On Sat, Apr 16, 2016 at 4:27 AM, Kevin Wilson <wkevils(a)gmail.com> wrote:
After copying an ISO of fedora 23 x86_64 into a USB key with the dd
command, everything is fine - I can boot with that USB
However, there is one machine where I have to use nosmp so that it
will boot. There is some hw problem with this issue but
this machine is only for simple tests so I don't mind that it will
work as a non SMP machine,
So I want to change the grub of the USB disk on key (add "nosmp" to
the kernel command line)
When I boot into fedora from hard disk and try to mount it, it is
mounted as read-only. Also specifying "rw" and a boot options does not
it - it refuses to do so:
mount /dev/sdc1 -o rw /mnt/sdc1
Failed to execute operation: Access denied.
Any ideas if there is anything I can do make this USB read-write ? or
is there a way to perapare Live Fedora USB key so that it could be
mounted from the Hard Disk as read-write ?
Install livecd-tools and use livecd-iso-to-disk to make the stick. If
you use --reset-mbr --efi --format and point it at the whole device,
all data on the stick is lost, but it'll create a BIOS+UEFI bootable
stick. All files will be on FAT32 which is read writable, including
either grub.cfg (used on UEFI) or syslinux.conf (used on BIOS). When
you dd the image to the USB stick, it retains the ISO's format of
iso9660 which isn't a writable format.