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bug#23496: grub2 does not support the legacy command "write"

From: Elmar Stellnberger
Subject: bug#23496: grub2 does not support the legacy command "write"
Date: Mon, 9 May 2016 19:26:06 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.0

   Package: grub
   Version: 1:2.02.beta2-6

I have tried to dd the boot image of the Ultimate Boot CD into a hard disk partition in order to boot it from there. Then I have converted the menu.lst as used by Grub1 on that CD image by grub-menulst2cfg. As it turned out most entries are no more bootable with grub2 because of the 'write' command being no more supported. As Jordan_U has told me on #grub this command would no more be supported due to security reasons. However my objection against abandoning support for the write command is that it can happily and safely be used together with ram disks as the Ultimate Boot CD does. Anyone here who would mind to implement the write command for Grub2? I would really believe that Grub2 should be backward compatible! Using Grub1 in addition to Grub2 has not proven to be a good alternative as it can not access iso9660 file systems when booted over a virtual floppy image. Up to now there is also no CD emulation; what works with Grub1 though is to enter the following manually when booting with another old physical grub1-bootcd:

  root (hd0,17)
  configfile (hd0,17)/boot/grub/menu.lst

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