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when I try to configure the grub.cfg file I get an error message which says:
#grub-mkconfig -o /boot/grub/grub.cfg
generating grub.cfg...
found linux image:/boot/vmlinuz-linux...
found initrd image:/boot/initramfs-linux.img
[669.873050]EXT4-fs (sda4):unable to read superblock
[669.855533]SQUASHFS ERROR: can't find a SQUASHFS superblock on sda4
ext4 sda4 unable to read superblock [/quote]
there are two HD and the partitions are as below:
[quote]bash-4.2# fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512=512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x7df3d782
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 613730303 306864128 7 HPFS/NTFS/exFAT
/dev/sda2 613731195 789667839 87968322+ 5 Extended
/dev/sda3 789667840 933027839 71680000 83 Linux
/dev/sda4 933027840 976773119 21872640 83 Linux
/dev/sda5 613731258 688320989 37294866 83 Linux
/dev/sda6 688321053 789667839 50673393+ 83 Linux
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512=512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x94110a5e
Device Boot Start End Blocks Id System
/dev/sdb1 * 16065 148087169 74035552+ 83 Linux
/dev/sdb2 148087170 404661284 128287057+ 5 Extended
/dev/sdb3 404664320 478511103 36923392 83 Linux
/dev/sdb4 478512090 488392064 4939987+ 82 Linux swap
/dev/sdb5 148087233 292961339 72437053+ 83 Linux
/dev/sdb6 292961403 404661284 55849941 83 Linux
bash-4.2#]I am trying to install Arch on /dev/sda5 the /home is on the partition /dev/sdb6
If I uninstall os-prober the configuration is well succeeded
Thanks
Last edited by cezarrangel (2013-02-19 23:27:07)
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What problem are you trying to solve? You say that it works fine without os-prober so I'm not clear why that's not a solution.
Please use [code ][/code ] tags (without the spaces).
fstab? What's on sda4?
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1)the problem is: the coonfigutation of grub.cfg fails as shown
2)not to use os-prober is not a solution because I want that the configuration of the grub.cfg recognizes the other linux and ntfs systems that exist on the two HD
3)sda4 is the extended partition that contains sda5 and sda6 where I am trying to install Arch
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1)the problem is: the coonfigutation of grub.cfg fails as shown
2)not to use os-prober is not a solution because I want that the configuration of the grub.cfg recognizes the other linux and ntfs systems that exist on the two HD
3)sda4 is the extended partition that contains sda5 and sda6 where I am trying to install Arch
Not according to fdisk -l, it isn't.
Post fstab, grub.cfg.
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Cfr, thanks. Yes sda4 used to be the extended partition, please have a look what the fdisk -l output used to be:
root@darkstar:/home/cezar# fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x7df3d782
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 613730303 306864128 7 HPFS/NTFS/exFAT
/dev/sda2 789667840 933027839 71680000 83 Linux
/dev/sda3 933027840 976773119 21872640 83 Linux
/dev/sda4 613731195 789667839 87968322+ 5 Extended
/dev/sda5 613731258 688320989 37294866 83 Linux
/dev/sda6 688321053 789667839 50673393+ 83 Linux
Partition table entries are not in disk order
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512=512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x94110a5e
Device Boot Start End Blocks Id System
/dev/sdb1 * 16065 148087169 74035552+ 83 Linux
/dev/sdb2 404664320 478511103 36923392 83 Linux
/dev/sdb3 478512090 488392064 4939987+ 82 Linux swap
/dev/sdb4 148087170 404661284 128287057+ 5 Extended
/dev/sdb5 148087233 292961339 72437053+ 83 Linux
/dev/sdb6 292961403 404661284 55849941 83 Linux
Partition table entries are not in disk orderAs the partition table entries were not in disk order, I tried to fix it with
fdisk /dev/sda
Command (m for help): x
Expert command (m for help): f
Expert command (m for help): wafter that, the new fdisk -l output is
bash-4.2# fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512=512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x7df3d782
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 613730303 306864128 7 HPFS/NTFS/exFAT
/dev/sda2 613731195 789667839 87968322+ 5 Extended
/dev/sda3 789667840 933027839 71680000 83 Linux
/dev/sda4 933027840 976773119 21872640 83 Linux
/dev/sda5 613731258 688320989 37294866 83 Linux
/dev/sda6 688321053 789667839 50673393+ 83 Linux
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512=512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x94110a5e
Device Boot Start End Blocks Id System
/dev/sdb1 * 16065 148087169 74035552+ 83 Linux
/dev/sdb2 148087170 404661284 128287057+ 5 Extended
/dev/sdb3 404664320 478511103 36923392 83 Linux
/dev/sdb4 478512090 488392064 4939987+ 82 Linux swap
/dev/sdb5 148087233 292961339 72437053+ 83 Linux
/dev/sdb6 292961403 404661284 55849941 83 Linux
bash-4.2# there is not the warning Partition table entries are not in disk order. However, I think I have made a mess
and here is the fstab:
# /etc/fstab: static file system information
#
# <file system> <dir> <type> <options> <dump> <pass>
# UUID=85a58fc1-d84c-4433-bbcc-75a452480ad1 LABEL=boot
/dev/sda5/ext4rw,relatime,data=ordered 0 1
# UUID=31b7ad20-16b7-4308-b914-6121c193797d
/dev/sda6/home ext4 rw,relatime,data=ordered 0 2
# UUID=59504bb3-5c76-4580-9e29-d3ca782f5cbf LABEL=swap
/dev/sdb3 none swap defaults 0 0
