Warning<\/h2>\n\n\n\nWarning, these are just my notes on how to convert a My Cloud OS 3 \/ My Cloud Mirror Gen 2 device to a \"real\" Debian system. You will need to take your device fully apart, solder wires and lose the warranty. Additionally you will lose all your data and even brick the hardware if something goes wrong, I am taking in no way responsibility, neither can I give support. You're on your own now.<\/p><\/blockquote>\n\n\n\n
Step 0: Get Serial Console Access<\/h2>\n\n\n\n
Without a serial console, you will not be able to do anything here. You will need to completely disassembly the NAS and will lose all warranty. The plain motherboard will look like this. On the most right side you will see the pins for the UART interface you will need to solder to.<\/p>\n\n\n\n![\"\"](\"https:\/\/i0.wp.com\/www.nico-maas.de\/wordpress\/wp-content\/uploads\/WDMCMG2_Top-1.jpg?resize=1024%2C1024&ssl=1\")
<\/a><\/figure>\n\n\n\nWhen you're done with that, connect your 3v3 TTL UART USB device like this:<\/p>\n\n\n\n![\"\"](\"https:\/\/i0.wp.com\/www.nico-maas.de\/wordpress\/wp-content\/uploads\/WDMCMG2_UART_Pinouts.jpg?resize=1024%2C768&ssl=1\")
<\/a><\/figure>\n\n\n\n... and connect to it via 115200 BAUD with Putty, TeraTerm Pro or any other software (Do not connect the 3v3 pin :)). It would be wise starting without the hard drives installed.<\/p>\n\n\n\n
Step 1: Flashing U-Boot<\/h2>\n\n\n\n
The current U-Boot on the NAS is flawed, you need to replace it. I will be CyberPK <\/a>here which did an awesome job explaining everything:<\/p>\n\n\n\nWe have to prepare an usb drive formatted in Fat32, and extract the uboot at link<\/a> into it and connect to usb port#2. <\/p>\n\n\n\nConnect the device to the serial adapter, poweron the device and start pressing '1' (one) during the boot until you can see the 'Marvell>>' Command Prompt
press ctrl+c
then<\/p>\n\n\n\n
We will start here to change stuff and break stuff. But if I could give you one tip before you start: Please execute printenv once. Copy and paste all env variables and everything Uboots spits out. It could save your hardware one day. Thanks, Nico out!<\/p><\/blockquote>\n\n\n\n
usb start\nbubt u-boot-a38x-GrandTeton_2014T3_PQ-nand.bin nand usb\nreset<\/code><\/pre>\n\n\n\nThis will reboot the device. Access again the Command prompt and add the following envs, a modified version of the ones provided by bodhi at this post:<\/p>\n\n\n\n
\nsetenv set_bootargs_stock 'setenv bootargs root=\/dev\/ram console=ttyS0,115200'\n\nsetenv bootcmd_stock 'echo Booting from stock ... ; run set_bootargs_stock; printenv bootargs; nand read.e 0xa00000 0x500000 0x500000;nand read.e 0xf00000 0xa00000 0x500000;bootm 0xa00000 0xf00000'\n\nsetenv bootdev 'usb'\n\nsetenv device '0:1'\n\nsetenv load_image_addr '0x02000020'\n\nsetenv load_initrd_addr '0x2900000'\n\nsetenv load_image 'echo loading Image ...; fatload $bootdev $device $load_image_addr \/boot\/uImage'\n\nsetenv load_initrd 'echo loading uInitrd ...; fatload $bootdev $device $load_initrd_addr \/boot\/uInitrd'\n\nsetenv