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I have Ubuntu installed on an ext4 partition and Arch installed on some other logical partiotions in an extended partition. There is no problem when I only use one system of both, but when I use them alternatedly the following happends:

  • Case A: Use Ubuntu first, then start Arch: On booting Arch, boot fails at some point and the system says there is something wrong with the home partition. This can be easily fixed with fsck.
  • Case B: Use Arch first, then start Ubuntu: On booting, Ubuntu displays something with hard drive checks, maybe it takes a little longer to boot, but then starts normally.

Why is this happening? How to fix it?


  • This shows the partitioning in GParted:

    enter image description here

/etc/fstab of Ubuntu:

# /etc/fstab: static file system information.
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda8 during installation
UUID=bbd528b3-5e5e-4b33-aabd-b386c43b7347 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda9 during installation
#UUID=4329a4c7-2ee3-43a6-b353-f83e24047122 none            swap    sw              0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
/dev/mapper/cryptswap1 none swap sw 0 0

# Dateien: /dev/sda3: LABEL="Dateien" UUID="71B500522BEFD2C2" TYPE="ntfs"
# diabled becuase it mounts itselfs again: /dev/sda3 /media/sda3 ntfs auto 0 0

UUID=71B500522BEFD2C2 /media/Dateien ntfs defaults,nls=utf8,uid=1000,umask=000,windows_names 0 0
  • Arch is sda[6-9]
  • Ubuntu is sda2


/etc/fstab of Arch:

# /etc/fstab: static file system information
# <file system> <dir>   <type>  <options>   <dump>  <pass>
tmpfs       /tmp    tmpfs   nodev,nosuid    0   0
#/dev/sda5 swap swap defaults 0 0
#LABEL=/ / ext3 defaults 0 1
#LABEL=/boot /boot ext2 defaults 0 1
#LABEL=/home /home ext3 defaults 0 1
#LABEL=/opt /opt ext3 defaults 0 1

#/dev/sda5 swap swap defaults 0 0
UUID=0d4af9ca-1654-4153-9367-d547fdf95fb9 swap swap defaults 0 0

#LABEL=/ / ext3 defaults 0 1
UUID=551c8fda-808b-4292-9549-a7b001f11b52 / ext3 defaults 0 1

#LABEL=/boot /boot ext2 defaults 0 1
UUID=d56c00ec-3373-40c8-ba79-b871a778c60a /boot ext2 defaults 0 1

#LABEL=/home /home ext3 defaults 0 1
UUID=d9b0fc01-8a85-48ed-86e6-25a1ef1f2521 /home ext3 defaults 0 1  

#LABEL=/opt /opt ext3 defaults 0 1
UUID=0ef3c4db-9026-4081-a84a-db12c7a5b5bf /opt ext3 defaults 0 1
share|improve this question
It seems to me either both systems do not currect unmount some partition at shutdown time or you have a corrupted partition table. Could you post the contents of /etc/fstab of both systems and your partition table? – Oct 18 '11 at 16:55
Yeah, uncorrect unmounting could be the reason, Arch also said something like that on boot... I added the /etc/fstab files and a picture showing the partitioning. Hope this makes is clearer. – user905686 Oct 20 '11 at 18:17
The fstab of Arch listed a home partition mounted at /home that does not seem to be in the screenshot. Is that sda9 which is shown as "unbekannt" in GParted? You may need to manually verify if that partitions parameters are correct and maybe manually run e2fsck on it. – Oct 20 '11 at 18:44

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