Hello,

trying to run debian on my pogoplug-pro, following this thread i managed to install uBoot. But booting from the usb drive lead to a kernel panic

VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
usb 1-1: new high-speed USB device number 2 using oxnas-ehci
1f00           14336 mtdblock0
 (driver?)
1f01          116736 mtdblock1
  (driver?)
 Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Did i missed a step flashing uBoot or is something wrong with my usb device ?
Any hint pointing me in the right direction is much appriciated.

Full log:

U-Boot SPL 2013.10-tld-4 (Sep 07 2014 - 14:10:12)
  Boot device: NAND
Attempting to set PLLA to 850 MHz ...
  plla_ctrl0 : 0000020a
  plla_ctrl1 : 00330000
  plla_ctrl2 : 0065008b
  plla_ctrl3 : 000000f1

PLLA Set


U-Boot 2015.10-tld-2 (Oct 21 2017 - 22:00:02 -0700)
OXNAS OX820

DRAM:  128 MiB
NAND:  128 MiB
In:    serial
Out:   serial
Err:   serial
Net:   dwmac.40400000
Hit any key to stop autoboot:  0
starting USB...
USB0:   USB EHCI 1.00
scanning bus 0 for devices... 3 USB Device(s) found
       scanning usb for storage devices... 1 Storage Device(s) found

Reset IDE: SATA PHY not ready for device 0
ide_preinit failed

Partition Map for USB device 0  --   Partition Type: DOS

Part    Start Sector    Num Sectors     UUID            Type
  1     2048            31127552        9cd07d3a-01     83
loading envs from usb 0 ...
0 bytes read in 226 ms (0 Bytes/s)

