On Saturday, October 13, 2018 5:42:15 PM EDT Chris Murphy wrote: > On Sat, Oct 13, 2018 at 1:30 PM, Garry T. Williams > <gtwilliams@xxxxxxxxx> wrote: > > On Saturday, October 13, 2018 3:12:44 PM EDT Samuel Sieb wrote: > >> On 10/13/18 10:39 AM, Garry T. Williams wrote: > >> > >> > What am I doing wrong here that I cannot boot after a > >> > system-upgrade? > >> > >> "Doesn't boot" is no information. What exactly is happening? > > > > Sorry, the boot record is gone. > > You determined this how? The machine did not boot the Fedora OS. Instead, it booted the OS on /dev/sda. Of course, I attempted to boot from the Fedora disk by using the boot device configuration screen by hitting F12 during reboot. This failed. (A photograph of the error would have been a good idea.) I assumed that the reason was the boot record was missing. > >I happen to have another system on > > > > the same machine and that system boots instead of the Fedora > > system before my recovery actions. When I forced a boot from > > the fedora system using the machine's boot selection screen, it > > fails. (No diagnostic information in the BIOS setup screen -- > > just won't boot. I was forced to specify the USB Live system to > > start a recovery.) > > Screen shots or cell photo of the failure might be useful because > failure/won't boot doesn't tell us what is happening. And what is > happening is a hint as to what the source of the problem is, how to > prevent it, and how to fix it. But "won't boot" is not much to go > on. Understood. > Is this BIOS or UEFI? From any other Linux, what do you get for > 'parted -l u s p' or "fdisk -l" ? And what do you get for > 'efibootmgr -v' ? This is useful. I will try to document these results when I upgrade to F30, if the same happens again. The fdisk -l did show what I expected it to show: Disk /dev/sda: 477 GiB, 512110190592 bytes, 1000215216 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: 4B21E327-DFE8-4105-AA9B-FEFF8AE8439F Device Start End Sectors Size Type /dev/sda1 2048 1026047 1024000 500M EFI System /dev/sda2 1026048 7317503 6291456 3G Microsoft basic data /dev/sda3 7317504 933572607 926255104 441.7G Linux filesystem /dev/sda4 933572608 1000214527 66641920 31.8G Linux swap Disk /dev/sdb: 477 GiB, 512110190592 bytes, 1000215216 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: 9114D615-2FD0-4CF1-A601-DAD4507F6254 Device Start End Sectors Size Type /dev/sdb1 2048 411647 409600 200M EFI System /dev/sdb2 411648 2508799 2097152 1G Linux filesystem /dev/sdb3 2508800 1000214527 997705728 475.8G Linux LVM Admittedly, this is output from the now-recovered system, but I can attest that the same was displayed when the command was done using the Ubuntu system that loaded from /dev/sda. > > The system-upgrade somehow wiped out my boot record on /dev/sdb. > > "boot record" is a BIOS term, so this could mean the code on LBA 0 > or in the MBR gap or BIOS Boot partition has been stepped on; but > dnf system upgrade doesn't have such an ability. In fact it's a bit > of a security and bug endurance problem that 'grub2-install' isn't > run on BIOS upgrades. Whereas on UEFI the bootloader binaries on > the EFI System partition are replaced during updates, so what > you're describing might be a GRUB bug. OK, the system was able to boot from /dev/sdb only after I reinstalled grub2-efi and shim. I assumed that was what restored the boot record (or whatever it's called). (I was able to boot normally from Fedora immediately before doing the dnf system-upgrade. A reinstall was not accepted by dnf, so I used update instead.) > But the details you're giving only lead to speculation so you need > to provide specifics, just won't boot is identical to what happens > to a computer without a drive at all. Well, I will not be so fast to restore, if it occurs again (f30). Thank you for your suggestions. I am sorry for the assumptions I made. For what it's worth now: garry@vfr$ efibootmgr -v BootCurrent: 0002 Timeout: 1 seconds BootOrder: 0002,0000,0003,0004,0005,0006,0007,0008,0009 Boot0000 ubuntu HD(1,GPT,3252a9ab-23eb-4fd4-9d11-6dc13c6f50ec, 0x800,0xfa000)/File(\EFI\ubuntu\shimx64.efi) Boot0002* Fedora HD(1,GPT,0534ef43-afb9-409c-8dc8-a1eff1e396ef, 0x800,0x64000)/File(\EFI\fedora\shim.efi) Boot0003* UEFI: SanDisk Extreme 0001 PciRoot(0x0)/Pci(0x14,0x0)/ USB(17,0)/HD(1,MBR,0x3cb5dbe1,0x16960,0x2990)..BO Boot0004* Diskette Drive BBS(Floppy,Diskette Drive,0x0)..BO Boot0005* P0: SK hynix SC300 SATA 512GB BBS(HD,P0: SK hynix SC300 SATA 512GB ,0x0)..BO Boot0006* P2: INTEL SSDSC2KF512H6 SATA 5 BBS(HD,P2: INTEL SSDSC2KF512H6 SATA 5,0x0)..BO Boot0007* USB Storage Device BBS(USB,SanDisk Extreme 0001,0x0)..BO Boot0008* CD/DVD/CD-RW Drive BBS(CDROM,P1: PLDS DVD+/-RW DU-8A5LH ,0x0)..BO Boot0009 Onboard NIC BBS(Network,IBA CL Slot 00FE v0106,0x0)..BO Boot000B* P2: INTEL SSDSC2KF512H6 SATA 5 BBS(HD,P2: INTEL SSDSC2KF512H6 SATA 5,0x0)..BO garry@vfr$ sudo parted -l u s p [sudo] password for garry: Model: ATA SK hynix SC300 S (scsi) Disk /dev/sda: 512GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 525MB 524MB fat32 EFI system partition boot, esp 2 525MB 3747MB 3221MB fat32 Basic data partition msftdata 3 3747MB 478GB 474GB ext4 4 478GB 512GB 34.1GB linux-swap(v1) swap Model: ATA INTEL SSDSC2KF51 (scsi) Disk /dev/sdb: 512GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 211MB 210MB fat16 EFI System Partition boot, esp 2 211MB 1285MB 1074MB ext4 3 1285MB 512GB 511GB lvm Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes. Ignore/Cancel? i Model: SanDisk Extreme (scsi) Disk /dev/sdc: 251GB Sector size (logical/physical): 2048B/512B Partition Table: mac Disk Flags: Number Start End Size File system Name Flags 1 2048B 10.2kB 8192B Apple 2 47.4MB 52.8MB 5448kB EFI 3 52.8MB 64.8MB 12.0MB EFI garry@vfr$ -- Garry T. Williams _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
