Cannot install GRUB.

"parted" shows my partition table as follows:
Number Start End Size Type File system Flags
1 1049kB 106MB 105MB primary ntfs boot
2 106MB 64.9GB 64.8GB primary ntfs
4 64.9GB 456GB 391GB extended lba
8 64.9GB 96.3GB 31.4GB logical ext4
9 96.3GB 101GB 4277MB logical linux-swap(v1)
7 101GB 105GB 4273MB logical linux-swap(v1)
5 105GB 327GB 222GB logical ntfs
6 327GB 456GB 129GB logical ntfs
3 456GB 500GB 44.4GB primary ext4
While fdisk shows my partition table as follows:
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sda2 206848 126852290 63322721+ 7 HPFS/NTFS/exFAT
/dev/sda3 890126748 976772663 43322958 7 HPFS/NTFS/exFAT
/dev/sda4 126853118 890123492 381635187+ f W95 Ext'd (LBA)
/dev/sda5 204812685 638648009 216917662+ 7 HPFS/NTFS/exFAT
/dev/sda6 638648073 890123492 125737710 7 HPFS/NTFS/exFAT
/dev/sda7 196450304 204795903 4172800 82 Linux swap / Solaris
/dev/sda8 126853120 188086271 30616576 83 Linux
/dev/sda9 188088320 196442111 4176896 82 Linux swap / Solaris
Partition table entries are not in disk order
I have two linux partition installed at
/dev/sda3 -> Arch Liuxx
/dev/sda8 -> Ubuntu.
GRUB is installed at ubuntu (version 2 grub).
- First of all, why is fdisk not able to detect a ext4 partition. It only shows one partition as Linux ie /dev/sda8.
- When I try to install grub by booting to live CD and I type $root (hd0,3), it shows unknown partition 0xf. Even if I use tabs to do autocomplete, I get this
grub> root (hd0,
Possible partitions are:
Partition num: 0, Filesystem type unknown, partition type 0x7
Partition num: 1, Filesystem type unknown, partition type 0x7
Partition num: 2, Filesystem type unknown, partition type 0x7
Partition num: 4, Filesystem type unknown, partition type 0x7
Partition num: 5, Filesystem type unknown, partition type 0x7
Partition num: 6, Filesystem type unknown, partition type 0x82
Partition num: 7, Filesystem type is ext2fs, partition type 0x83
Partition num: 8, Filesystem type unknown, partition type 0x82
grub> root (hd0,
God  knows why it shows partition number 7 as ext2fs. I cannot choose either 8 or 3 partition
grub> root (hd0,3)
Filesystem type unknown, partition type 0xf
grub> root (hd0,8)
Filesystem type unknown, partition type 0x82
Also, I need to install grub on /dev/sda3 (my arch linux partition) which is currently on UBUNTU's partition so its also not able to find any boot files if I try to mount arch partition and do $root-install --root-directory=/mnt/myarchmounted --recheck /dev/sda.
So, how should I proceed?
TL/DR: I want a way to
- Format ubuntu partition and remove it completely (including its own grub)
- Install GRUB on Arch's partition, so that I can boot it after ubuntu's partition is removed.

