Re: grub in mac

[Andrei Borzenkov]

On Tue, Nov 10, 2015 at 7:33 AM, Peter Cheung <address@hidden> wrote:
> hi,
>    i am nearly able to build a file system image with FAT partition in mac,
> but i stuck in this command:
>

Do you mean you create hard disk image and want to install GRUB on this image?

> sudo $base/sbin/grub-bios-setup --no-rs-codes -m device.map -c
> ../../`pwd`/temp/boot/grub/core.img -b
> ../../toolchain/lib/grub/i386-pc/boot.img $deviceName

And what is $deviceName?

> /toolchain/sbin/grub-bios-setup: error: attempt to read or write outside of
> disk `hostdisk//dev/disk2'.
>

This means GRUB does not detect $deviceName as device available at
boot time. Usual big hammer is suitable device.map.

> I cross compiled my grub by :
>
>    ./configure --prefix=$PREFIX --target=i586-peter-elf
>
> Any tips?
>
>
> Below is my script to make the fs image:
>
> base=/toolchain
>
> rm -fr hd.img
>
> tempDeviceName=`hdiutil info|grep FDisk|cut -d$'\t' -f1`
>
> hdiutil eject $tempDeviceName
>
> commands=( `which dd` `which kpartx` $base/bin/grub-mkimage
> $base/sbin/grub-bios-setup )
>
> error="false"
>
> for c in address@hidden; do
>
> if [ ! -x $c ]; then
>
>     echo "************************************************************";
>
>     echo "$c not found!";
>
>     echo "************************************************************";
>
>     error="true";
>
> fi
>
> done
>
>
> if [ "$error" == "true" ]; then
>
> exit;
>
> fi
>
>
> dd if=/dev/zero of=hd.img count=10240 bs=10240
>
> #kpartx -d hd.img
>
> deviceName=`hdiutil attach -imagekey diskimage-class=CRawDiskImage -nomount
> hd.img`
>
> deviceName=${deviceName//[[:space:]]/}
>
> echo "deviceName="$deviceName
>
>
> umount temp
>
> rm -fr temp
>
> mkdir temp
>
> # create partition
>
> diskutil partitionDisk $deviceName MBRFormat "MS-DOS FAT32" "A" 100%
>
> umount /Volumes/a
>
> # end create partition
>
> mount -t msdos $deviceName"s1" temp
>
> mkdir -p temp/boot/grub
>
> cp grub.cfg temp/boot/grub/
>
> cp kernel/kernel temp/boot/
>
>
> # setup grub
>
> echo "(hd0) /dev/loop0" > device.map
>
> echo "set prefix=(hd0,msdos1)/boot/grub" > mycfg.cfg
>
>
> $base/bin/grub-mkimage --config=mycfg.cfg -p /boot -O i386-pc -o
> temp/boot/grub/core.img biosdisk part_msdos fat vbe vga echo configfile
> multiboot multiboot2
>
> cp $base/lib/grub/i386-pc/boot.img temp/boot/grub/
>
>
> $base/sbin/grub-bios-setup --no-rs-codes -m device.map -c
> ../../`pwd`/temp/boot/grub/core.img -b
> ../../toolchain/lib/grub/i386-pc/boot.img $deviceName
>
> # end setup grub
>
>
> umount temp
>
> #kpartx -d hd.img
>
> hdiutil eject $deviceName
>
> rm -fr temp
>
> rm -fr device.map
>
> rm -fr mycfg.cfg
>
>
> thanks
> from Peter (address@hidden)
>
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>