Hi,
we had some trouble loading a initrd ramdisk with grub version
0.5.96.1 on a linux kernel version 2.4.1 (failed with 2.4.0 too; both
configured with CONFIG_HIGHMEM4G=y) on a asus cur-dls mainboard with
one gig of memory.
the ramdisk was reported to be behind end of mem and therefore
ignored.
this fix solved the trouble:
*** 138,144 ****
#define LINUX_MAGIC_SIGNATURE 0x53726448 /* "HdrS" */
#define LINUX_DEFAULT_SETUP_SECTS 4
#define LINUX_FLAG_CAN_USE_HEAP 0x80
! #define LINUX_INITRD_MAX_ADDRESS 0x3C000000
#define LINUX_MAX_SETUP_SECTS 63
#define LINUX_BOOT_LOADER_TYPE 0x71
#define LINUX_HEAP_END_OFFSET (0x7F00 - 0x200)
--- 138,144 ----
#define LINUX_MAGIC_SIGNATURE 0x53726448 /* "HdrS" */
#define LINUX_DEFAULT_SETUP_SECTS 4
#define LINUX_FLAG_CAN_USE_HEAP 0x80
! #define LINUX_INITRD_MAX_ADDRESS 0x38000000
#define LINUX_MAX_SETUP_SECTS 63
#define LINUX_BOOT_LOADER_TYPE 0x71
#define LINUX_HEAP_END_OFFSET (0x7F00 - 0x200)
well, i'm clueless where the original 960MB limit came from (and about
memory layout at all ;-). anyway, the 0x38000000 barrier was
mentioned in the 2.4.1 boot messages at failure (sorry, i don't have
the message handy to show it).
anyway, at least this report in the archive may help others with the
same trouble.
have fun,
Erik
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