On Tue, Jun 10, 2014 at 07:30:58PM +0200, Laszlo Ersek wrote:
> On 06/10/14 19:16, Kashyap Chamarthy wrote:
[. . .]
> >
> > Yes, I can, but will have to wait till tomorrow -- the contents of the
> > script came down to 1.6G after trying to make an ISO as below.
> >
> > $ sudo dd bs=1k if=/dev/sdb2 of=fed-min2.iso conv=sparse
>
> (1) I think you should just format the disk image into a regular file,
> rather than dumping it to a USB stick,
Assuming I'm reading you correctly, the above script writes the OS
content directly to USB stick, I didn't dump to it from a disk image
file.
> and then dumping it back from there.
>
> (2) Even if you opt for the USB "detour", the above dd command line is
> incorrect. You selected a specific partition on the USB stick as input
> block device. That's wrong, we need to see the entire disk (partition
> table, EFI system partition etc).
You're right (sdb1 has "EFI System"):
$ sudo fdisk -l /dev/sdb
Disk /dev/sdb: 3.7 GiB, 4004511744 bytes, 7821312 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: C6CEC927-FA8F-4958-A223-A7BCE283241E
Device Start End Size Type
/dev/sdb1 2048 1046527 510M EFI System
/dev/sdb2 1048576 7819263 3.2G unknown
I'll do a redump of /dev/sdb as below:
$ sudo dd bs=1k if=/dev/sdb of=fed-min.iso conv=sparse
Thanks for pointing that out.
--
/kashyap
