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Table des matières

Working devices
Not working
OS6 Installation instructions
Downgrade instructions
Caveats

Netgear has decided to not support anything newer then RAIDiator 4.2 on what they consider 'Legacy' x86 NAS devices. It is however possible to run ReadyNAS OS6 on the majority of them, with some caveats.

WARNING: running OS6 on these legacy boxes is not supported by Netgear, if you need to call support you will first have to return your ReadyNAS to a supported state!

Working devices

Netgear ReadyNAS 2100v2
Netgear ReadyNAS Pro Pioneer Edition
Netgear ReadyNAS Pro Business Edition
Netgear ReadyNAS Pro 2
Netgear ReadyNAS Pro 4
Netgear ReadyNAS Pro 6
Netgear ReadyNAS Ultra 2
Netgear ReadyNAS Ultra 2 Plus
Netgear ReadyNAS Ultra 4
Netgear ReadyNAS Ultra 4 Plus
Netgear ReadyNAS Ultra 6
Netgear ReadyNAS Ultra 6 Plus

Not working

These models do not work with OS6, because they have 32bit processors, and OS6 is only 64bit.

Netgear ReadyNAS NVX
Netgear ReadyNAS 2100v1
Netgear ReadyNAS 1500

OS6 Installation instructions

WARNING: Installing OS6 will require a complete factory reset and creating a new filesystem. As such it is critical that you first make a backup of any data before starting the upgrade!

Instructions courtesy of AMRivlin and chirpa

BACKUP, BACKUP, BACKUP
Download PREP4TOR6 https://mega.nz/#!jT5XySbC!QjfDoH-hH8lTH6f6I3Q6cOaSnwZWqIX7kwkDR9HdZX4
Upload it using the ReadyNAS web gui firmware update, but do not reboot afterwards (avoids the need to do manual factory resets)
Download R4toR6 https://mega.nz/#!LXQEgIbD!o8kLBz8YEjJfG2qoDWadHWXDR25RXrBv5QH7ixx14jw
Upload it using the ReadyNAS web gui firmware update
After you upload the addon/firmware and reboot, it will update the firmware and start a factory default. Your system should be back up in less than 10 minutes running the new firmware.

For more detail, please see the following forum threads;

OS6 now works on x86 Legacy WARNING: NO NTGR SUPPORT!

ReadyNAS OS 6.1.9 - Run on existing x86 (4.2) #notsupported

Downgrade instructions

WARNING: Just like upgrading to ReadyNAS OS6, downgrading to RAIDiator 4.2 will cause you to have to do a factory reset and recreating your filesystems. So any data on the ReadyNAS will be lost, and a backup of any data is essential!

A ready made downgrade image (RAIDiator-x86-4.2.xx-downgrade) is now available: https://mega.nz/#!STgTGCBK!FmxBsvQeJTr6qQ0mBRH1AFRQg87TQlCN_roCM3ZqZzk

If you want to make your own image basically you will need to download an old RAIDiator release, and modify the header, such that the currently installed OS thinks it is newer, or it will not allow a downgrade.

Instructions (to be run from a Linux system, or directly on the NAS itself).

$ wget -q http://www.downloads.netgear.com/files/GDC/RNDU2000/RAIDiator-x86-4.2.24.zip
$ unzip RAIDiator-x86-4.2.24.zip 
Archive:  RAIDiator-x86-4.2.24.zip
  inflating: RAIDiator-x86-4.2.24    
  inflating: RAIDiator-x86-V4.2.24_ReleaseNote.html
$ head -n1 RAIDiator-x86-4.2.24
$ echo -n 'info::name=ReadyNASOS,version=6.2.0,time=1372729316,size=56387584,md5sum=5a29e74205983247ba50358a453c9ef2,arch=x86_64,descr=ReadyNAS Final Release,release_notes=http://www.readynas.com/RAIDiator_x86_4_2_24_Notes' > newhead
$ dd if=newhead of=RAIDiator-x86-4.2.24 conv=notrunc
 0+1 records in
 0+1 records out
 209 bytes (209 B) copied, 0.000162523 s, 1.3 MB/s

So basically what we have done, is modify the header, which is only used by the installed OS version to verify if the image is valid, to make it think it is installing a newer version of itself. The fields we have changed are name, version and arch.

You now upload the image to FrontView on ReadyNAS OS6, and it should accept it. After update and a reboot, you need to do factory default in boot menu. A few minutes afterwards, you will be running RAIDiator 4.2 again and you can recreate your storage.

Caveats

Netgear will never be held responsible/your warranty is void
A format is required (new FS and OS)
Possible issues with Wake-on-LAN (WOL)
If serial number of your unit is the MAC address (was the case with some old ReadyNAS Pro units) then ReadyCLOUD won't work.

Retrieved from http://netgear.nas-central.org/wiki/OS6_on_Legacy_x86