usb_set_bootargs 'setenv bootargs \"console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 $mtdparts earlyprintk=serial init=\/bin\/systemd\"'\n\nsetenv bootcmd_usb 'echo Booting from USB ...; usb start; run usb_set_bootargs; if run load_image; then if run load_initrd; then bootm $load_image_addr $load_initrd_addr; else bootm $load_image_addr; fi; fi; usb stop'\n\nsetenv bootcmd 'setenv fdt_skip_update yes; setenv usbActive 0; run bootcmd_usb; setenv usbActive 1; run bootcmd_usb; setenv fdt_skip_update no; run bootcmd_stock; reset'\n\nsaveenv\n\nreset<\/code><\/pre>\n<\/div><\/div>\n\n\n\n(This code was also modified by me to use the fatload instead of the ext2load)<\/p>\n\n\n\n
With this, our NAS is ready.<\/p>\n\n\n\n
Step 2: Build a kernel and rootfs<\/h2>\n\n\n\n- On your current linux machine, get yourself a copy \/ git clone of Heisaths wdmc2-kernel Repo<\/a><\/li>
- Get all dependencies installed according to this repo, I installed it on a Debian 11 machine<\/li>
- Replace the file content of wdmc2-kernel\/dts\/armada-375-wdmc-gen2.dts with the content of the real and improved dts for the WDMCMG2 (original from this link<\/a>, copy available here<\/a>) - but keep the file name still armada-375-wdmc-gen2.dts<\/li>
- Replace the file content of wdmc2-kernel\/config\/linux-5.15.y.config with the file from here<\/a> (please know this config ain't perfect, but it will get you running. You can always file a PR and help me out ;))<\/li>
- Start the build process in wdmc2-kernel with .\/build.sh<\/li>
- Mark: Linux Kernel, Clean Kernel sources, Debian Rootfs, Enable ZRAM on rootfs<\/li>
- Kernel -> Kernel 5.15 LTS<\/li>
- Build initramfs -> Yes<\/li>
- Debian -> Bullseye<\/li>
- Fstab -> usb<\/li>
- Rootpw -> whateverYouWant<\/li>
- Hostname -> whateverYouWant<\/li>
- Locales -> no changes, accept (or whatever you want)<\/li>
- Default locale for system -> en_US.UTF-8 (or whatever you want)<\/li>
- Tzdata -> Your region<\/li>
- Now your kernel and rootfs will be build<\/li><\/ul>\n\n\n\n
While this is on-going, get yourself a nice USB 2.0 or USB 3.0 stick prepared with<\/p>\n\n\n\n
- partition table: msdos<\/li>
- 1st partition: 192 MB, FAT32, label set to boot, boot flag enabled<\/li>
- 2nd partition: rest, ext4, label set to rootfs<\/li><\/ul>\n\n\n\n
When the kernel is done compiling and your usb stick is done, copy all the files (sda is the name of my usb stick<\/p>\n\n\n\n
- mkdir \/mnt\/boot \/mnt\/root<\/li>
- mount \/dev\/sda1 \/mnt\/boot<\/li>
- mount \/dev\/sda2 \/mnt\/root<\/li>
- mkdir \/mnt\/boot\/boot<\/li>
- cp wdmc2-kernel\/output\/boot\/uImage-5.15.* \/mnt\/boot\/boot\/uImage<\/li>
- cp wdmc2-kernel\/output\/boot\/uRamdisk \/mnt\/boot\/boot\/uInitrd<\/li>
- tar -xvzf wdmc2-kernel\/output\/bullseye-rootfs.tar.gz --directory=\/mnt\/root\/<\/li>
- rm -rf \/mnt\/root\/etc\/fstab<\/li>
- cp \/mnt\/root\/etc\/fstab.usb \/mnt\/root\/etc\/fstab
\/\/ within \/mnt\/root\/etc\/fstab:
\/\/ change all \/dev\/sdb to \/dev\/sdc if all two drive slots on the NAS are used <- this!
