R recovery and transformation options (experts only) O create a new empty GUID partition table (GPT) I show detailed information on a partition When you open gdisk you'll see something like the above go ahead and hit the ? for the menu: b back up GPT data to a file device file your usb disk is on for my /dev/loop2: gdisk /dev/loop2Ĭreating new GPT entries.Command (? for help): ? For instance, because you likely wrote over some very early blocks on that disk, we need to clear them: dd ibs=4M count=1 if=/dev/zero of=/dev/loop2 But, otherwise, what I am doing is what you need to do. You don't want to use fallocate or losetup I'm just showing you that I am in the interest of full-disclosure. OK, I guess I don't have a thumb drive handy so I'm just going to do it like this: fallocate -l $((650*1024*1024)) /tmp/bootimage So, now I'll get into gdisk and we'll prepare our target efi system partition.

In fact, once you pull what you need out of here, you need little else than that other file I've already pointed out. I don't really know too much about that but if you have a UEFI system the kernel and initramfs image you'll need are in the efiboot.img file.

iso image works by subverting the iso image standard and creating something like a fake partition or something. Mount /mnt/iso/EFI/archiso/efiboot.img $_Īrchiso boot shell圆4_v1.efi shell圆4_v2.efi Still, if it is a 32-bit machine just follow along but from here on out substitute the 686 files for the x86-64 I'll be targeting. I'm willing to bet you've got a 64-bit machine if you're going with Arch and so the sfs image file in the above directory makes the bulk of what you'll need. There are two images here - one each for 32 and 64-bit machines: ls $_/x86_64 Or, it's better to say you probably only need half of it. Mount: /dev/loop0 is write-protected, mounting read-onlyīoot x86_64 5 I just downloaded the latest arch iso and mounted it: du archlinux-2014.04.01-dual.iso

Arch linux iso usb