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Grub cannot work with memdisk when loading big images


From: Frederic Corne
Subject: Grub cannot work with memdisk when loading big images
Date: Wed, 22 Jun 2005 23:04:46 +0200
User-agent: Mozilla Thunderbird 1.0.2 (Windows/20050317)

hello,

I have a problem like the ones reported by bugs :
http://savannah.gnu.org/bugs/?func=detailitem&item_id=4069
http://savannah.gnu.org/bugs/?func=detailitem&item_id=836
http://savannah.gnu.org/bugs/?func=detailitem&item_id=795
http://savannah.gnu.org/bugs/?func=detailitem&item_id=793

When i'm trying to boot dos-image (a 1.4 floppy) using memdisk (from P.Anvin) through ethernet, grub boot correctly. I get the dos prompt.

But if i try to boot a big (122Mo)windows image , it hangs just after downloading the file. The machine has plenty of ram (more than 384Mo).

I have tried with 0.94 version and the latest CVS 0.97

./configure --enable-diskless --enable-3c90x --enable-eepro100 --enable-lance --enable-3c595

%menu.lst
# 12.
title Windows
   debug
   root (nd)
   kernel (nd)/win/memdisk
   initrd /win/win.img
   boot


the "boot" never appears

in debug mode , the little indicator (-) spins when downloading the file , then rotate very very slowly, then stop . I have to reboot.

With pxelinux and the same memdisk and windows image , it works nicely
default config :
DEFAULT net
PROMPT 0
LABEL local
      LOCALBOOT 0
LABEL net
      KERNEL memdisk
      APPEND initrd=win.img


any hint ?

Thank you in advance.

FC




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