\/\/ change all \/dev\/sdb to \/dev\/sda if no drive slots on the NAS are used<\/li> - umount \/mnt\/boot \/mnt\/root<\/li><\/ul>\n\n\n\n
Step 3: First boot and getting things running<\/h2>\n\n\n\n
Insert the USB stick into the 2 slot of the NAS. Leave the drives still out and boot it up for the first time, watch it via terminal. Login at the end with root and your chosen password.<\/p>\n\n\n\n
If it boots, you can shut it down again with shutdown -P now, unplug power, insert the drives and reboot.<\/p>\n\n\n\n
First thing after the first boot with drives, your own initramfs \/ Ramdisk from your current setup:<\/p>\n\n\n\n
- cd \/root\/<\/li>
- .\/build_initramfs.sh<\/li>
- cp initramfs\/uRamdisk \/boot\/boot\/uInitrd<\/li><\/ul>\n\n\n\n
Second, install MDADM for the RAID:<\/p>\n\n\n\n
- apt update<\/li>
- apt install mdadm<\/li>
- mkdir \/mnt\/HD<\/li>
- edit your \/etc\/fstab and add a mount point for your md\/raid. I used the old drives with my old data on it like this (depending on the fact as which mdX it launches...)<\/li><\/ul>\n\n\n\n
\/dev\/md0 \/mnt\/HD ext4 defaults,noatime,nodiratime,commit=600,errors=remount-ro 0 1\n <\/code><\/pre>\n\n\n\nA lot of good knowledge about Ramdrives can be found here<\/a>.<\/p>\n\n\n\nI would advise to do steps: 1. Folder2RAM, 2. Kernel Options, 4. Logrotate - option 3 did not work out for me.<\/p>\n\n\n\n
To get the drive to sleep at some point, we need to reconfigure MDADM<\/p>\n\n\n\n
dpkg-reconfigure mdadm\n\/\/ monthly check ok \n\/\/ daily degration check ok\n\/\/ monitoring disable<\/code><\/pre>\n\n\n\n... and get hdparm working<\/p>\n\n\n\n
apt install hdparm hd-idle\n\n# hdparm config\n, add in \/etc\/hdparm.conf \n\n\/dev\/sda {\n# apm = 127\n# acoustic_management = 127\n spindown_time = 120\n# spindown_time = 4\n write_cache = on\n}\n\n\/dev\/sdb {\n# apm = 127\n# acoustic_management = 127\n spindown_time = 120\n# spindown_time = 4\n write_cache = on\n}\n\n# Spindown Time means: 120 * 5 sec = 600 sec \/ 60 sec = 10 min\n# apply it after saving the file with:\n\/usr\/lib\/pm-utils\/power.d\/95hdparm-apm resume<\/code><\/pre>\n\n\n\nWe can check the status of the drives with smartctl<\/p>\n\n\n\n
smartctl -i -n standby \/dev\/sda\nsmartctl -i -n standby \/dev\/sdb<\/code><\/pre>\n\n\n\nTo get fan control working<\/p>\n\n\n\n
apt install wget\nwget -O mcm-fancontrol-master.tar.gz https:\/\/github.com\/nmaas87\/mcm-fancontrol\/archive\/refs\/heads\/master.tar.gz\ntar -xvzf mcm-fancontrol-master.tar.gz\ncd mcm-fancontrol-master\/\ncp fan-daemon.py \/usr\/sbin\/\nchmod +x \/usr\/sbin\/fan-daemon.py\ncp fan-daemon.service \/etc\/systemd\/system\/\nsystemctl enable fan-daemon\nsystemctl start fan-daemon<\/code><\/pre>\n\n\n\n(You can change low temp and high temp in the \/usr\/sbin\/fan-daemon.py<\/code> to get the Fan to kick in later and also set DEBUG = True <\/code>if you want to see some details in the systemctl status fan-daemon<\/code>)<\/p>\n\n\n\nMDT Utils can be useful, just mentioning it here<\/p>\n\n\n\n
apt install -y mtd-utils\ncat \/proc\/cmdline\ncat \/proc\/mtd<\/code><\/pre>\n\n\n\nSamba ...<\/p>\n\n\n\n
apt install samba --no-install-recommends\n# change \/etc\/samba\/smb.conf to your liking and setup your SMB<\/code><\/pre>\n\n\n\nPlex ...<\/p>\n\n\n\n
# Plex \napt update\napt install apt-transport-https ca-certificates curl gnupg2\ncurl https:\/\/downloads.plex.tv\/plex-keys\/PlexSign.key | apt-key add -\necho deb https:\/\/downloads.plex.tv\/repo\/deb public main | tee \/etc\/apt\/sources.list.d\/plexmediaserver.list\napt update\napt install plexmediaserver\nsystemctl status plexmediaserver\n<\/code><\/pre>\n\n\n\nWell, that's it.<\/p>\n\n\n\n
Thanks a lot to all awesome contributors in the net:<\/p>\n\n\n\n
- https:\/\/github.com\/Heisath\/wdmc2-kernel<\/a><\/li>