no IDE devices available
importing envs ...
running scan_disk ...
Scan device usb
device usb 0:1
1 bytes read in 199 ms (0 Bytes/s)
Found bootable drive on usb 0
loading uImage ...
4609480 bytes read in 419 ms (10.5 MiB/s)
loading uInitrd ...
6464907 bytes read in 430 ms (14.3 MiB/s)
loading DTB /boot/dts/ox820-pogoplug-pro.dtb ...
9032 bytes read in 205 ms (43 KiB/s)
## Booting kernel from Legacy Image at 60500000 ...
   Image Name:   Linux-4.14.180-oxnas-tld-1
   Created:      2022-10-07  22:29:45 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4609416 Bytes = 4.4 MiB
   Load Address: 60008000
   Entry Point:  60008000
   Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 60e00000 ...
   Image Name:   initramfs-4.14.180-oxnas-tld-1
   Created:      2022-10-07  23:22:26 UTC
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    6464843 Bytes = 6.2 MiB
   Load Address: 60000000
   Entry Point:  60000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 62c00000
   Booting using the fdt blob at 0x62c00000
   Loading Kernel Image ... OK
   Loading Ramdisk to 677fc000, end 67e2654b ... OK
   Loading Device Tree to 677f6000, end 677fb347 ... OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.14.180-oxnas-tld-1 (root@tldDebian) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP PREEMPT Wed May 13 02:38:34                                                      PDT 2020
[    0.000000] CPU: ARMv6-compatible processor [410fb025] revision 5 (ARMv7), cr=00c5787d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Pogoplug V3 Pro
[    0.000000] bootconsole [earlycon0] enabled
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] random: get_random_bytes called from start_kernel+0x84/0x3f8 with crng_init=0
[    0.000000] percpu: Embedded 15 pages/cpu s29548 r8192 d23700 u61440
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line: earlyprintk console=ttyS0,115200
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Memory: 119028K/131072K available (7168K kernel code, 199K rwdata, 1524K rodata, 1024K init, 245K bss, 12044K reserved, 0K                                                      cma-reserved)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xc8800000 - 0xff800000   ( 880 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
[    0.000000]       .text : 0xc0008000 - 0xc0800000   (8160 kB)
[    0.000000]       .init : 0xc0a00000 - 0xc0b00000   (1024 kB)
[    0.000000]       .data : 0xc0b00000 - 0xc0b31f68   ( 200 kB)
[    0.000000]        .bss : 0xc0b383b8 - 0xc0b757c0   ( 246 kB)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]  Tasks RCU enabled.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] FPGA IRQ chip 0 "interrupt-controller" @ c8804000, 32 irqs, parent IRQ: 16
[    0.000017] sched_clock: 24 bits at 390kHz, resolution 2560ns, wraps every 21474835200ns
[    0.008166] clocksource: oxnas_rps_clocksource_timer: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 19112603332 ns
[    0.018895] timer_oxnas_rps: Registered clocksource rate 390625Hz
[    0.025052] timer_oxnas_rps: Registered clock event rate 6250000Hz prescaler 0 period 62500
[    0.033582] GIC: PPI13 is secure or misconfigured
[    0.038384] GIC: PPI13 is secure or misconfigured
[    0.043299] Console: colour dummy device 80x30
[    0.047836] Calibrating delay loop... 339.14 BogoMIPS (lpj=1695744)
[    0.094784] pid_max: default: 32768 minimum: 301
[    0.099735] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.106414] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.114542] CPU: Testing write buffer coherency: ok
[    0.158535] Setting up static identity map for 0x60100000 - 0x60100038
[    0.165347] Hierarchical SRCU implementation.
[    0.208437] smp: Bringing up secondary CPUs ...
[    0.258552] GIC: PPI13 is secure or misconfigured
[    0.318720] smp: Brought up 1 node, 2 CPUs
[    0.327646] SMP: Total of 2 processors activated (678.29 BogoMIPS).
[    0.334819] devtmpfs: initialized
[    0.343349] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.353292] futex hash table entries: 512 (order: 2, 16384 bytes)
[    0.359795] prandom: seed boundary self test passed
[    0.368960] prandom: 100 self tests passed
[    0.373122] pinctrl core: initialized pinctrl subsystem
[    0.379118] NET: Registered protocol family 16
[    0.385192] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.394452] cpuidle: using governor ladder
[    0.398750] cpuidle: using governor menu
[    0.421107] vgaarb: loaded
[    0.424358] SCSI subsystem initialized
[    0.428976] usbcore: registered new interface driver usbfs
[    0.434600] usbcore: registered new interface driver hub
[    0.440215] usbcore: registered new device driver usb
[    0.445519] pps_core: LinuxPPS API ver. 1 registered
[    0.450606] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.459860] PTP clock support registered
