Had a problem getting my DM800 to initalize found this wee thread to be very useful
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Workaround / fix for harddisk formatting error in Dream Elite Image
After a lot of testing, I found out that the dream-elite team has deactivated a line in fstab which causes error when you want to format a new harddisk in your dreambox.
If you get an error while formatting the harddisk in your dreambox you can do the following trick to get your harddisk formatted:
1 .Open the file fstab with a linux-compatible editor (i used textpad).
fstab can be found in "/etc"
2. When you have opened it you will see something like this:
rootfs / auto defaults 1 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
usbfs /proc/bus/usb usbfs defaults 0 0
/dev/mtdblock2 /boot jffs2 ro 0 0
tmpfs /var tmpfs defaults 0 0
tmpfs /tmp tmpfs defaults 0 0
#/dev/sda1 /media/hdd auto defaults 0 0
3. Now remove the '#' so that it will be:
rootfs / auto defaults 1 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
usbfs /proc/bus/usb usbfs defaults 0 0
/dev/mtdblock2 /boot jffs2 ro 0 0
tmpfs /var tmpfs defaults 0 0
tmpfs /tmp tmpfs defaults 0 0
/dev/sda1 /media/hdd auto defaults 0 0
4. Put the edited fstab file back in /etc, give it rights 644 and restart your box.
5. After the restart, format your harddisk, it will format without errors.
6. Play some channel and do some time-shifting (pause/play etc)
7. I noticed that the mapping option in Dreamelite image doesn't work anymore when you remove the '#" so now change the fstab file back to original, give it rights 644 and put the # in front of that line again.
8. Restart your box again.
9. Map your harddisk.
Tested on a DM800 and a DM8000.