GRUB4DOS 0.4.4 + Knoppix 6.4.4 boot problems

[kl522]

It seems GRUB4DOS 0.4.4, Linux Kernel 2.6.37 (32b) or any other component takes 33 MB RAM in 32-bit mode for booting purposes, 3039MB+33MB==3072MB (3GB) and 136 MB RAM in 64-bit mode, 3960MB+136MB==4096MB (4GB).

Yes kl522, customization is a key factor to do more with less.

Detecting 3039 MB out of the full 4G memory is ***NOT*** a feature of a 32 bit kernel. As when I compare my kernel config with Klaus Knopper's kernel config, is likely due to the target processor architecture which was chosen. He chose a CONFIG_M486. I happened to have chosen CONFIG_M686. With a non-CONFIG_M486, I have an additional CONFIG_HIMEM64G at my disposal too.

[KnUser]

Detecting 3039 MB out of the full 4G memory is ***NOT*** a feature of a 32 bit kernel. As when I compare my kernel config with Klaus Knopper's kernel config, is likely due to the target processor architecture which was chosen. He chose a CONFIG_M486. I happened to have chosen CONFIG_M686. With a non-CONFIG_M486, I have an additional CONFIG_HIMEM64G at my disposal too.

Dear kl522, your defense of the kernel is commendable but the alleged/veiled attack to the 32-bit kernel from my side is not so (an attack, I mean).

I stated clearly that whatever it be (GRUB4DOS 0.4.4, Linux Kernel 2.6.37 (32b) or any other component) takes 33 MB RAM in 32-bit mode for booting purposes, by the sole calculation of 3072MB-3039MB==33MB. Is not my intention to blame none particulary in a special way. What I mean is that it is mathematically true that 3039 is NOT EQUAL to 3072. Perhaps I find a bit hard to explain myself.

It seems GRUB4DOS 0.4.4, Linux Kernel 2.6.37 (32b) or any other component takes 33 MB RAM in 32-bit mode for booting purposes, 3039MB+33MB==3072MB (3GB) and 136 MB RAM in 64-bit mode, 3960MB+136MB==4096MB (4GB).

Again, thanks kl522.

I'll be a bit busy the next days so I'll try to attend this thread and schedule the aforementioned ISO customizations for a later moment but any ideas/comments relating to the topic of this thread are welcome.

[kl522]

I failed to understand the need to do any calculation.

Sure, when the bootloader such as grub4dos boots up, it needs memory. But when linux kernel takes over, it reclaims all the memory used by any other previous program(s). As a matter of fact as proven on my notebook when I booted using grub4dos, I still have full access to 4G of memory on my 32bit kernel. I don't have more than 4G of memory, otherwise I could even prove that I have access to 64G of memory on my 32bit kernel.