the grub.cfg is like this:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN/etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 ad4103fa-d940-47ca-8506-301d8071
d467
else
search --no-floppy --fs-uuid --set=root ad4103fa-d940-47ca-8506-301d8071d467
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_input console
terminal_output gfxterm
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch GNU/Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo
kernel-true-ad4103fa-d940-47ca-8506-301d8071d467' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 ad4103fa-d940-47ca-8506-
301d8071d467
else
search --no-floppy --fs-uuid --set=root ad4103fa-d940-47ca-8506-301d8071d467
fi
echo 'Loading Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=ad4103fa-d940-47ca-8506-301d8071d467 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initramfs-linux.img
}
menuentry 'Arch GNU/Linux, with Linux core repo kernel (Fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_optio
n 'gnulinux-core repo kernel-fallback-ad4103fa-d940-47ca-8506-301d8071d467' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root='hd0,msdos5'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 ad4103fa-d940-47ca-8506-
301d8071d467
else
search --no-floppy --fs-uuid --set=root ad4103fa-d940-47ca-8506-301d8071d467
fi
echo 'Loading Linux core repo kernel ...'
linux /boot/vmlinuz-linux root=UUID=ad4103fa-d940-47ca-8506-301d8071d467 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initramfs-linux-fallback.img
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###Last edited by cezarrangel (2013-02-17 21:53:00)
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Please edit your post to use
[code ][/code ]tags!
Are the UUIDs in grub.cfg correct? They don't match the commented lines in fstab. You should probably switch fstab to using labels or UUIDs since references like /dev/sda may change from boot to boot.
Have you rebooted since last writing the partition table? Have you checked the table with fdisk since rebooting?
Last edited by cfr (2013-02-17 03:18:17)
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cfr, thanks again for your quick answer. I am sorry: please for me to obey you and edit my post could you kindly explain what does " mean? I apologize and thank you . I will edit as soon as I understand. I will try to edit in advance,ok? if it is not correct please tell me. thank you
1)ok you are correct Cfr. the new partition table in fact is not a mess. It arranged the wrong partition entries. so the entries changed. swap is not /dev/sdb3 any more, but /dev/sdb4 and the extended partition is not /dev/sdb4 any more, but /dev/sdb2. Only the logical partition are the same: sdb5 and sdb6 (inside sdb2). so I have made the changes in the fstab. but I will swithch everything to UUIDs.
2)Yes I have rebooted. the table now is always the same:
bash-4.2# fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x7df3d782
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 613730303 306864128 7 HPFS/NTFS/exFAT
/dev/sda2 613731195 789667839 87968322+ 5 Extended
/dev/sda3 789667840 933027839 71680000 83 Linux
/dev/sda4 933027840 976773119 21872640 83 Linux
/dev/sda5 613731258 688320989 37294866 83 Linux
/dev/sda6 688321053 789667839 50673393+ 83 Linux
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): [512 bytes]/[512 bytes]
IO size (minimum/optimal): [512 bytes]/[512 bytes]
Disk identifier: 0x94110a5e
Device Boot Start End Blocks Id System
/dev/sdb1 * 16065 148087169 74035552+ 83 Linux
/dev/sdb2 148087170 404661284 128287057+ 5 Extended
/dev/sdb3 404664320 478511103 36923392 83 Linux
/dev/sdb4 478512090 488392064 4939987+ 82 Linux swap
/dev/sdb5 148087233 292961339 72437053+ 83 Linux
/dev/sdb6 292961403 404661284 55849941 83 Linux
bash-4.2#well I will switch fstab and post the result here
Last edited by cezarrangel (2013-02-17 21:50:13)
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It is no use. I have edited fstab with UUID only
but the error message that is output when I apply
#grub-mkconfig -o /boot/grub/grub.cfg is always the same:
can't find SQUASH superblock on sda2
ext4-fs (sda2):unable to read superblock
can't find SQUASH superblock on sdb2
ext4-fs (sdb2):unable to read superblockI remark sda2 e sdb2 are both extended partitions as the table partition entries:
bash-4.2# fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512=512bytes
Sector size (logical/physical): 512bytes/512bytes
I/O size (minimum/optimal): 512bytes/512bytes
Disk identifier: 0x7df3d782
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 613730303 306864128 7 HPFS/NTFS/exFAT
/dev/sda2 613731195 789667839 87968322+ 5 Extended
/dev/sda3 789667840 933027839 71680000 83 Linux
/dev/sda4 933027840 976773119 21872640 83 Linux
/dev/sda5 613731258 688320989 37294866 83 Linux
/dev/sda6 688321053 789667839 50673393+ 83 Linux
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512=512bytes
Sector size (logical/physical): 512byte/512bytes
I/O size (minimum/optimal): 512bytes/512bytes
Disk identifier: 0x94110a5e
Device Boot Start End Blocks Id System
/dev/sdb1 * 16065 148087169 74035552+ 83 Linux
/dev/sdb2 148087170 404661284 128287057+ 5 Extended
/dev/sdb3 404664320 478511103 36923392 83 Linux
/dev/sdb4 478512090 488392064 4939987+ 82 Linux swap
/dev/sdb5 148087233 292961339 72437053+ 83 Linux
/dev/sdb6 292961403 404661284 55849941 83 LinuxLast edited by cezarrangel (2013-02-17 21:54:17)
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In fstab, you don't seem to have any spaces in the line for /.
