Determine where exactly GRUB is installed.
I will use grub-probe utility which is used to probe device information for GRUB.
$ grub-probe --usage
Usage: grub-probe [-0dv?V] [-m FILE] [-t TARGET] [--device]
[--device-map=FILE] [--target=TARGET] [--verbose] [--help]
[--usage] [--version] [OPTION]... [PATH|DEVICE]
Display system device name.
alpha$ sudo grub-probe --target device /boot/grub
/dev/md0
beta$ sudo grub-probe --target device /boot/efi
/dev/nvme0n1p1
Display GRUB device name
alpha$ sudo grub-probe --target drive /boot/grub/
(mduuid/a69ca2d5902fc179787bbdd3be2c721f)
beta$ sudo grub-probe --target drive /boot/grub
(hostdisk//dev/nvme0n1,gpt2)
Display device name for the whole disk.
alpha$ sudo grub-probe --target disk /boot/grub
/dev/md0
beta$ sudo grub-probe --target disk /boot/efi
/dev/nvme0n1
Display filesystem UUID (Universally Unique Identifier).
alpha$ sudo grub-probe --target fs_uuid /boot/grub
a7285c7f-0608-41c6-b588-ab6d18b52003
You can also display search hints (see Texinfo manual for more details).
alpha$ sudo grub-probe --target hints_string /boot/grub
--hint='mduuid/a69ca2d5902fc179787bbdd3be2c721f'
Display verbose messages.
alpha$ sudo grub-probe -v /boot/grub/
grub-probe: info: cannot open `/boot/grub/device.map': No such file or directory. grub-probe: info: /dev/md0 is not present. grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to mqueue. grub-probe: info: changing current directory to hugepages. grub-probe: info: changing current directory to shm. grub-probe: info: changing current directory to disk. grub-probe: info: changing current directory to by-uuid. grub-probe: info: changing current directory to by-partuuid. grub-probe: info: changing current directory to by-partlabel. grub-probe: info: changing current directory to by-id. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to dri. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to mqueue. grub-probe: info: changing current directory to hugepages. grub-probe: info: changing current directory to shm. grub-probe: info: changing current directory to disk. grub-probe: info: changing current directory to by-uuid. grub-probe: info: changing current directory to by-partuuid. grub-probe: info: changing current directory to by-partlabel. grub-probe: info: changing current directory to by-id. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to dri. grub-probe: info: changing current directory to by-path. grub-probe: info: /dev/sda2 is not present. grub-probe: info: Looking for /dev/sda2. grub-probe: info: /dev/sda is a parent of /dev/sda2. grub-probe: info: /dev/sda2 starts from 4096. grub-probe: info: opening the device hostdisk//dev/sda. grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sda is 1953525168. grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sda is 1953525168. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sda. grub-probe: info: scanning hostdisk//dev/sda for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sda. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sda. grub-probe: info: scanning hostdisk//dev/sda for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sda. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sda. grub-probe: info: Found array md/0. grub-probe: info: Inserting hostdisk//dev/sda (+4096,1921875968) into md/0 (mdraid1x) . grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sda is 1953525168. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sda. grub-probe: info: Found array md/1. grub-probe: info: Inserting hostdisk//dev/sda (+1921880064,31643648) into md/1 (mdraid1x) . grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sda is 1953525168. grub-probe: info: Partition 0 starts from 34. grub-probe: info: Partition 1 starts from 4096. grub-probe: info: /dev/sdb2 is not present. grub-probe: info: Looking for /dev/sdb2. grub-probe: info: /dev/sdb is a parent of /dev/sdb2. grub-probe: info: /dev/sdb2 starts from 4096. grub-probe: info: opening the device hostdisk//dev/sdb. grub-probe: info: drive = 1. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-probe: info: drive = 1. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Inserting hostdisk//dev/sdb (+4096,1921875968) into md/0 (mdraid1x) . grub-probe: info: drive = 1. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Inserting hostdisk//dev/sdb (+1921880064,31643648) into md/1 (mdraid1x) . grub-probe: info: drive = 1. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-probe: info: Partition 0 starts from 34. grub-probe: info: Partition 1 starts from 4096. grub-probe: info: /dev/md0 is not present. grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to mqueue. grub-probe: info: changing current directory to hugepages. grub-probe: info: changing current directory to shm. grub-probe: info: changing current directory to disk. grub-probe: info: changing current directory to by-uuid. grub-probe: info: changing current directory to by-partuuid. grub-probe: info: changing current directory to by-partlabel. grub-probe: info: changing current directory to by-id. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to dri. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to mqueue. grub-probe: info: changing current directory to hugepages. grub-probe: info: changing current directory to shm. grub-probe: info: changing current directory to disk. grub-probe: info: changing current directory to by-uuid. grub-probe: info: changing current directory to by-partuuid. grub-probe: info: changing current directory to by-partlabel. grub-probe: info: changing current directory to by-id. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to dri. grub-probe: info: changing current directory to by-path. grub-probe: info: /dev/sda2 is present. grub-probe: info: Looking for /dev/sda2. grub-probe: info: /dev/sda is a parent of /dev/sda2. grub-probe: info: /dev/sda2 starts from 4096. grub-probe: info: opening the device hostdisk//dev/sda. grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sda is 1953525168. grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sda is 1953525168. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sda. grub-probe: info: scanning hostdisk//dev/sda for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sda. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sda. grub-probe: info: scanning hostdisk//dev/sda for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sda. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sda. grub-probe: info: Partition 0 starts from 34. grub-probe: info: Partition 1 starts from 4096. grub-probe: info: /dev/sdb2 is present. grub-probe: info: Looking for /dev/sdb2. grub-probe: info: /dev/sdb is a parent of /dev/sdb2. grub-probe: info: /dev/sdb2 starts from 4096. grub-probe: info: opening the device hostdisk//dev/sdb. grub-probe: info: drive = 1. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-probe: info: drive = 1. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Partition 0 starts from 34. grub-probe: info: Partition 1 starts from 4096. grub-probe: info: /dev/md0 is not present. grub-probe: info: opening mduuid/a69ca2d5902fc179787bbdd3be2c721f. ext2
Display very verbose messages.
alpha$ sudo grub-probe -vv /boot/grub/ 2>&1
grub-probe: info: cannot open `/boot/grub/device.map': No such file or directory. grub-probe: info: /dev/md0 is not present. grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to mqueue. grub-probe: info: changing current directory to hugepages. grub-probe: info: changing current directory to shm. grub-probe: info: changing current directory to disk. grub-probe: info: changing current directory to by-uuid. grub-probe: info: changing current directory to by-partuuid. grub-probe: info: changing current directory to by-partlabel. grub-probe: info: changing current directory to by-id. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to dri. grub-probe: info: changing current directory to by-path. grub-probe: info: /dev/sdb2 is not present. grub-probe: info: Looking for /dev/sdb2. grub-probe: info: /dev/sdb is a parent of /dev/sdb2. grub-probe: info: /dev/sdb2 starts from 4096. grub-probe: info: opening the device hostdisk//dev/sdb. grub-core/kern/disk.c:196: Opening `hostdisk//dev/sdb'... grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-core/kern/disk.c:196: Opening `hostdisk//dev/sdb'... grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:420: opening the device `/dev/sdb' in open_device() grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-core/partmap/gpt.c:93: Read a valid GPT header grub-core/partmap/gpt.c:115: GPT entry 0: start=34, length=4062 grub-core/partmap/gpt.c:115: GPT entry 1: start=4096, length=1921875968 grub-core/partmap/gpt.c:115: GPT entry 2: start=1921880064, length=31643648 grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-core/partmap/gpt.c:93: Read a valid GPT header grub-core/partmap/gpt.c:115: GPT entry 0: start=34, length=4062 grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:420: opening the device `/dev/sdb1' in open_device() grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb1' grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-core/partmap/dfly.c:69: bad magic (found 0x821cea; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x52e8; wanted 0x4552) grub-core/partmap/gpt.c:115: GPT entry 1: start=4096, length=1921875968 grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:420: opening the device `/dev/sdb2' in open_device() grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb2' grub-core/disk/diskfilter.c:937: Found array md/0 