[    0.464878] clocksource: Switched to clocksource oxnas_rps_clocksource_timer
[    0.489784] NET: Registered protocol family 2
[    0.495162] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.502202] TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
[    0.508689] TCP: Hash tables configured (established 1024 bind 1024)
[    0.515287] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.521210] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.527838] NET: Registered protocol family 1
[    0.533038] RPC: Registered named UNIX socket transport module.
[    0.539074] RPC: Registered udp transport module.
[    0.543843] RPC: Registered tcp transport module.
[    0.548648] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.556689] Initialise system trusted keyrings
[    0.561249] Key type blacklist registered
[    0.565685] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[    0.579240] zbud: loaded
[    0.586570] NFS: Registering the id_resolver key type
[    0.591713] Key type id_resolver registered
[    0.596034] Key type id_legacy registered
[    0.600128] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.606947] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[    0.614233] fuse init (API version 7.26)
[    0.619223] orangefs_debugfs_init: called with debug mask: :none: :0:
[    0.626019] orangefs_init: module version upstream loaded
[    2.578708] Key type asymmetric registered
[    2.582886] Asymmetric key parser 'x509' registered
[    2.587975] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    2.595481] io scheduler noop registered
[    2.599472] io scheduler deadline registered
[    2.603860] io scheduler cfq registered (default)
[    2.610856] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    2.618800] console [ttyS0] disabled
[    2.622568] 44200000.serial: ttyS0 at MMIO 0x44200000 (irq = 55, base_baud = 390625) is a 16550A
[    2.631531] console [ttyS0] enabled
[    2.631531] console [ttyS0] enabled
[    2.638599] bootconsole [earlycon0] disabled
[    2.638599] bootconsole [earlycon0] disabled
[    2.657840] loop: module loaded
[    2.662737] scsi host0: sata_oxnas
[    2.666536] ata1: SATA max UDMA/133 irq 57
[    2.670727] sata_oxnas: resetting SATA core
[    2.735229] nand: Could not find valid ONFI parameter page; aborting
[    2.741570] nand: device found, Manufacturer ID: 0xad, Chip ID: 0xf1
[    2.747944] nand: Hynix NAND 128MiB 3,3V 8-bit
[    2.752371] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[    2.759959] Scanning device for bad blocks
[    2.846364] 2 ofpart partitions found on MTD device 41000000.nand-controller
[    2.853381] Creating 2 MTD partitions on "41000000.nand-controller":
[    2.859752] 0x000000000000-0x000000e00000 : "boot"
[    2.866260] 0x000000e00000-0x000008000000 : "data"
[    2.874158] libphy: Fixed MDIO Bus: probed
[    2.878730] oxnas-dwmac 40400000.ethernet: PTP uses main clock
[    2.884556] oxnas-dwmac 40400000.ethernet: no reset control found
[    2.954990] stmmac - user ID: 0x12, Synopsys ID: 0x35
[    2.960030] oxnas-dwmac 40400000.ethernet: Ring mode enabled
[    2.965721] oxnas-dwmac 40400000.ethernet: DMA HW capability register supported
[    2.972999] oxnas-dwmac 40400000.ethernet: Enhanced/Alternate descriptors
[    2.979783] oxnas-dwmac 40400000.ethernet: Enabled extended descriptors
[    2.986393] oxnas-dwmac 40400000.ethernet: RX Checksum Offload Engine supported
[    2.993671] oxnas-dwmac 40400000.ethernet: COE Type 2
[    2.998725] oxnas-dwmac 40400000.ethernet: TX Checksum insertion supported
[    3.005598] oxnas-dwmac 40400000.ethernet: Wake-Up On Lan supported
[    3.011850] oxnas-dwmac 40400000.ethernet (unnamed net_device) (uninitialized): device MAC address fa:35:92:5e:51:eb
[    3.016742] ata1: SATA link down (SStatus 0 SControl 310)
[    3.022356] oxnas-dwmac 40400000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[    3.044695] libphy: stmmac: probed
[    3.048145] mdio_bus stmmac-0:00: attached PHY driver [unbound] (mii_bus:phy_addr=stmmac-0:00, irq=POLL)
[    3.057633] mdio_bus stmmac-0:03: attached PHY driver [unbound] (mii_bus:phy_addr=stmmac-0:03, irq=POLL)
[    3.068057] PPP generic driver version 2.4.2
[    3.072588] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.079157] ehci-pci: EHCI PCI platform driver
[    3.284943] oxnas-ehci 40200100.ehci: EHCI Host Controller
[    3.290452] oxnas-ehci 40200100.ehci: new USB bus registered, assigned bus number 1
[    3.298319] oxnas-ehci 40200100.ehci: irq 52, io mem 0x40200100
[    3.324948] oxnas-ehci 40200100.ehci: USB 2.0 started, EHCI 1.00
[    3.331276] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    3.338096] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.345326] usb usb1: Product: EHCI Host Controller
