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Forum Discussion
Recovery after power supply failure
Hello forum --- I had a ReadyNAS RND4000 which experienced "the power supply problem". It had two 2TB drives, so 2TB of dual-redundant storage total. Netgear tech support promptly got me a new chas...
The "ERR: BAD FIRMWARE" appearing has multiple possible causes. Here are some examples:
1. Due to the power failure the OS on the disks got corrupted. An OS Re-install from the flash onto the disks should fix this
2. Problem with RAID and/or disks and OS partition won't mount
3. OS on flash is corrupt, possibly as well as the OS on the disks. USB Boot Recovery to load a good copy of the firmware onto the flash followed by OS Re-install to load that onto the disks would fix. I would not suggest trying a USB Boot Recovery as this is unlikely to be the problem in your case as you could get the system up doing a factory default.
1 is more likely than 2 and 3.
When you connect the disks up to your Linux PC I would suggest cloning the disks e.g. using dd_rescue before attempting data recovery. Also note if using X-RAID with two disks you could only use disk 1 for data recovery as disk 2 does not have the partition table on it.
After cloning the disks you could put the clone(s) of the disk(s) that still have your data in the NAS and try an OS Re-install. If it doesn't work you still have your original available for data recovery.
1. Due to the power failure the OS on the disks got corrupted. An OS Re-install from the flash onto the disks should fix this
2. Problem with RAID and/or disks and OS partition won't mount
3. OS on flash is corrupt, possibly as well as the OS on the disks. USB Boot Recovery to load a good copy of the firmware onto the flash followed by OS Re-install to load that onto the disks would fix. I would not suggest trying a USB Boot Recovery as this is unlikely to be the problem in your case as you could get the system up doing a factory default.
1 is more likely than 2 and 3.
When you connect the disks up to your Linux PC I would suggest cloning the disks e.g. using dd_rescue before attempting data recovery. Also note if using X-RAID with two disks you could only use disk 1 for data recovery as disk 2 does not have the partition table on it.
After cloning the disks you could put the clone(s) of the disk(s) that still have your data in the NAS and try an OS Re-install. If it doesn't work you still have your original available for data recovery.
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