In message , Richard Kettlewell
 writes
>Adrian  writes:
>> I'm having some fun and games with a new SSD connected to a Pi via
>> USB. This has happened two days running, I've tried re-partitioning
>> and re-formating the disk, but to no avail.
>>
>> I've got the disc partitioned and formatted (ext4), and then I mount
>> it. So far so good.  After about 4 hours of copying data to it from an
>> existing HDD (which it is intended to replace), I get a series of
>> messages informing me that the disc is read only.
>>
>> e2fsck informs me :
>>
>> e2fsck: No such file or directory while trying to open /dev/sdb1
>> possible non-existent device?
>>
>> I've also seen it suggest :
>>
>> Attempt to read block from filesystem resulted in short read whilst
>> trying to open /dev/sdb1
>> could this be a zero-length partition?
>>
>> If I connect the disc to my Ubuntu box, all seems well, it mounts and
>> I can read/write to it.
>>
>> On top of this, when I try to remount it, mount -a doesn't give any
>> errors, but the mount disappears almost immediately, as does the mount
>> point (/media/extdisc2)
>>
>> From /var/log/messages :
>>
>> Jul 17 14:33:35 ffoilpi1 kernel: [79524.954860] usb 1-1.2: reset
>> high-speed USB device number 7 using dwc_otg
>> Jul 17 14:33:36 ffoilpi1 kernel: [79525.937346] sd 1:0:0:0: [sdb]
>> UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
>> Jul 17 14:33:36 ffoilpi1 kernel: [79525.937389] sd 1:0:0:0: [sdb]
>> Sense Key : 0x2 [current]
>> Jul 17 14:33:36 ffoilpi1 kernel: [79525.937469] sd 1:0:0:0: [sdb]
>> ASC=0x3a ASCQ=0x0
>> Jul 17 14:33:36 ffoilpi1 kernel: [79525.937500] sd 1:0:0:0: [sdb] CDB:
>> opcode=0x2a 2a 00 4f 84 7b 70 00 00 10 00
>
>There is a fault with either the disk, or its connectivity, or its
>power. (Is it powered over the USB connection to the host or is it
>separately powered?)
>

Powered from the PI over USB.  The Pi is a 2B using a Pi 2.5A power
supply.  The HDD has its own power supply, and apart from a keyboard and
mouse, the only other item connected to the PI is a DHT22 (thermometer)

>https://www.suse.com/support/kb/doc/?id=7006510 is a starting point for
>interpreting these messages.
>

Thanks.  On the off chance that I'm reading that correctly, the initial
error is "Medium not present", with no hints as to the later failure to
mount etc.

Adrian
--
To Reply :
replace "bulleid" with "adrian" - all mail to bulleid is rejected
Sorry for the rigmarole, If I want spam, I'll go to the shops
Every time someone says "I don't believe in trolls", another one dies.

--- SoupGate-Win32 v1.05