以前安装时是这样的，正常安装(20.1 or 19):
It was like this during the previous installation, normal installation(20.1 or 19):
现在安装20.1或20.2版本,我找不到我的外置SSD
Now install version 20.1 or 20.2
I cannot find my external SSD
Hi and welcome to the forum 
Please provide exact details on how you are searching for your SSD, and where you don’t see it.
Without accurate relevant info, no one will be able to assist you.
Also please see:
(Google translation)
嗨，欢迎来到论坛
请提供有关如何搜索SSD以及未在何处看到的确切详细信息。
没有准确的相关信息，没有人可以为您提供帮助。
另请参阅：
我的论坛等级好像无法发送图片
sorry,It seems that my forum level cannot send pictures
在硬盘分区时，无法查看到我的外置ssd（mSATA），只能看到我的内置西数SSD（m2）
When partitioning the hard disk, I cannot see my external ssd (mSATA), only my internal Western Digital SSD (m2)
Please provide output of sudo fdisk -x after you have connected your external ssd.
Please use ``` on own line, before and after, the output.
连接外部ssd后，请提供 sudo fdisk -x 的输出。
请在输出之前和之后在一行上使用```。
[manjaro-gnome manjaro]# sudo fdisk -x
Disk /dev/nvme0n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WDS100T2B0C-00PXH0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: FCF18282-2085-46C9-B3F0-BCCF4E4926F6
First LBA: 34
Last LBA: 1953525134
Alternative LBA: 1953525167
Partition entries LBA: 2
Allocated partition entries: 128
Device Start End Sectors Type-UUID UUID Name Attrs
/dev/nvme0n1p1 2048 1085439 1083392 DE94BBA4-06D1-4D40-A16A-BFD50179D6AC EC7A35F9-D49D-4441-BAE0-EC8A8AF64BFD Basic data partition
RequiredPartition GUID:63
/dev/nvme0n1p2 1085440 1290239 204800 C12A7328-F81F-11D2-BA4B-00A0C93EC93B 80876C15-84D1-482B-8752-9CE27E60C33F EFI system partition
GUID:63
/dev/nvme0n1p3 1290240 1323007 32768 E3C9E316-0B5C-4DB8-817D-F92DF00215AE C8B365AF-FB67-4443-B9C1-A9ABA46CA88F Microsoft reserved partition
GUID:63
/dev/nvme0n1p4 1323008 420866047 419543040 EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 8A87B4E2-9FCC-4DFD-AEF7-21A3D0937999 Basic data partition
/dev/nvme0n1p5 420866048 1953521663 1532655616 EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 CCF4C0C1-2F40-4834-B1DA-2EB04903C5F5 Basic data partition
Disk /dev/sda: 3.64 TiB, 4000787030016 bytes, 7814037168 sectors
Disk model: WDC WD40PURX-64N
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 8CC585EE-9BF7-46D8-A7CC-D4CBA5BEA380
First LBA: 34
Last LBA: 7814037134
Alternative LBA: 7814037167
Partition entries LBA: 2
Allocated partition entries: 128
Device Start End Sectors Type-UUID UUID Name Attrs
/dev/sda1 34 32767 32734 E3C9E316-0B5C-4DB8-817D-F92DF00215AE 3FAFEDC6-E5D5-4891-987A-32CAF8CB474D Microsoft reserved partition
/dev/sda2 32768 7814033407 7814000640 EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 2E85F81A-FF43-4E8C-8CFA-590FD5DE3AC5 Basic data partition
Partition 1 does not start on physical sector boundary.