- https:\/\/github.com\/gisab\/WDMC-Ex2<\/a><\/li>
- https:\/\/github.com\/vzhilov\/WDMC-Ex2-Ultra<\/a><\/li>
- https:\/\/github.com\/Johns-Q\/wdmc-gen2<\/a><\/li>
- https:\/\/github.com\/Zeik0s\/wdmc-gen2<\/a><\/li><\/ul>\n\n\n\n
Companion repo with files: https:\/\/github.com\/nmaas87\/WDMCMG2<\/a><\/p>\n
Warning, these are just my notes on how to convert a My Cloud OS 3 \/ My Cloud Mirror Gen 2 device to a \"real\" Debian system. You will need to take your device fully apart, solder wires and lose the warranty. Additionally you will lose all your data and even brick the hardware if something goes wrong, I am taking in no way responsibility, neither can I give support. You're on your own now.<\/p><\/blockquote>\n\n\n\n
Step 0: Get Serial Console Access<\/h2>\n\n\n\n
Without a serial console, you will not be able to do anything here. You will need to completely disassembly the NAS and will lose all warranty. The plain motherboard will look like this. On the most right side you will see the pins for the UART interface you will need to solder to.<\/p>\n\n\n\n When you're done with that, connect your 3v3 TTL UART USB device like this:<\/p>\n\n\n\n ... and connect to it via 115200 BAUD with Putty, TeraTerm Pro or any other software (Do not connect the 3v3 pin :)). It would be wise starting without the hard drives installed.<\/p>\n\n\n\n The current U-Boot on the NAS is flawed, you need to replace it. I will be CyberPK <\/a>here which did an awesome job explaining everything:<\/p>\n\n\n\n We have to prepare an usb drive formatted in Fat32, and extract the uboot at link<\/a> into it and connect to usb port#2. <\/p>\n\n\n\n Connect the device to the serial adapter, poweron the device and start pressing '1' (one) during the boot until you can see the 'Marvell>>' Command Prompt We will start here to change stuff and break stuff. But if I could give you one tip before you start: Please execute printenv once. Copy and paste all env variables and everything Uboots spits out. It could save your hardware one day. Thanks, Nico out!<\/p><\/blockquote>\n\n\n\n This will reboot the device. Access again the Command prompt and add the following envs, a modified version of the ones provided by bodhi at this post:<\/p>\n\n\n\n (This code was also modified by me to use the fatload instead of the ext2load)<\/p>\n\n\n\n With this, our NAS is ready.<\/p>\n\n\n\n While this is on-going, get yourself a nice USB 2.0 or USB 3.0 stick prepared with<\/p>\n\n\n\n When the kernel is done compiling and your usb stick is done, copy all the files (sda is the name of my usb stick<\/p>\n\n\n\n Insert the USB stick into the 2 slot of the NAS. Leave the drives still out and boot it up for the first time, watch it via terminal. Login at the end with root and your chosen password.<\/p>\n\n\n\n If it boots, you can shut it down again with shutdown -P now, unplug power, insert the drives and reboot.<\/p>\n\n\n\n First thing after the first boot with drives, your own initramfs \/ Ramdisk from your current setup:<\/p>\n\n\n\n Second, install MDADM for the RAID:<\/p>\n\n\n\n A lot of good knowledge about Ramdrives can be found here<\/a>.<\/p>\n\n\n\n I would advise to do steps: 1. Folder2RAM, 2. Kernel Options, 4. Logrotate - option 3 did not work out for me.<\/p>\n\n\n\n To get the drive to sleep at some point, we need to reconfigure MDADM<\/p>\n\n\n\n ... and get hdparm working<\/p>\n\n\n\n We can check the status of the drives with smartctl<\/p>\n\n\n\n To get fan control working<\/p>\n\n\n\n (You can change low temp and high temp in the MDT Utils can be useful, just mentioning it here<\/p>\n\n\n\n Samba ...<\/p>\n\n\n\n Plex ...<\/p>\n\n\n\n Well, that's it.<\/p>\n\n\n\n Thanks a lot to all awesome contributors in the net:<\/p>\n\n\n\n Companion repo with files: https:\/\/github.com\/nmaas87\/WDMCMG2<\/a><\/p>\n<\/a><\/figure>\n\n\n\n<\/a><\/figure>\n\n\n\nStep 1: Flashing U-Boot<\/h2>\n\n\n\n