[    3.350182] usb usb1: Manufacturer: Linux 4.14.180-oxnas-tld-1 ehci_hcd
[    3.356794] usb usb1: SerialNumber: 40200100.ehci
[    3.362355] hub 1-0:1.0: USB hub found
[    3.366215] hub 1-0:1.0: 2 ports detected
[    3.371205] usbcore: registered new interface driver cdc_wdm
[    3.377049] usbcore: registered new interface driver usb-storage
[    3.383162] usbcore: registered new interface driver usbserial
[    3.389076] usbcore: registered new interface driver usbserial_generic
[    3.395696] usbserial: USB Serial support registered for generic
[    3.402017] mousedev: PS/2 mouse device common for all mice
[    3.407736] i2c /dev entries driver
[    3.412421] hidraw: raw HID events driver (C) Jiri Kosina
[    3.418076] usbcore: registered new interface driver usbhid
[    3.423626] usbhid: USB HID core driver
[    3.428728] NET: Registered protocol family 10
[    3.434570] Segment Routing with IPv6
[    3.438400] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[    3.446072] NET: Registered protocol family 17
[    3.450631] Key type dns_resolver registered
[    3.456194] registered taskstats version 1
[    3.460280] Loading compiled-in X.509 certificates
[    3.465195] zswap: loaded using pool lzo/zbud
[    3.477539] Key type big_key registered
[    3.483811] Key type encrypted registered
[    3.734958] oxnas-pcie 47c00000.pcie-controller: PCIe version/deviceID 0x82510b5
[    3.742430] oxnas-pcie 47c00000.pcie-controller: link up
[    3.748226] oxnas-pcie 47c00000.pcie-controller: PCI host bridge to bus 0000:00
[    3.755571] pci_bus 0000:00: root bus resource [mem 0x48000000-0x49ffffff]
[    3.762419] pci_bus 0000:00: root bus resource [mem 0x4a000000-0x4bdfffff pref]
[    3.769730] pci_bus 0000:00: root bus resource [io  0x0000-0xfffff]
[    3.776007] pci_bus 0000:00: root bus resource [bus 00-7f]
[    3.782023] PCI: bus0: Fast back to back transfers disabled
[    3.787650] pci 0000:00:00.0: BAR 0: assigned [mem 0x48000000-0x4800ffff]
[    3.795112] hctosys: unable to open rtc device (rtc0)
[    3.800885] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[    3.808445] Please append a correct "root=" boot option; here are the available partitions:
[    3.816847] usb 1-1: new high-speed USB device number 2 using oxnas-ehci
[    3.823595] 1f00           14336 mtdblock0
[    3.823605]  (driver?)
[    3.830353] 1f01          116736 mtdblock1
[    3.830361]  (driver?)
[    3.836948] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    3.845181] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.14.180-oxnas-tld-1 #1
[    3.852280] Hardware name: Generic DT based system
[    3.857072] [<c01095b0>] (unwind_backtrace) from [<c01053bc>] (show_stack+0x10/0x14)
[    3.864796] [<c01053bc>] (show_stack) from [<c07384cc>] (dump_stack+0xb4/0xd0)
[    3.871997] [<c07384cc>] (dump_stack) from [<c0111b88>] (panic+0xec/0x268)
[    3.878853] [<c0111b88>] (panic) from [<c0a012bc>] (mount_block_root+0x1e0/0x2a8)
[    3.886307] [<c0a012bc>] (mount_block_root) from [<c0a0146c>] (mount_root+0xe8/0x128)
[    3.894110] [<c0a0146c>] (mount_root) from [<c0a015dc>] (prepare_namespace+0x130/0x194)
[    3.902085] [<c0a015dc>] (prepare_namespace) from [<c0a00e5c>] (kernel_init_freeable+0x17c/0x1c4)
[    3.910922] [<c0a00e5c>] (kernel_init_freeable) from [<c074b198>] (kernel_init+0x8/0x110)
[    3.919065] [<c074b198>] (kernel_init) from [<c01029b8>] (ret_from_fork+0x14/0x3c)
[    3.926617] CPU1: stopping
[    3.929323] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.180-oxnas-tld-1 #1
[    3.936422] Hardware name: Generic DT based system
[    3.941207] [<c01095b0>] (unwind_backtrace) from [<c01053bc>] (show_stack+0x10/0x14)
[    3.948925] [<c01053bc>] (show_stack) from [<c07384cc>] (dump_stack+0xb4/0xd0)
[    3.956121] [<c07384cc>] (dump_stack) from [<c01082a8>] (handle_IPI+0x190/0x1dc)
[    3.963494] [<c01082a8>] (handle_IPI) from [<c01014c8>] (gic_handle_irq+0x7c/0x8c)
[    3.971033] [<c01014c8>] (gic_handle_irq) from [<c0106278>] (__irq_svc+0x58/0x8c)
[    3.978478] Exception stack(0xc7865f70 to 0xc7865fb8)
[    3.983505] 5f60:                                     00000001 00000000 00000000 00000000
[    3.991649] 5f80: 00000000 ffffe000 c0b03ae4 c0b03a88 00000000 00000000 c0a39e68 c08f607c
[    3.999790] 5fa0: 00000000 c7865fc0 c0103278 c010327c 60000013 ffffffff
[    4.006376] [<c0106278>] (__irq_svc) from [<c010327c>] (arch_cpu_idle+0x28/0x30)
[    4.013752] [<c010327c>] (arch_cpu_idle) from [<c0149f5c>] (do_idle+0x180/0x1d4)
[    4.021122] [<c0149f5c>] (do_idle) from [<c014a270>] (cpu_startup_entry+0x18/0x1c)
[    4.028664] [<c014a270>] (cpu_startup_entry) from [<60101868>] (0x60101868)
[    4.035604] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Most likely, you did not name your root file system "rootfs".

