scusami…eccoti il tutto… ha dato errore nel terzultimo comando…
[root@localhost liveuser]# blkid
/dev/sdb1: LABEL="FEDORA-LIVE" UUID="0819-5433" TYPE="vfat"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="DM_snapshot_cow"
/dev/loop2: TYPE="squashfs"
/dev/loop3: LABEL="_Fedora-Live-Des" UUID="e48f57e7-199c-4837-9c5d-08c10250e6db" TYPE="ext4"
/dev/loop4: TYPE="DM_snapshot_cow"
/dev/sda1: LABEL="Riservato per il sistema" UUID="4EBE278FBE276F21" TYPE="ntfs"
/dev/sda2: UUID="1AE82A57E82A3205" TYPE="ntfs"
/dev/sda3: UUID="qn5NZ2-THxf-LOYB-VaNt-f84R-K9bk-pyfWkv" TYPE="LVM2_member"
/dev/sda4: LABEL="Dati" UUID="78AE4C0A1E43061D" TYPE="ntfs"
/dev/mapper/fedora-root: UUID="57f6b844-6b7c-48f7-948b-7ca1aebd0017" TYPE="ext4"
/dev/mapper/fedora-swap: UUID="6d1156bf-de71-401d-823a-218829dd9395" TYPE="swap"
/dev/mapper/live-rw: LABEL="_Fedora-Live-Des" UUID="e48f57e7-199c-4837-9c5d-08c10250e6db" TYPE="ext4"
/dev/mapper/live-osimg-min: LABEL="_Fedora-Live-Des" UUID="e48f57e7-199c-4837-9c5d-08c10250e6db" TYPE="ext4"
[root@localhost liveuser]# mkdir -p /media/rescue
[root@localhost liveuser]# mount /dev/mapper/fedora-root /media/rescue
[root@localhost liveuser]# ll /media/rescue/boot
total 77328
-rw-r--r--. 1 root root 131339 Nov 4 09:14 config-3.11.7-200.fc19.x86_64
-rw-r--r--. 1 root root 127669 Jun 11 15:46 config-3.9.5-301.fc19.x86_64
drwxr-xr-x. 4 root root 4096 Jun 27 13:13 efi
-rw-r--r--. 1 root root 178176 Sep 16 06:14 elf-memtest86+-4.20
drwxr-xr-x. 6 root root 4096 Nov 13 08:18 grub2
-rw-------. 1 root root 36628117 Nov 10 21:15 initramfs-0-rescue-7725dfc225d14958a625ddaaaea5962b.img
-rw-------. 1 root root 10924582 Nov 11 02:42 initramfs-3.11.7-200.fc19.x86_64.img
-rw-------. 1 root root 9868973 Nov 10 21:13 initramfs-3.9.5-301.fc19.x86_64.img
-rw-r--r--. 1 root root 557674 Nov 11 02:41 initrd-plymouth.img
-rw-r--r--. 1 root root 176500 Sep 16 06:14 memtest86+-4.20
-rw-------. 1 root root 2688224 Nov 4 09:14 System.map-3.11.7-200.fc19.x86_64
-rw-------. 1 root root 2594764 Jun 11 15:46 System.map-3.9.5-301.fc19.x86_64
-rwxr-xr-x. 1 root root 5055896 Nov 10 21:15 vmlinuz-0-rescue-7725dfc225d14958a625ddaaaea5962b
-rwxr-xr-x. 1 root root 5149112 Nov 4 09:14 vmlinuz-3.11.7-200.fc19.x86_64
-rwxr-xr-x. 1 root root 5055896 Jun 11 15:46 vmlinuz-3.9.5-301.fc19.x86_64
[root@localhost liveuser]# ll /media/rescue/etc/fstab
-rw-rw-r--. 1 root root 371 Nov 10 21:12 /media/rescue/etc/fstab
[root@localhost liveuser]# # for i in {/dev/,/dev/pts/,/proc/,/sys/}; do mount -o bind "$i" "/media/rescue$i"; done
[root@localhost liveuser]# chroot /media/rescue
[root@localhost /]# grub2-mkconfig -o /boot/grub2/grub.cfg
/usr/sbin/grub2-probe: error: cannot find a device for / (is /dev mounted?).
[root@localhost /]# grep CMDLINE /etc/default/grub
GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/swap rd.md=0 rd.dm=0 vconsole.keymap=us $( -x /usr/sbin/rhcrashkernel-param ] && /usr/sbin/rhcrashkernel-param || :) rd.luks=0 vconsole.font=latarcyrheb-sun16 rd.lvm.lv=fedora/root rhgb quiet"
[root@localhost /]# exit
exit
[root@localhost liveuser]#