thank you for your answer.. I have problem with the identification of the hard drive that has the MBR .
In the screen that the BIOS show me, I see three HD: - ST 3500418AS - WDC WD10EZEX 60Z - WDC WD50000AZRX-0 *(I have to select one of those )* --------------------- This information say me nothing about what is the HD with MBR.. Only from the command : sudo blkid I get : /dev/sda1: LABEL="data_storing" UUID="080CD0150CCFFC1E" TYPE="ntfs" PARTUUID="2c5f2c5e-01" /dev/sdb1: UUID="4b1e5e09-306b-4c17-8c2f-653b32e1b956" TYPE="ext4" PARTUUID="0008635c-01" /dev/sdb2: UUID="Vtbdeq-eq6H-sbMY-Mpme-UyFk-jx77-I5Z20K" TYPE="LVM2_member" PARTUUID="0008635c-02" /dev/sr0: UUID="2014-05-16-21-49-27-00" LABEL="ISOIMAGE" TYPE="iso9660" PTTYPE="dos" /dev/sdc1: UUID="DE7CD8197CD7EA73" TYPE="ntfs" PARTUUID="f043f043-01" /dev/sdc5: UUID="62F0169EF016790D" TYPE="ntfs" PARTUUID="f043f043-05" /dev/mapper/fedora-swap: UUID="54d55595-8c35-4e84-8566-89d8b6f340e8" TYPE="swap" /dev/mapper/fedora-root: UUID="2d224b16-d37f-4eee-820a-dfcd5929e05e" TYPE="ext4" /dev/mapper/fedora-home: UUID="3c3f7a2e-82fa-4510-ac11-0c67fbbd85c0" TYPE="ext4" --------------------- I am also not sure how to interpret these data in order to know the partition that have the MBR.. (perhaps is /dev/sdb1 ---- ??? because is the only partition with file system EXT4 ??? ) In any case: ... how I can individuate the HD to start at boot, knowing the partition ???????????? Thank you for any suggestion On Thu, Nov 19, 2015 at 9:04 PM, stan <stanl-fedorau...@vfemail.net> wrote: > On Thu, 19 Nov 2015 17:51:18 +0200 > Angelo Moreschini <mrangelo.fed...@gmail.com> wrote: > > > the command lsblk give me : > > [angelo_user@zorro ~]$ lsblk > > NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT > > sda 8:0 0 465.8G 0 disk > > └─sda1 8:1 0 465.8G 0 part > > sdb 8:16 0 931.5G 0 disk > > ├─sdb1 8:17 0 500M 0 part /boot > > └─sdb2 8:18 0 931G 0 part > > ├─fedora-root 253:0 0 50G 0 lvm / > > ├─fedora-swap 253:1 0 3.9G 0 lvm [SWAP] > > └─fedora-home 253:2 0 877.1G 0 lvm /home > > sdc 8:32 0 465.8G 0 disk > > ├─sdc1 8:33 0 97.7G 0 part > > ├─sdc2 8:34 0 1K 0 part > > └─sdc5 8:37 0 368.1G 0 part > > sr0 11:0 1 12M 0 > > rom /run/media/angelo_user/ISOIMAGE > > > > > > ---------- > > I tried: > > ---------- > > [angelo_user@zorro ~]$ *sudo grub2-install /dev/sdb1* > > /usr/sbin/grub2-bios-setup: warning: File system ‘ext2’ doesn't > > support embedding. > > /usr/sbin/grub2-bios-setup: warning: Embedding is not possible. GRUB > > can only be installed in this setup by using blocklists. However, > > blocklists are UNRELIABLE and their use is discouraged.. > > /usr/sbin/grub2-bios-setup: error: will not proceed with blocklists. > > -------------------- > > and also : > > [angelo_user@zorro ~]$ *sudo grub2-install /dev/sdb2* > > /usr/sbin/grub2-bios-setup: error: unable to identify a filesystem in > > hostdisk//dev/sdb; safety check can't be performed. > > The MBR is for the disk, not the partition. So the above are incorrect. > > > > > > > > > On Thu, Nov 19, 2015 at 5:38 PM, Angelo Moreschini < > > mrangelo.fed...@gmail.com> wrote: > > > > > Hj, > > > > > > I arranged differently the position of the HD(s) installed on my > > > computer and then, because this, Fedora didn't start regularly... > > > (at boot I got only the emergency prompt of GRUB). > > > > > > > > > I was able to start Fedora using the "disk GRUB 2 for recovery".. > > > I and after this tried to install grub back to the MBR.. > > > > > > > > > I tried this operation using the command : > > > grub2 install /dev/sdc > > This is the correct syntax to install it to the MBR of /dev/sdc. Is > there enough room for the larger MBR on that hard drive? I think that > grub2 requires at least 1 MB at the start of the drive. What does > fdisk show? What offset does /dev/sdc1 start at? > > > > > > > The command ls -l /dev/sd* > > > give me this output : > > > er@zorro ~]$ ls -l /dev/sd* > > > brw-rw----. 1 root disk 8, 0 Nov 19 16:49 /dev/sda > > > brw-rw----. 1 root disk 8, 1 Nov 19 16:49 /dev/sda1 > > > brw-rw----. 1 root disk 8, 16 Nov 19 16:49 /dev/sdb > > > brw-rw----. 1 root disk 8, 17 Nov 19 16:49 /dev/sdb1 > > > brw-rw----. 1 root disk 8, 18 Nov 19 16:49 /dev/sdb2 > > > brw-rw----. 1 root disk 8, 32 Nov 19 16:49 /dev/sdc > > > brw-rw----. 1 root disk 8, 33 Nov 19 16:49 /dev/sdc1 > > > brw-rw----. 1 root disk 8, 34 Nov 19 16:49 /dev/sdc2 > > > brw-rw----. 1 root disk 8, 37 Nov 19 16:49 /dev/sdc5 > > > > > > I used the command grub2 install /dev/sdc, thinking fedora is > > > installed on /dev/sdc... > > > > > > ------------------------- > > > Actually I can start fedora only using the "disk GRUB 2 for > > > recovery" but I would like start the computer regularly.... > > > > > > > > > My ask is : what is the correct value of the parameter /dev/sdX in > > > the command grub2-install > > I think your issue isn't the install of grub2 on the MBR, it is the > boot order in the bios of your computer. The bios has to point to the > hard drive that has the MBR you want to boot from. So, in your case, > you should make sure the boot order in the bios looks at /dev/sdc. In > most modern bioses, there is a function key you can hit to select the > boot device at boot time. Or a key to hit to edit the bios > configuration. > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines > Have a question? Ask away: http://ask.fedoraproject.org >
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