[Q] efs mount error

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Hello,

I flashed MIUI and it was very buggy for me, all apps were crashing and so on. Then i decided to flash Darky 10.1.

Followed the tutorial without any issues, but after this i got no signal. Snooped around the OS and found out it did not see my sdcard. After booting in recovery mode I saw that it could not mount the efs partition.
If i try to mount it via shell i get:

# mount /dev/block/stl4 /efs
mount: mounting /dev/block/stl4 on /efs failed: Invalid argument

I unfortunetly have no backup of the efs partition.

Did anyone else experience this problem or has a fix for this?

Push. I have that problem too... I was on Darkys ROM for some months without any flashing problems. Now i wanted to change from Darkys ROM 10.1 (Gingerbread 2.3.4) to Galnet MIUI. I had to downgrade to Froyo and then install the CWM zip in CWM. This was NOT succesful. It always says "Installation aborted (Status 7)". Then i tried to install CyanogenMod 7.1. Upgraded to Gingerbread Stock with CWM 3 and when i first flashed it via ODIN the phone first booted in the standart Android CWM display (dont know the name sry). The phone automatically formated cache etc. but then it showed me 2 times "/efs is not mounted". I was able to boot and to open CWM but ALWAYS when i want to install ANY CWM ROM it shows me the message with Status 7 ...

How can i mount /efs again and make CWM ROM Flashing able again?

Thank you.