press ctrl+c
then<\/p>\n\n\n\nusb start\nbubt u-boot-a38x-GrandTeton_2014T3_PQ-nand.bin nand usb\nreset<\/code><\/pre>\n\n\n\nsetenv set_bootargs_stock 'setenv bootargs root=\/dev\/ram console=ttyS0,115200'\n\nsetenv bootcmd_stock 'echo Booting from stock ... ; run set_bootargs_stock; printenv bootargs; nand read.e 0xa00000 0x500000 0x500000;nand read.e 0xf00000 0xa00000 0x500000;bootm 0xa00000 0xf00000'\n\nsetenv bootdev 'usb'\n\nsetenv device '0:1'\n\nsetenv load_image_addr '0x02000020'\n\nsetenv load_initrd_addr '0x2900000'\n\nsetenv load_image 'echo loading Image ...; fatload $bootdev $device $load_image_addr \/boot\/uImage'\n\nsetenv load_initrd 'echo loading uInitrd ...; fatload $bootdev $device $load_initrd_addr \/boot\/uInitrd'\n\nsetenv usb_set_bootargs 'setenv bootargs \"console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 $mtdparts earlyprintk=serial init=\/bin\/systemd\"'\n\nsetenv bootcmd_usb 'echo Booting from USB ...; usb start; run usb_set_bootargs; if run load_image; then if run load_initrd; then bootm $load_image_addr $load_initrd_addr; else bootm $load_image_addr; fi; fi; usb stop'\n\nsetenv bootcmd 'setenv fdt_skip_update yes; setenv usbActive 0; run bootcmd_usb; setenv usbActive 1; run bootcmd_usb; setenv fdt_skip_update no; run bootcmd_stock; reset'\n\nsaveenv\n\nreset<\/code><\/pre>\n<\/div><\/div>\n\n\n\nStep 2: Build a kernel and rootfs<\/h2>\n\n\n\n
\/\/ within \/mnt\/root\/etc\/fstab:
\/\/ change all \/dev\/sdb to \/dev\/sdc if all two drive slots on the NAS are used <- this!
\/\/ change all \/dev\/sdb to \/dev\/sda if no drive slots on the NAS are used<\/li>Step 3: First boot and getting things running<\/h2>\n\n\n\n
\/dev\/md0 \/mnt\/HD ext4 defaults,noatime,nodiratime,commit=600,errors=remount-ro 0 1\n <\/code><\/pre>\n\n\n\ndpkg-reconfigure mdadm\n\/\/ monthly check ok \n\/\/ daily degration check ok\n\/\/ monitoring disable<\/code><\/pre>\n\n\n\napt install hdparm hd-idle\n\n# hdparm config\n, add in \/etc\/hdparm.conf \n\n\/dev\/sda {\n# apm = 127\n# acoustic_management = 127\n spindown_time = 120\n# spindown_time = 4\n write_cache = on\n}\n\n\/dev\/sdb {\n# apm = 127\n# acoustic_management = 127\n spindown_time = 120\n# spindown_time = 4\n write_cache = on\n}\n\n# Spindown Time means: 120 * 5 sec = 600 sec \/ 60 sec = 10 min\n# apply it after saving the file with:\n\/usr\/lib\/pm-utils\/power.d\/95hdparm-apm resume<\/code><\/pre>\n\n\n\nsmartctl -i -n standby \/dev\/sda\nsmartctl -i -n standby \/dev\/sdb<\/code><\/pre>\n\n\n\napt install wget\nwget -O mcm-fancontrol-master.tar.gz https:\/\/github.com\/nmaas87\/mcm-fancontrol\/archive\/refs\/heads\/master.tar.gz\ntar -xvzf mcm-fancontrol-master.tar.gz\ncd mcm-fancontrol-master\/\ncp fan-daemon.py \/usr\/sbin\/\nchmod +x \/usr\/sbin\/fan-daemon.py\ncp fan-daemon.service \/etc\/systemd\/system\/\nsystemctl enable fan-daemon\nsystemctl start fan-daemon<\/code><\/pre>\n\n\n\n\/usr\/sbin\/fan-daemon.py<\/code> to get the Fan to kick in later and also set DEBUG = True <\/code>if you want to see some details in the systemctl status fan-daemon<\/code>)<\/p>\n\n\n\napt install -y mtd-utils\ncat \/proc\/cmdline\ncat \/proc\/mtd<\/code><\/pre>\n\n\n\napt install samba --no-install-recommends\n# change \/etc\/samba\/smb.conf to your liking and setup your SMB<\/code><\/pre>\n\n\n\n# Plex \napt update\napt install apt-transport-https ca-certificates curl gnupg2\ncurl https:\/\/downloads.plex.tv\/plex-keys\/PlexSign.key | apt-key add -\necho deb https:\/\/downloads.plex.tv\/repo\/deb public main | tee \/etc\/apt\/sources.list.d\/plexmediaserver.list\napt update\napt install plexmediaserver\nsystemctl status plexmediaserver\n<\/code><\/pre>\n\n\n\n