grub-probe: info: Found array md/0. grub-core/disk/diskfilter.c:1191: Inserting hostdisk//dev/sdb (+4096,1921875968) into md/0 (mdraid1x) grub-probe: info: Inserting hostdisk//dev/sdb (+4096,1921875968) into md/0 (mdraid1x) . grub-core/kern/disk.c:196: Opening `hostdisk//dev/sdb'... grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-core/partmap/dfly.c:69: bad magic (found 0x0; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x0; wanted 0x4552) grub-core/partmap/gpt.c:115: GPT entry 2: start=1921880064, length=31643648 grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/osdep/hostdisk.c:420: opening the device `/dev/sdb3' in open_device() grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb3' grub-core/disk/diskfilter.c:937: Found array md/1 grub-probe: info: Found array md/1. grub-core/disk/diskfilter.c:1191: Inserting hostdisk//dev/sdb (+1921880064,31643648) into md/1 (mdraid1x) grub-probe: info: Inserting hostdisk//dev/sdb (+1921880064,31643648) into md/1 (mdraid1x) . grub-core/kern/disk.c:196: Opening `hostdisk//dev/sdb'... grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-core/partmap/dfly.c:69: bad magic (found 0x0; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x0; wanted 0x4552) grub-core/partmap/dfly.c:69: bad magic (found 0x20494645; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0xeb63; wanted 0x4552) grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/partmap/gpt.c:93: Read a valid GPT header grub-core/partmap/gpt.c:115: GPT entry 0: start=34, length=4062 grub-probe: info: Partition 0 starts from 34. grub-core/partmap/dfly.c:69: bad magic (found 0x821cea; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x52e8; wanted 0x4552) grub-core/partmap/gpt.c:115: GPT entry 1: start=4096, length=1921875968 grub-probe: info: Partition 1 starts from 4096. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-probe: info: /dev/md0 is not present. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-probe: info: changing current directory to /dev. grub-probe: info: changing current directory to snd. grub-probe: info: changing current directory to mqueue. grub-probe: info: changing current directory to hugepages. grub-probe: info: changing current directory to shm. grub-probe: info: changing current directory to disk. grub-probe: info: changing current directory to by-uuid. grub-probe: info: changing current directory to by-partuuid. grub-probe: info: changing current directory to by-partlabel. grub-probe: info: changing current directory to by-id. grub-probe: info: changing current directory to by-path. grub-probe: info: changing current directory to dri. grub-probe: info: changing current directory to by-path. grub-probe: info: /dev/sdb2 is present. grub-probe: info: Looking for /dev/sdb2. grub-probe: info: /dev/sdb is a parent of /dev/sdb2. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-probe: info: /dev/sdb2 starts from 4096. grub-probe: info: opening the device hostdisk//dev/sdb. grub-core/kern/disk.c:196: Opening `hostdisk//dev/sdb'... grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-core/kern/disk.c:196: Opening `hostdisk//dev/sdb'... grub-probe: info: drive = 0. grub-probe: info: the size of hostdisk//dev/sdb is 1953525168. grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:420: opening the device `/dev/sdb' in open_device() grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-core/partmap/gpt.c:93: Read a valid GPT header grub-core/partmap/gpt.c:115: GPT entry 0: start=34, length=4062 grub-core/partmap/gpt.c:115: GPT entry 1: start=4096, length=1921875968 grub-core/partmap/gpt.c:115: GPT entry 2: start=1921880064, length=31643648 grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-core/partmap/gpt.c:93: Read a valid GPT header grub-core/partmap/gpt.c:115: GPT entry 0: start=34, length=4062 grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid1x devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09 devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for mdraid09_be devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for dmraid_nv devices on disk hostdisk//dev/sdb. grub-probe: info: Scanning for ldm devices on disk hostdisk//dev/sdb. grub-probe: info: scanning hostdisk//dev/sdb for LDM. grub-probe: info: no LDM signature found. grub-probe: info: Scanning for lvm devices on disk hostdisk//dev/sdb. grub-probe: info: no LVM signature found. grub-core/partmap/dfly.c:69: bad magic (found 0x821cea; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x52e8; wanted 0x4552) grub-core/partmap/gpt.c:115: GPT entry 1: start=4096, length=1921875968 grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-core/partmap/dfly.c:69: bad magic (found 0x0; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x0; wanted 