shadyabhi wrote:
"parted" shows my partition table as follows:
Number Start End Size Type File system Flags
1 1049kB 106MB 105MB primary ntfs boot
2 106MB 64.9GB 64.8GB primary ntfs
4 64.9GB 456GB 391GB extended lba
8 64.9GB 96.3GB 31.4GB logical ext4
9 96.3GB 101GB 4277MB logical linux-swap(v1)
7 101GB 105GB 4273MB logical linux-swap(v1)
5 105GB 327GB 222GB logical ntfs
6 327GB 456GB 129GB logical ntfs
3 456GB 500GB 44.4GB primary ext4
While fdisk shows my partition table as follows:
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sda2 206848 126852290 63322721+ 7 HPFS/NTFS/exFAT
/dev/sda3 890126748 976772663 43322958 7 HPFS/NTFS/exFAT
/dev/sda4 126853118 890123492 381635187+ f W95 Ext'd (LBA)
/dev/sda5 204812685 638648009 216917662+ 7 HPFS/NTFS/exFAT
/dev/sda6 638648073 890123492 125737710 7 HPFS/NTFS/exFAT
/dev/sda7 196450304 204795903 4172800 82 Linux swap / Solaris
/dev/sda8 126853120 188086271 30616576 83 Linux
/dev/sda9 188088320 196442111 4176896 82 Linux swap / Solaris
Partition table entries are not in disk order
I have two linux partition installed at
/dev/sda3 -> Arch Liuxx
/dev/sda8 -> Ubuntu.
GRUB is installed at ubuntu (version 2 grub).
- First of all, why is fdisk not able to detect a ext4 partition. It only shows one partition as Linux ie /dev/sda8.
Type code of /dev/sda3 is wrong, it should be 0x83, not 0x07 (type code for FAT/NTFS partitions)
- When I try to install grub by booting to live CD and I type $root (hd0,3), it shows unknown partition 0xf. Even if I use tabs to do autocomplete, I get this
grub legacy numbers partitions from 0 , wherein (hd0,3) corresponds to /dev/sda4 (the extended partition in your disk). IN your case you should try (hd0,2) for /dev/sda3 (after changing the part type code to 0x83)
God  knows why it shows partition number 7 as ext2fs. I cannot choose either 8 or 3 partition
grub> root (hd0,3)
Filesystem type unknown, partition type 0xf
grub> root (hd0,8)
Filesystem type unknown, partition type 0x82
(hd0,7) == /dev/sda8 == ext4
(hd0,3) == /dev/sda4 == extended part
(hd0,8) == /dev/sda9 == linux swap
Also, I need to install grub on /dev/sda3 (my arch linux partition) which is currently on UBUNTU's partition so its also not able to find any boot files if I try to mount arch partition and do $root-install --root-directory=/mnt/myarchmounted --recheck /dev/sda.
So, how should I proceed?
TL/DR: I want a way to
- Format ubuntu partition and remove it completely (including its own grub)
- Install GRUB on Arch's partition, so that I can boot it after ubuntu's partition is removed.
Your question is not clear. But you can boot into Arch, install its grub2 package (recommended over grub legacy), install grub2 to /boot in Arch, and finally format ubuntu completely. Follow the Archwiki GRUB2 page. It explains everything.

Similar Messages

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  • [solved] Cannot complete install, grub fails to boot the new install

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    Rede wrote:
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  • [SOLVED]Unable to install grub "couldn't find /mnt/boot/grub/menu.lst"

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    Last edited by Misanthrope (2008-06-01 17:22:32)

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  • Where to install grub

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  • [RAID Install] Can't install Grub - SOLVED

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        unknown
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    I guess you are speaking about this Toshiba package:
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    ok, i'm starting to get agitated with this.
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    Quote
    Originally posted by REILLY875
    Do NOT try the 250 Watt PSU!!, As "Wonk" said if you happen to Blow it, the PSU will most likely Take out the Mo-Bo with it! And maybe the CPU to, due to the Voltage Spike you would get ...I would not put to much Credence into the fact that as of now the +12V and the +3.3V Rails are reading a little low,(I say this because it is indeed a ANTEC), as this could be the Monitoring Hardware, or the Software that might be reading wrong....If I where you I would First set the Memory Timings Manually to 3-4-4-7-8, And up the DRAM (VDIMM) Voltage to 2.7 Volts, and if it still wont Load, I would Definitly try a different DIMM Slot, and Rince and Repeat .....If you dont mind me asking , Why are you running with just 1 Module?....Is it on purpose or are you saving up for More?................Sean REILLY875
    yea, i dont plan to run the 250. im gonna wait for the new 480.
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  • Cannot install Windows 8.1 via Boot Camp on MBPr 13" Early 2013; tried almost everything.

    Hi guys,
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