A.S._id Posted March 21, 2017 Share #76 Posted March 21, 2017 officeboy said: Just wanted to chime in and say that downgrade does not appear to work from 6.1. Works great, just made a downgrade (clean migration without saving settings) using the script from 6.1 on 6.0.2 ... SCRIPT Download via Download Station into any folder and extract zip HOW TO as@as-P5KC ~ $ ssh admin@172.16.200.129 admin@172.16.200.129's password: admin@vDiskStation:/$ sudo -s Password: sh-4.3# /volume1/user/dwngrd.sh Downgrade for DSM Current version DSM majorversion="6" minorversion="0" productversion="6.0.2" buildphase="hotfix" buildnumber="8451" smallfixnumber="0" builddate="2016/08/17" buildtime="05:10:40" Insert new majorversion 5 Insert new minorversion 2 Insert new buildnumber 5967 Now DiskStation will power off. Flash new bootimg on boot device and continue migration in browser Press Enter to shutdown DiskStation or Ctrl+C to abort the shutdown Broadcast message from admin@vDiskStation (/dev/pts/1) at 21:36 ... The system is going down for power off NOW! sh-4.3# Connection to 172.16.200.129 closed by remote host. Connection to 172.16.200.129 closed. Hide Quote Link to comment Share on other sites More sharing options...
djelusion Posted May 15, 2017 Share #77 Posted May 15, 2017 On 3/21/2017 at 8:12 PM, A.S._id said: Works great, just made a downgrade (clean migration without saving settings) using the script from 6.1 on 6.0.2 ... SCRIPT Download via Download Station into any folder and extract zip HOW TO as@as-P5KC ~ $ ssh admin@172.16.200.129 admin@172.16.200.129's password: admin@vDiskStation:/$ sudo -s Password: sh-4.3# /volume1/user/dwngrd.sh Downgrade for DSM Current version DSM majorversion="6" minorversion="0" productversion="6.0.2" buildphase="hotfix" buildnumber="8451" smallfixnumber="0" builddate="2016/08/17" buildtime="05:10:40" Insert new majorversion 5 Insert new minorversion 2 Insert new buildnumber 5967 Now DiskStation will power off. Flash new bootimg on boot device and continue migration in browser Press Enter to shutdown DiskStation or Ctrl+C to abort the shutdown Broadcast message from admin@vDiskStation (/dev/pts/1) at 21:36 ... The system is going down for power off NOW! sh-4.3# Connection to 172.16.200.129 closed by remote host. Connection to 172.16.200.129 closed. Hide excellent idea, but what if you cant even access your NAS period? especially using Juns boot loader. I suggest we start a new thread and title it downgrade from 6.1. I will post it and make my comments Quote Link to comment Share on other sites More sharing options...
A.S._id Posted May 19, 2017 Share #78 Posted May 19, 2017 On 5/15/2017 at 7:15 PM, djelusion said: excellent idea, but what if you cant even access your NAS period? especially using Juns boot loader. I suggest we start a new thread and title it downgrade from 6.1. I will post it and make my comments If you can't even access to NAS, you can extract HDDs from device, connect to BB (any os, the same download NAS via boot flash with ubuntu installer), open HDDs any disk editor and format the first partition from start of disk on every HDD. Then assistant to show "not installed" and you can install DSM at zero. Quote Link to comment Share on other sites More sharing options...
IG-88 Posted May 19, 2017 Share #79 Posted May 19, 2017 if you just want to "empty" your disks completly you can overwrite the master boot record in a instant and it looks like the disk has no partitions/data - !!! ALL data volumes on the disk will be gone, no old data at all after installing dsm !!!! dd if=/dev/zero of=/dev/sda bs=512 count=1 (writes zero's in the first 512 byte block of sda) continue with sdb and so on and after less then a minute everything is unusable/gone if you have more time and want to clean up properly (overwrite all sectors of the disk with zero) dd if=/dev/zero of=/dev/sda Quote Link to comment Share on other sites More sharing options...