0x4552) grub-core/partmap/gpt.c:115: GPT entry 2: start=1921880064, length=31643648 grub-core/disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb grub-probe: info: Scanning for DISKFILTER devices on disk hostdisk//dev/sdb. grub-core/partmap/dfly.c:69: bad magic (found 0x0; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x0; wanted 0x4552) grub-core/partmap/dfly.c:69: bad magic (found 0x20494645; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0xeb63; wanted 0x4552) grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/partmap/gpt.c:93: Read a valid GPT header grub-core/partmap/gpt.c:115: GPT entry 0: start=34, length=4062 grub-probe: info: Partition 0 starts from 34. grub-core/partmap/dfly.c:69: bad magic (found 0x821cea; wanted 0xc4464c59) grub-core/partmap/apple.c:120: bad magic (found 0x52e8; wanted 0x4552) grub-core/partmap/gpt.c:115: GPT entry 1: start=4096, length=1921875968 grub-probe: info: Partition 1 starts from 4096. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-probe: info: /dev/md0 is not present. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-probe: info: opening mduuid/a69ca2d5902fc179787bbdd3be2c721f. grub-core/kern/disk.c:196: Opening `mduuid/a69ca2d5902fc179787bbdd3be2c721f'... grub-core/kern/fs.c:56: Detecting zfs... grub-core/osdep/hostdisk.c:420: opening the device `/dev/sdb' in open_device() grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/fs/zfs/zfs.c:1199: label ok 0 grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/fs/zfs/zfs.c:1199: label ok 1 grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/fs/zfs/zfs.c:1199: label ok 2 grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/fs/zfs/zfs.c:1199: label ok 3 grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/kern/fs.c:78: zfs detection failed. grub-core/kern/fs.c:56: Detecting xfs... grub-core/fs/xfs.c:937: Reading sb grub-core/fs/xfs.c:276: Validating superblock grub-core/kern/fs.c:78: xfs detection failed. grub-core/kern/fs.c:56: Detecting ufs2... grub-core/kern/fs.c:78: ufs2 detection failed. grub-core/kern/fs.c:56: Detecting ufs1_be... grub-core/kern/fs.c:78: ufs1_be detection failed. grub-core/kern/fs.c:56: Detecting ufs1... grub-core/kern/fs.c:78: ufs1 detection failed. grub-core/kern/fs.c:56: Detecting udf... grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/kern/fs.c:78: udf detection failed. grub-core/kern/fs.c:56: Detecting tarfs... grub-core/kern/fs.c:78: tarfs detection failed. grub-core/kern/fs.c:56: Detecting squash4... grub-core/kern/fs.c:78: squash4 detection failed. grub-core/kern/fs.c:56: Detecting sfs... grub-core/kern/fs.c:78: sfs detection failed. grub-core/kern/fs.c:56: Detecting romfs... grub-core/kern/fs.c:78: romfs detection failed. grub-core/kern/fs.c:56: Detecting reiserfs... grub-core/kern/fs.c:78: reiserfs detection failed. grub-core/kern/fs.c:56: Detecting procfs... grub-core/kern/fs.c:78: procfs detection failed. grub-core/kern/fs.c:56: Detecting odc... grub-core/kern/fs.c:78: odc detection failed. grub-core/kern/fs.c:56: Detecting ntfs... grub-core/kern/fs.c:78: ntfs detection failed. grub-core/kern/fs.c:56: Detecting nilfs2... grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/kern/fs.c:78: nilfs2 detection failed. grub-core/kern/fs.c:56: Detecting newc... grub-core/kern/fs.c:78: newc detection failed. grub-core/kern/fs.c:56: Detecting minix_be... grub-core/kern/fs.c:78: minix_be detection failed. grub-core/kern/fs.c:56: Detecting minix3_be... grub-core/kern/fs.c:78: minix3_be detection failed. grub-core/kern/fs.c:56: Detecting minix3... grub-core/kern/fs.c:78: minix3 detection failed. grub-core/kern/fs.c:56: Detecting minix2_be... grub-core/kern/fs.c:78: minix2_be detection failed. grub-core/kern/fs.c:56: Detecting minix2... grub-core/kern/fs.c:78: minix2 detection failed. grub-core/kern/fs.c:56: Detecting minix... grub-core/kern/fs.c:78: minix detection failed. grub-core/kern/fs.c:56: Detecting jfs... grub-core/kern/fs.c:78: jfs detection failed. grub-core/kern/fs.c:56: Detecting iso9660... grub-core/kern/fs.c:78: iso9660 detection failed. grub-core/kern/fs.c:56: Detecting hfsplus... grub-core/kern/fs.c:78: hfsplus detection failed. grub-core/kern/fs.c:56: Detecting hfs... grub-core/kern/fs.c:78: hfs detection failed. grub-core/kern/fs.c:56: Detecting fat... grub-core/kern/fs.c:78: fat detection failed. grub-core/kern/fs.c:56: Detecting f2fs... grub-core/kern/fs.c:78: f2fs detection failed. grub-core/kern/fs.c:56: Detecting ext2... grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' grub-core/osdep/hostdisk.c:399: reusing open device `/dev/sdb' ext2 grub-core/kern/disk.c:295: Closing `mduuid/a69ca2d5902fc179787bbdd3be2c721f'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'. grub-core/kern/disk.c:295: Closing `hostdisk//dev/sdb'.
