and see if solved

[tinybit]

I know that the isolinux.bin only works when it is on a iso9660 filesystem (because isolinux.bin only supports iso9660). And as far as I know the iso must be made with isolinux.bin in the bootsector (so grldr as bootloader at the CD or iso, doesn't let the command work (checksum error: if I remember well):

CODE

chainloader --force /boot/isolinux/isolinux.bin

Is there a way to avoid the checksum error when you use grldr as bootloader on the CD and want to chainload isolinux.bin (without disabling the check in the isolinux.bin file itself)?

You must have used an old version of grub4dos. For newish versions the --force is not needed, and isolinux.bin can reside anywhere on the CDROM. If you did encounter problems, try an old isolinux.bin, and tell which is the earliest isolinux version that caused the failure.

If you extract the UBCD iso to a fat16 or fat32 partition, does the following command work?

CODE

chainloader --force /boot/syslinux/ldlinux.sys

Or is ldlinux.sys not chain loadable in this way. I know that it won't work from a CD (not iso9660 support).

No, it won't work. One of the most difficult things is to add chainloader support for various syslinux kernels(such as ldlinux, etc).

Any news about grub4dos support for 2 initrds?

The code was done, but I am not sure if it works.

[mr_]

No, it won't work. One of the most difficult things is to add chainloader support for various syslinux kernels(such as ldlinux, etc).

I made a topic about this little time before
http://www.boot-land.net/forums/index.php?showtopic=7013

Perhaps we should ask syslinux guys to provide a file for generic chainloading.

[tinybit]

Perhaps we should ask syslinux guys to provide a file for generic chainloading.

Good idea!

grub.exe, memdisk, plop,<----- all these are generic loadable, since they are simply Linux kernel format.

At least syslinux can follow the memdisk way so that it can be easily loaded by others.

[Icecube]

I get the following error (grub4dos 08-02-2008 + isolinux 3.72 or 3.73):

CODE

chainloader /boot/isolinux/isolinux.bin

Error 13: Invalid or unsupported executable format

Press any key to continue...

When adding the --force option, isolinux.bin boots.

I looked in the syslinux archive. It contains also a ldlinux.bin, besides the ldlinux.sys file.

I could let it partially work.

chainloader --force /boot/isolinux/ldlinux.bin
boot
Boot error

The 'Boot error' is a text that is available in ldlinux.bin, so it works at least partially. In fact, the bootsector works (512 first bytes = contents of ldlinux.bss, the rest is ldlinux.sys).

Offline password and registry editor seems to work with the last grub4dos version (2 initrds). Thanks go to bean (if he did make this possible, of course ).

CODE

kernel /ubcd/boot/offline/vmlinuz rw vga=1 init=/linuxrc
initrd /ubcd/boot/offline/initrd.cgz /ubcd/boot/offline/scsi.cgz

UBCD50b11 is out (no grub4dos support yet).
I have added help text support to the grub4dos menu (sed script).

[was_jaclaz]

Offline password and registry editor seems to work with the last grub4dos version (2 initrds). Thanks go to bean (if he did make this possible, of course ).

CODE

kernel /ubcd/boot/offline/vmlinuz rw vga=1 init=/linuxrc
initrd /ubcd/boot/offline/initrd.cgz /ubcd/boot/offline/scsi.cgz

VERY good news!

jaclaz