Disk /dev/loop0: 72.27 MiB, 75784192 bytes, 148016 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
Disk /dev/loop1: 288.29 MiB, 302297088 bytes, 590424 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
Disk /dev/loop2: 1.56 GiB, 1678585856 bytes, 3278488 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
Disk /dev/loop3: 656.31 MiB, 688193536 bytes, 1344128 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
Disk /dev/sdb: 14.91 GiB, 16013942784 bytes, 31277232 sectors
Disk model: Extreme
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Id Type Start-C/H/S End-C/H/S Attrs
/dev/sdb1 * 64 5499139 5499076 0 Empty 0/2/1 1022/152/4 80
/dev/sdb2 5499140 5507331 8192 ef EFI (FA 1022/152/5 1023/167/32
Disk /dev/sdc: 238.47 GiB, 256060514304 bytes, 500118192 sectors
Disk model: SSD PM851 mSATA
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xf033322d
Device Boot Start End Sectors Id Type Start-C/H/S End-C/H/S Attrs
/dev/sdc1 * 2048 52432895 52430848 7 HPFS 0/32/33 1023/254/63 80
/dev/sdc2 52432896 500117503 447684608 f W95 1023/254/63 1023/254/63
/dev/sdc5 52434944 276832255 224397312 7 HPFS 0/32/33 1023/254/63
/dev/sdc6 276834304 500117503 223283200 7 HPFS 0/32/33 1023/254/63
Your external ssd (mSATA) is correctly recognized by Linux, so there is no hardware issue, see your output:
- 您的外部ssd（mSATA）已被Linux正确识别，因此没有硬件问题，请参见输出：
So i don’t understand where the problem is, can you be more detailed in what you are trying to do and is not working?
- 所以我不明白问题出在哪里，能否详细说明您正在尝试做什么而无法正常工作？
我在尝试把manjaro装入我的/dev/sdc （SSD PM851 mSATA）
但是存储器选择没有显示他
- external ssd (mSATA) is correctly recognized by Linux
- I’m trying to install manjaro into my /dev/sdc (SSD pm851 msata)
- But the memory selection doesn’t show it :
Desktop -> Menu -> Install Manjaro Linux -> Partitions -> select storage device (not find /dev/sdc )
Only dev/sda and dev/mvne0n1 are available
System Information ( inxi )
[manjaro-gnome manjaro]# inxi -Fazy
System:
Kernel: 5.9.11-3-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-x86_64 lang=en_US keytable=us tz=UTC
misobasedir=manjaro misolabel=MANJARO_GNOME_202 quiet systemd.show_status=1
driver=nonfree nouveau.modeset=0 i915.modeset=1 radeon.modeset=1
Desktop: GNOME 3.38.1 tk: GTK 3.24.23 wm: gnome-shell dm: GDM 3.38.2
Distro: Manjaro Linux
Machine:
Type: Desktop Mobo: Micro-Star model: B450M MORTAR MAX (MS-7B89) v: 1.0
serial: <filter> UEFI [Legacy]: American Megatrends v: 2.70 date: 04/21/2020
CPU:
Info: 8-Core model: AMD Ryzen 7 3700X socket: AM4 bits: 64 type: MT MCP
arch: Zen 2 family: 17 (23) model-id: 71 (113) stepping: N/A
microcode: 8701021 L1 cache: 512 KiB L2 cache: 4096 KiB L3 cache: 31.2 MiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
bogomips: 134461
Speed: 4200 MHz min/max: N/A base/boost: 4200/4400 volts: 0.0 V
ext-clock: 100 MHz Core speeds (MHz): 1: 4200 2: 4199 3: 4198 4: 4200
5: 4199 6: 4198 7: 4199 8: 4200 9: 4198 10: 4199 11: 4194 12: 4199 13: 4199
14: 4192 15: 4199 16: 4193
Vulnerabilities: Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, STIBP:
conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: NVIDIA TU104 [GeForce RTX 2070 SUPER] driver: nvidia v: 455.45.01
alternate: nouveau,nvidia_drm bus ID: 26:00.0 chip ID: 10de:1e84
Display: x11 server: X.org 1.20.10 compositor: gnome-shell driver: nvidia
resolution: <xdpyinfo missing>
OpenGL: renderer: GeForce RTX 2070 SUPER/PCIe/SSE2 v: 4.6.0 NVIDIA 455.45.01
direct render: Yes
Audio:
Device-1: NVIDIA TU104 HD Audio driver: snd_hda_intel v: kernel
bus ID: 26:00.1 chip ID: 10de:10f8
Device-2: AMD Starship/Matisse HD Audio vendor: Micro-Star MSI