1450 Posted June 18, 2017 Share #80 Posted June 18, 2017 On 5/19/2017 at 6:27 AM, A.S._id said: If you can't even access to NAS, you can extract HDDs from device, connect to BB (any os, the same download NAS via boot flash with ubuntu installer), open HDDs any disk editor and format the first partition from start of disk on every HDD. Then assistant to show "not installed" and you can install DSM at zero. Remove all but 1 drive incase you screw something up, boot into Ubuntu live USB - mount the system partition and edit the /etc.defaults/version file - save your changes and reboot. Synology assistant or find.synology.com should detect the NAS as migrateable and you can then select the PAT file to install. I was stupid and upgraded to 6.0.3 on my N54L and had to use this to recover. Once the system has started, it will detect the system partitions are damaged on the other drives - so you need to click the Repair option but thats about it - no data loss. Quote Link to comment Share on other sites More sharing options...
mariad Posted June 29, 2017 Share #81 Posted June 29, 2017 On 6/19/2017 at 0:49 AM, 1450 said: Remove all but 1 drive incase you screw something up, boot into Ubuntu live USB - mount the system partition and edit the /etc.defaults/version file - save your changes and reboot. Synology assistant or find.synology.com should detect the NAS as migrateable and you can then select the PAT file to install. I was stupid and upgraded to 6.0.3 on my N54L and had to use this to recover. Once the system has started, it will detect the system partitions are damaged on the other drives - so you need to click the Repair option but thats about it - no data loss. Do i need to make the similar process since i am not on ubuntu but windows. Quote Link to comment Share on other sites More sharing options...
Polanskiman Posted June 29, 2017 Share #82 Posted June 29, 2017 2 hours ago, mariad said: Do i need to make the similar process since i am not on ubuntu but windows. Make a Ubuntu Live USB. See my signature for tutorial on how to access the system partition Quote Link to comment Share on other sites More sharing options...
Olivier Posted August 1, 2017 Share #83 Posted August 1, 2017 On 18/06/2017 at 9:49 PM, 1450 said: Remove all but 1 drive incase you screw something up, boot into Ubuntu live USB - mount the system partition and edit the /etc.defaults/version file - save your changes and reboot. Synology assistant or find.synology.com should detect the NAS as migrateable and you can then select the PAT file to install. I was stupid and upgraded to 6.0.3 on my N54L and had to use this to recover. Once the system has started, it will detect the system partitions are damaged on the other drives - so you need to click the Repair option but thats about it - no data loss. Same case as you, I'm stuck with "recoverable" in DS assistant and can't make a fresh install nor choose a .pat file. So I'm interested in your solution but I can't mount any partition probably because it's "linux raid". How did you do? I have 5 HDD in my N54L and I wouldn't like to lose data. In case of despair, would it work to buy a DS1517? Quote Link to comment Share on other sites More sharing options...
djelusion Posted August 9, 2017 Share #84 Posted August 9, 2017 On 5/18/2017 at 11:27 PM, A.S._id said: If you can't even access to NAS, you can extract HDDs from device, connect to BB (any os, the same download NAS via boot flash with ubuntu installer), open HDDs any disk editor and format the first partition from start of disk on every HDD. Then assistant to show "not installed" and you can install DSM at zero. I actually gave up on this.. after spending close to almost 2-3 days 10 hours a day i pretty much said forget it.. it just doesn't work.. Quote Link to comment Share on other sites More sharing options...
djelusion Posted August 9, 2017 Share #85 Posted August 9, 2017 On 6/19/2017 at 2:49 AM, 1450 said: Remove all but 1 drive incase you screw something up, boot into Ubuntu live USB - mount the system partition and edit the /etc.defaults/version file - save your changes and reboot. Synology assistant or find.synology.com should detect the NAS as migrateable and you can then select the PAT file to install. I was stupid and upgraded to 6.0.3 on my N54L and had to use this to recover. Once the system has started, it will detect the system partitions are damaged on the other drives - so you need to click the Repair option but thats about it - no data loss. I had did this well the polanskiman method. I thought it worked in terms of fixing the issue but apparently no.. and believe it or not find.synology does not work anymore for my own personally bought synologys or the running fine xpeno running 5.2 still. I dont know what might have changed via synologys end but the find.syno simply doesnt work (no diskstations found in lan) Quote Link to comment Share on other sites More sharing options...
Olivier Posted August 9, 2017 Share #86 Posted August 9, 2017 Hello I might be doubling down previous posts that state the same, so sorry if it's the case, no time for checking right now. I followed those guides to fix the mess that occurred during a failed upgrade: https://www.synology.com/fr-fr/knowledgebase/DSM/tutorial/Storage/How_can_I_recover_data_from_my_DiskStation_using_a_PC it's french but you should be OK (and learn a little french never hurts ) and when partition recovered I also had trouble logging to the desktop, due to tight access rights, so this guide helped https://superuser.com/questions/1191594/cannot-log-in-to-dsm-synology-nas/1191644#1191644?newreg=c972006f3d724685859db47d837ef430 I wish you luck Quote Link to comment Share on other sites More sharing options...
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