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I was recently dual booting my acer netbook to run ubuntu and windows 7, I ended up deleting the partition for ubuntu and came with the no such partition error. the matter got worse when I decided to wipe the hard drive using gparted live, wich still came up with the grub rescue error. all the other questions that were asked required some sort of operating system. since there is none, I don't know what to do.

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    If there's no OS then the computer is useless, until you install one. What's the point of your question? As soon as you install something a new bootloader will also be installed. – GabrielaGarcia Jul 12 at 1:28
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It seems this were bios-installations und grub is still anywhere.

Boot a live-session. very long command fdisk -l 2>/dev/null | egrep "Disk /|/dev/" | sed "s#^/dev/#Part /dev/#" | awk '{print $2}' | sed 's/://' | xargs -n1 -IX sudo sh -c "hexdump -v -s 0x80 -n 2 -e '2/1 \"%x\" \"\\n\"' X | xargs -n1 -IY sh -c \"case \"Y\" in '48b4') echo X: GRUB 2 v1.96 ;; 'aa75' | '5272') echo X: GRUB Legacy ;; '7c3c') echo X: GRUB 2 v1.97 oder v1.98 ;; '020') echo X: GRUB 2 v1.99 ;; *) echo X: Kein GRUB Y ;; esac\""

It shows if any grub is in any Partiton or mbr. if so sudo dd if=/dev/zero of=/dev/sd? bs=1 count=446 you mußt adapt the ? to your situation.

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