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WD 4TB - это USB, подключенный к RPi2B. Ценю твою помощь.

# uname -r
4.14.69-v7+

HDparm отображает 4000 ГБ, но ядро, вероятно, не для gdisk, а fdisk тоже.

/var/log/syslog:
Sep 13 20:00:09 petaf kernel: [19193.944765] usb 1-1.5: new high-speed USB device number 13 using dwc_otg
Sep 13 20:00:09 petaf kernel: [19194.076119] usb 1-1.5: New USB device found, idVendor=1058, idProduct=1021
Sep 13 20:00:09 petaf kernel: [19194.076140] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep 13 20:00:09 petaf kernel: [19194.076151] usb 1-1.5: Product: Ext HDD 1021
Sep 13 20:00:09 petaf kernel: [19194.076164] usb 1-1.5: Manufacturer: Western Digital
Sep 13 20:00:09 petaf kernel: [19194.076175] usb 1-1.5: SerialNumber: 574343374B3553584B444650
Sep 13 20:00:09 petaf kernel: [19194.077242] usb-storage 1-1.5:1.0: USB Mass Storage device detected
Sep 13 20:00:09 petaf kernel: [19194.085826] scsi host1: usb-storage 1-1.5:1.0
Sep 13 20:00:09 petaf mtp-probe: checking bus 1, device 13: "/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.5"
Sep 13 20:00:09 petaf mtp-probe: bus: 1, device: 13 was not an MTP device
Sep 13 20:00:10 petaf kernel: [19195.156098] scsi 1:0:0:0: Direct-Access     WD       Ext HDD 1021     2002 PQ: 0 ANSI: 4
Sep 13 20:00:10 petaf kernel: [19195.157493] sd 1:0:0:0: Attached scsi generic sg1 type 0
Sep 13 20:00:10 petaf kernel: [19195.158559] sd 1:0:0:0: [sdb] 4294961152 512-byte logical blocks: **(2.20 TB/2.00 TiB)**
Sep 13 20:00:10 petaf kernel: [19195.159885] sd 1:0:0:0: [sdb] Test WP failed, assume Write Enabled
Sep 13 20:00:10 petaf kernel: [19195.160909] sd 1:0:0:0: [sdb] Asking for cache data failed
Sep 13 20:00:10 petaf kernel: [19195.160926] sd 1:0:0:0: [sdb] Assuming drive cache: write through
Sep 13 20:00:10 petaf kernel: [19195.189942] sd 1:0:0:0: [sdb] Attached SCSI disk
Sep 13 20:00:10 petaf systemd-udevd[2880]: Process '/lib/udev/hdparm' failed with exit code 5.


# hdparm -I /dev/sdc

/dev/sdc: 

ATA device, with non-removable media
        Model Number:       WDC WD40EZRZ-00GXCB0
        Serial Number:      WD-WCC7K5SXKDFP
        Firmware Revision:  80.00A80
        Transport:          Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
        Used: unknown (minor revision code 0x006d)
 ...
 ...
        LBA    user addressable sectors:   268435455
        LBA48  user addressable sectors:  7814037168
        Logical  Sector size:                   512 bytes
        Physical Sector size:                  4096 bytes
        Logical Sector-0 offset:                  0 bytes
        device size with M = 1024*1024:     **3815447** MBytes
        device size with M = 1000*1000:     **4000787** MBytes (**4000** GB)

# fdisk -l /dev/sdc
Disk /dev/sdc: 2 TiB, 2199020109824 bytes, 4294961152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
cache/buffer size  = unknown

Я испытываю это как на моем RPi2B, так и на моих хостах Mint. Оба запускают ядро 4.+ и поддерживают 'GPT' и 'Advanced Partition'.

# egrep '^[^#].*(EFI_PAR|TION_ADVANCED)' config
CONFIG_PARTITION_ADVANCED=y
CONFIG_EFI_PARTITION=y
|источник

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