driver: snd_hda_intel v: kernel bus ID: 28:00.4 chip ID: 1022:1487
Sound Server: ALSA v: k5.9.11-3-MANJARO
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Micro-Star MSI driver: r8169 v: kernel port: f000 bus ID: 22:00.0
chip ID: 10ec:8168
IF: enp34s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:
Local Storage: total: 4.80 TiB used: 3.79 GiB (0.1%)
ID-1: /dev/nvme0n1 vendor: Western Digital model: WDS100T2B0C-00PXH0
size: 931.51 GiB block size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 serial: <filter> rev: 211070WD temp: 32 Celsius C scheme: GPT
SMART: yes health: PASSED on: 75d 7h cycles: 551
read-units: 22,562,747 [11.5 TB] written-units: 15,392,544 [7.88 TB]
ID-2: /dev/sda vendor: Western Digital model: WD40PURX-64N96Y0
family: Purple size: 3.64 TiB block size: physical: 4096 B logical: 512 B
sata: 3.1 speed: 6.0 Gb/s rotation: 5400 rpm serial: <filter> rev: 0A80
temp: 28 C scheme: GPT
SMART: yes state: enabled health: PASSED on: 60d 5h cycles: 458
ID-3: /dev/sdb type: USB vendor: SanDisk model: Extreme
drive model: SSD U100 16GB family: based SSDs size: 14.91 GiB block size:
physical: 512 B logical: 512 B sata: 3.0 speed: 6.0 Gb/s serial: <filter>
drive serial: <filter> rev: 0001 drive rev: KM.10.00 scheme: MBR
SMART: yes state: enabled health: PASSED on: 14 hrs cycles: 1370
read: 197.74 GiB written: 233.35 GiB
ID-4: /dev/sdc type: USB vendor: Samsung model: SSD PM851 mSATA
size: 238.47 GiB block size: physical: 4096 B logical: 512 B
serial: <filter> rev: 0508 scheme: MBR
SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure?
Partition:
ID-1: / raw size: N/A size: 23.53 GiB used: 3.53 GiB (15.0%) fs: overlay
source: ERR-102
Swap:
Alert: No Swap data was found.
Sensors:
System Temperatures: cpu: 37.2 C mobo: N/A gpu: nvidia temp: 27 C
Fan Speeds (RPM): N/A gpu: nvidia fan: 33%
Info:
Processes: 379 Uptime: 55m Memory: 31.37 GiB used: 2.32 GiB (7.4%)
Init: systemd v: 246 Compilers: gcc: 10.2.0 Packages: pacman: 1274 lib: 319
flatpak: 0 Shell: Bash (su) v: 5.0.18 running in: zsh inxi: 3.1.08
Ok, now i think i understand 
Make sure you have the correct device name when performing these steps…
When you follow the steps below, be aware that it will erase ALL data on that disk !
- Execute sudo gdisk /dev/sdc
- Type o to create a fresh GPT partition table.
- Type w to write the fresh GPT partition table to disk.
- Disconnect the disk, wait a few seconds, then connect the disk again.
- You should now be able to create new partitions on that disk.
好吧，现在我想我明白了
执行这些步骤时，请确保您具有正确的设备名称。
当您按照以下步骤操作时，请注意它会擦除该磁盘上的所有数据！
- 执行 sudo gdisk / dev / sdc
- 键入 o 创建一个新的GPT分区表。
- 键入 w 将新的GPT分区表写入磁盘。
- 断开磁盘连接，等待几秒钟，然后再次连接磁盘。
- 现在，您应该能够在该磁盘上创建新分区了。
it not work QAQ
[manjaro-gnome manjaro]# sudo gdisk /dev/sdc
GPT fdisk (gdisk) version 1.0.5
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: not present
***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by
typing 'q' if you don't want to convert your MBR partitions
to GPT format!
***************************************************************
Command (? for help): o
This option deletes all partitions and creates a new protective MBR.
Proceed? (Y/N): y
Command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot or after you
run partprobe(8) or kpartx(8)
The operation has completed successfully.
It worked, because you now have a disk with no partitions, it is fresh for you to create new partitions in
Did you perform step 4?
它起作用了，因为您现在有了一个没有分区的磁盘，因此可以在：wink中创建新的分区，这是全新的
您是否执行了步骤4？
I have done step 4, but it still cannot show my /dev/sdc.
Then I low-level format the SSD, it works!
Thanks for everything. 
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