Mount it to another linux box, suppose that partition is /dev/sdb1, then do

sudo tune2fs -L rootfs /dev/sdb1

sync; umount, remove usb, replug to pogopro, then try to boot pogopro again.

the label is correct:

ubuntu@ubuntu:~$ sudo lsblk -fp /dev/sdc
NAME        FSTYPE LABEL  UUID                                 MOUNTPOINT
/dev/sdc
└─/dev/sdc1 ext3   rootfs 8cd6739c-e694-425e-9096-146cb2130e15 /media/ubuntu/rootfs

Is it traditional MBR partition or GPT? GPT is not supported in this u-boot yet.

dsg,

Looks like either of these 2 problems.

1. You had a mis-step while creating the rootfs. Step 4 should not be done while booting with the new u-boot (U-Boot 2015.10-tld-2).

Quote

4. Create uImage with embedded DTB for booting with stock u-boot. Skip this step if you have installed the latest released uboot for OXNAS, or are installing this u-boot at the same time.

- If you have the Pogo V3 Classic (without Wifi), then the DTB name below should be ox820-pogoplug-classic.dtb (see below for the list of OX820 DTBs).

cd /media/sdb1/boot
cp -a uImage uImage.orig
cp -a zImage-4.14.180-oxnas-tld-1 zImage.fdt
cat dts/ox820-pogoplug-pro.dtb >> zImage.fdt
mkimage -A arm -O linux -C none -T kernel -a 0x60008000 -e 0x60008000 -n 'Linux-4.14.180-oxnas-tld-1' -d zImage.fdt uImage
sync

In this case, you need to restore the original uImage. Mount the rootfs on another Linux box. And assuming it is mounted at /media/sdb1

cd /media/sdb1/boot
cp -a uImage.orig uImage
sync

OR

2. Your u-boot envs were not set correctly. To fix the envs, boot again with serial console. Interrupt u-boot at count down

Hit any key to stop autoboot:  0

and get the listing of envs so I can see what's wrong.

printenv

-bodhi
===========================
Forum Wiki
bodhi's corner (buy bodhi a beer)

looks like the embeded dtb problem.

From Bodhi's rfs tar.bz2
...
-rw-r--r-- 1 root root 4600448 May 14 2020 uImage
...

From dsg's bootlog

loading uImage ...
4609480 bytes read in 419 ms (10.5 MiB/s)

@bodhi
Yes indeed, i did step 4 and that was the issue.
Now wiped the USB drive, and repeat every step, skipping step 4 and it is running!
Thank you very much!



@daviddyer
In my case it is the opposite - GPT is working but DOS/MBR is not

Partition Map for USB device 0  --   Partition Type: DOS

Part    Start Sector    Num Sectors     UUID            Type
  1     2048            31127552        9cd07d3a-01     83
loading envs from usb 0 ...
** File not found /boot/uEnv.txt **

no IDE devices available
running scan_disk ...
Scan device usb
device usb 0:1
** File not found /boot/uImage **
device usb 1:1
** Bad device usb 1 **
device usb 2:1
** Bad device usb 2 **
device usb 3:1
** Bad device usb 3 **

GPT:

Partition Map for USB device 0  --   Partition Type: EFI

Part    Start LBA       End LBA         Name
        Attributes
        Type GUID
        Partition GUID
  1     0x00000800      0x01daffde      ""
        attrs:  0x0000000000000000
        type:   0fc63daf-8483-4772-8e79-3d69d8477de4
        guid:   7047cfeb-6889-d94c-ab56-b0d2c89949cc
loading envs from usb 0 ...
** File not found /boot/uEnv.txt **

no IDE devices available
running scan_disk ...
Scan device usb
device usb 0:1
1 bytes read in 199 ms (0 Bytes/s)
Found bootable drive on usb 0
loading uImage ...
4600448 bytes read in 413 ms (10.6 MiB/s)
loading uInitrd ...
6464907 bytes read in 441 ms (14 MiB/s)
loading DTB /boot/dts/ox820-pogoplug-pro.dtb ...
9032 bytes read in 204 ms (43 KiB/s)
## Booting kernel from Legacy Image at 60500000 ...
   Image Name:   Linux-4.14.180-oxnas-tld-1
   Created:      2020-05-15   3:58:34 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4600384 Bytes = 4.4 MiB
   Load Address: 60008000
   Entry Point:  60008000
   Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 60e00000 ...
   Image Name:   initramfs-4.14.180-oxnas-tld-1
   Created:      2020-05-15   3:58:49 UTC
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    6464843 Bytes = 6.2 MiB
   Load Address: 60000000
   Entry Point:  60000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 62c00000
   Booting using the fdt blob at 0x62c00000
   Loading Kernel Image ... OK
   Loading Ramdisk to 677fc000, end 67e2654b ... OK
   Loading Device Tree to 677f6000, end 677fb347 ... OK

Starting kernel ...

dsg,

> In my case it is the opposite - GPT is working but
> DOS/MBR is not

Usually, MBR is more common and should be a given that it is supported (there are many old u-boot don't support GPT). But my released u-boot supports both.

Sometime you just need to wiple and recreate the partition using fdisk, and it will be OK with MBR partition table.

-bodhi
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Did some tries and yes, both working.
Seems that ext4 did not work for me, but ext3 does. I did some tries and could reproduce it.

Thanks for the help and all the work you did !