I've been seeing some error messages regarding the formatting and/or partitioning of my hard drive (ie. file descriptor errors, magic number mismatch errors), and while poking around in gdisk, I saw there was an error in a GPT partition on my EFI system parition. My EFI partition is 500MB, and drive is 500GB, yet gdisk said my EFI partition was 800GB. I figured there wouldn't be any harm in loading the backup GPT table (via gdisk > r > c > w), so I wrote the backup GPT table as the main table, and rebooted.
After rebooting, no OSes were detected. I booted from a live usb, and reinstalled grub. This resulted in many 'grub-install.real: warning' messages saying there was an improperly nested parition "hostdisk//dev/nvme0n1, gpt1, msdos2". After reboot, no OSes detected.
I rebooted and ran an auto fix/check partition through gparted (right click > check). This resulted in some messages that seemed relevant:
FSINFO sector has bad magic number(s):
Offset 0: 0x20494645 != expected 0x4161525
Offset 484:0x000000000 != expected 0x61417272
Offset 510: 0x0000 != expected 0xaa55
Auto-correcting it
After this, the gdisk output wasn't happy with the GPT:
Caution! After loading partitions, the CRC doesn't check out!
Warning! Main partition table CRC mismatch! Loaded backup partition table
instead of main partition table!
Warning! One or more CRCs don't match. You should repair the disk!
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: damaged
But grub now shows no improperly nested partition errors. After updating grub, I rebooted into linux, but can't seem to fix Windows.
I don't currently have access to any Windows Repair disks (besides, my computer doesn't have a CD drive), though I do have Windows Recovery and Image Partitions.
Background info: Dell XPS 15 with a dual boot setup of Windows 10 and Linux Mint.
Select Boot-Repair Output:
no valid partition table found
"blkid" output: ________________________________________________________________
Device UUID TYPE LABEL
/dev/nvme0n1
/dev/nvme0n1p1 DE6C-05EA vfat ESP
/dev/nvme0n1p2
/dev/nvme0n1p3 AADCA51FDCA4E6B3 ntfs OS
/dev/nvme0n1p4 1422A1A622A18CF4 ntfs WINRETOOLS
/dev/nvme0n1p5 02AEA20EAEA1FA75 ntfs Image
/dev/nvme0n1p6 9bfef4c0-4af2-4758-adb9-bb1c08256462 ext4 LinuxMint
/dev/nvme0n1p7 2c2ca336-a7eb-429b-b6ed-12b83750ed73 swap
ls -l /dev/disk/by-id output:
total 0
lrwxrwxrwx 1 root root 13 Jul 23 15:22 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208 -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part2 -> ../../nvme0n1p2
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part3 -> ../../nvme0n1p3
lrwxrwxrwx 1 root root 15 Jul 23 15:23 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part4 -> ../../nvme0n1p4
lrwxrwxrwx 1 root root 15 Jul 23 15:23 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part5 -> ../../nvme0n1p5
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part6 -> ../../nvme0n1p6
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-PM951_NVMe_SAMSUNG_512GB__S29PNXAG917208-part7 -> ../../nvme0n1p7
lrwxrwxrwx 1 root root 13 Jul 23 15:22 nvme-eui.00253843591b4338 -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-eui.00253843591b4338-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-eui.00253843591b4338-part2 -> ../../nvme0n1p2
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-eui.00253843591b4338-part3 -> ../../nvme0n1p3
lrwxrwxrwx 1 root root 15 Jul 23 15:23 nvme-eui.00253843591b4338-part4 -> ../../nvme0n1p4
lrwxrwxrwx 1 root root 15 Jul 23 15:23 nvme-eui.00253843591b4338-part5 -> ../../nvme0n1p5
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-eui.00253843591b4338-part6 -> ../../nvme0n1p6
lrwxrwxrwx 1 root root 15 Jul 23 15:22 nvme-eui.00253843591b4338-part7 -> ../../nvme0n1p7
StdErr Messages:
File descriptor 9 (/proc/3448/mounts) leaked on lvs invocation. Parent PID 26812: bash
File descriptor 63 (pipe:[39653]) leaked on lvs invocation. Parent PID 26812: bash
ADDITIONAL INFORMATION:
log of boot-repair 2017-07-23__15h21:
boot-repair version : 4ppa40
boot-sav version : 4ppa40
glade2script version : 3.2.3~ppa1
boot-sav-extra version :
File descriptor 9 (/proc/3448/mounts) leaked on lvs invocation. Parent PID 5297: /bin/sh
Warning: failed to translate partition name
Warning: failed to translate partition name
boot-repair is executed in installed-session (Linux Mint 18.1 Serena, serena, LinuxMint, x86_64)
CPU op-mode(s): 32-bit, 64-bit
BOOT_IMAGE=/boot/vmlinuz-4.8.0-58-generic root=UUID=9bfef4c0-4af2-4758-adb9-bb1c08256462 ro quiet splash crashkernel=384M-:128M vt.handoff=7
nvme0n1 (nvme0n1) has unknown type. Please report this message to [email protected]
nvme0n1 (nvme0n1) has unknown type. Please report this message to [email protected]
mount: /dev/nvme0n1 is already mounted or /mnt/boot-sav/nvme0n1 busy
mount /dev/nvme0n1 : Error code 32
mount -r /dev/nvme0n1 /mnt/boot-sav/nvme0n1
mount: /dev/nvme0n1 is already mounted or /mnt/boot-sav/nvme0n1 busy
mount -r /dev/nvme0n1 : Error code 32
1 disks with OS, 2 OS : 1 Linux, 0 MacOS, 1 Windows, 0 unknown type OS.
mount: /dev/nvme0n1 is already mounted or /mnt/boot-sav/nvme0n1 busy
mount /dev/nvme0n1 : Error code 32
mount -r /dev/nvme0n1 /mnt/boot-sav/nvme0n1
mount: /dev/nvme0n1 is already mounted or /mnt/boot-sav/nvme0n1 busy
mount -r /dev/nvme0n1 : Error code 32
Windows not detected by os-prober on nvme0n1p3.
Update: Solution:
After booting off a windows 10 recovery USB, I noticed the EFI partition was listed as RAW format by diskpart.
After rebooting into ubuntu, I also noticed the windows reserved partition 2 seemed to have an issue. I copied the EFI files off the partition, formatted the drive to ext4, then back to fat32, then copied the files back on. This fixed the error flag on the reserved partition 2, and windows booted perfectly on reboot.