To use [code ][/code ] tags, quote my message with an example and just see how I did it.
Can you mount the partitions correctly in the live environment?
Last edited by cfr (2013-02-17 15:47:35)
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In fstab, you don't seem to have any spaces in the line for /.
To use [code ][/code ] tags, quote my message with an example and just see how I did it.
Can you mount the partitions correctly in the live environment?
No the fstab is ok as below
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# UUID=85a58fc1-d84c-4433-bbcc-75a452480ad1 LABEL=boot
UUID=85a58fc1-d84c-4433-bbcc-75a452480ad1 / ext4
rw,relatime,data=ordered 0 1
# UUID=31b7ad20-16b7-4308-b914-6121c193797d
UUID=31b7ad20-16b7-4308-b914-6121c193797d /home ext4
rw,relatime,data=ordered 0 2
# UUID=513a1740-4f36-4476-a464-74d58cf2186f LABEL=swap
UUID=513a1740-4f36-4476-a464-74d58cf2186f none swap
defaults 0 0Yes, I can mount the partitions. for example, I mount sda5 (where is the installation I am doing) in /mnt/arch-new that I have created in sdb1 (#mkdir /mnt/arch-new #nano /mnt/arch-new/etc/fstab). that is how I can check the files of the new Arch in sda5.
Last edited by cezarrangel (2013-02-17 21:51:45)
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You should not have line breaks in those lines in fstab. For example:
UUID=85a58fc1-d84c-4433-bbcc-75a452480ad1 / ext4 rw,relatime,data=ordered 0 1must be all on one line.
Since os-prober is causing the issue, have you considered just adding custom entries for the OSs you want grub to recognise? In /etc/grub.d/40_custom, for example? I do know that os-prober can be kind of dumb - at least, that's my impression from reading people's problems using it.
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Thank you cfr. your suggestion was perfect. I have uninstalled os-prober. then I edited /etc/grub.d/40_custom followed by #grub-mkconfig -o /boot/grub/grub.cfg. now I can boot both ntfs partition and alll linux partitions by using the grub menu. the entries are like below.
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
#Arch-sda5
menuentry "Windows7"{
insmod ntfs
set root='(hd0,1)'
chainloader +1
}
menuentry "Slack-sda3"{
set root=(hd0,3)
linux /boot/vmlinuz root=/dev/sda3 ro quiet splash
}
menuentry "Arch-sda5"{
set root=(hd0,5)
linux /boot/vmlinuz-linux root=/dev/sda5 ro quiet splash
initrd /boot/initramfs-linux.img
}
menuentry "Slack-sdb1"{
set root=(hd1,1)
linux /boot/vmlinuz root=/dev/sdb1 ro quiet splash
}
menuentry "Arch-sdb5"{
set root=(hd1,5)
linux /boot/vmlinuz-linux root=/dev/sdb5 ro quiet splash
initrd /boot/initramfs-linux.img
"/mnt/sda5/etc/grub.d/40_custom" 35 lines, 947 charactershowever there are still two things I would like to fix : the grub menu shows two lines before the entries above (these lines reffer to "core linux..."). I would like to remove these two lines and only let the entries. Besides: is it possible to change the time I have to choose one of the options of the menu? If I do not choose anything after an amount of time the first line ("core linux....") is the automatic option. I would like to set the meny to stay "for ever" waiting for my choice.
Which file should I edit in order to get rid of these two lines and to set the choice time as "for ever"?
Last edited by cezarrangel (2013-02-19 11:02:02)
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/etc/default/grub
See the grub wiki page for information about the various options.
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thank you for all.
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