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dd if=/dev/null of=img5 bs=1 seek=2G dd if=/dev/null of=img6 bs=1 seek=2G mkfs.btrfs -d raid1 -m raid1 img5 img6 losetup /dev/loop4 img5 losetup /dev/loop5 img6 btrfs device scan mount -t btrfs /dev/loop4 dir umount dir losetup -d /dev/loop5 mount -t btrfs -o degraded /dev/loop4 dir umount dir losetup -d /dev/loop4 ioctl: LOOP_CLR_FD: Device or resource busy...

# uname -a Linux dhcppc1 3.0.1-xxxx-std-ipv6-64 #1 SMP Sun Aug 14 17:06:21 CEST 2011 x86_64 x86_64 x86_64 GNU/Linux mkdir test5 cd test5 dd if=/dev/null of=img5 bs=1 seek=2G dd if=/dev/null of=img6 bs=1 seek=2G losetup /dev/loop2 img5 losetup /dev/loop3 img6 mkfs.btrfs -d raid1 -m raid1 /dev/loop2 /dev/loop3 btrfs device scan btrfs filesystem show Label: none uuid: d7ba6c4e-04ed-49f5-88cd-8432c948e822 Total devices 2 FS bytes used 28.00KB devid 1 size 2.00GB used 437.50MB...

Hi, i think i found the reason for the boot failure in the definition of Extended Boot Records. https://en.wikipedia.org/wiki/Extended_boot_record#Values "Starting sector = relative offset between this EBR sector and the first sector of the logical partition. Note: This is often the same value for each EBR on the same hard disk; usually 63 for Windows XP or older." So if

...f wine wine-1.3.8, and now i have this problem: programs started with wine have a separate window and when im trying to minimize in icon they jump in the left corner of the desktop and not on the panel. Have a look at this screen Its like the window by wine are overtop the ubuntu window. http://img6.imageshack.us/i/icononthecorner.png/ http://img839.imageshack.us/i/windowabovethepanel.png/ Thanks in advice.

...-------- I created by help of fdisk this layout Device Boot Start End Sectors Size Id Type ebr_fdisk.img1 1 16 16 8K 83 Linux ebr_fdisk.img2 17 2047 2031 1015.5K 5 Extended ebr_fdisk.img5 64 192 129 64.5K 83 Linux ebr_fdisk.img6 200 264 65 32.5K 83 Linux Indeed the EBRs show relative block start addresses. At block 17, the EBR of partition 5 has as first partition slot (decimal): 0 1 2 0 131 3 4 0 47 0 0 0 129 0 0 0 We see at offset 8 the little endian number 47, rather than...

...f fdisk this layout > > Device Boot Start End Sectors Size Id Type > ebr_fdisk.img1 1 16 16 8K 83 Linux > ebr_fdisk.img2 17 2047 2031 1015.5K 5 Extended > ebr_fdisk.img5 64 192 129 64.5K 83 Linux > ebr_fdisk.img6 200 264 65 32.5K 83 Linux > > Indeed the EBRs show relative block start addresses. > > At block 17, the EBR of partition 5 has as first partition slot (decimal): > > 0 1 2 0 131 3 4 0 47 0 0 0 129 0 0 0 > > We see at offset 8 the l...