Solved format issue SDHC card

March 13, 2020 at 06:24:13
Specs: Win 10, 8GB
I have this SDHC card which is being used by an external device, and I had troubles reading it on Windows. ( It couldn't be used on the external device either )
So I tried to format, but all methods failed:
- format.com
- format using Windows explorer
- format disk (1 partition only) using DISKMGMT.msc
- cleaning partition using Diskpart

They all start their action, but either hang or state "an error occured" and the formatting cannot take place. None of these tools provide much more detailed info on why ...

This is the current content of the drive: (see below)

I suspect it is physically broken, but I'd like to have confirmation of that. What is the best way for that ?


Volume in drive N is és¦Z'äs\¦¦

Directory of n:\

01/01/1601 01:00 3.041.335.713 ¦*
`°+²a.~wƒ
27/06/2076 21:28 <DIR> ï+ÿ¬ua
11/06/2090 16:34 2.352.956.673 $-Sú(å8¥.-vb
01/01/1601 01:00 <DIR> -°½²@+O-.ïd+
01/01/1601 01:00 <DIR> Ħ+SëtÖ.ò5
10/09/1994 16:54 2.098.592.103 q'¢Ñtä+£.»+
24/05/2100 02:39 3.332.660.442 0¦ktɦS+.-)n
01/01/1601 01:00 153.532.124 F¦1ldè0ÿ.d+p
14/10/1982 20:50 1.530.760.952 nó>o++.r+Ü
01/01/1601 01:00 <DIR> É¡S-B.Nc.ïû
01/01/1601 01:00 <DIR> ·l+r{Ü.\ö¦
14/01/2041 01:41 824.252.118 üa_Å禦d.ªtà
30/01/2022 12:40 667.606.963 +äì\ÜF-.0¬k
23/11/2084 18:48 <DIR> `˜ù·Q}P.~ƒ
01/01/1601 01:00 3.041.335.713 ¦*
`°+²a.~wƒ
27/06/2076 21:28 <DIR> ï+ÿ¬ua
11/06/2090 16:34 2.352.956.673 $-Sú(å8¥.-vb
01/01/1601 01:00 <DIR> -°½²@+O-.ïd+
01/01/1601 01:00 <DIR> Ħ+SëtÖ.ò5
10/09/1994 16:54 2.098.592.103 q'¢Ñtä+£.»+
24/05/2100 02:39 3.332.660.442 0¦ktɦS+.-)n
01/01/1601 01:00 153.532.124 F¦1ldè0ÿ.d+p
14/10/1982 20:50 1.530.760.952 nó>o++.r+Ü
01/01/1601 01:00 <DIR> É¡S-B.Nc.ïû
01/01/1601 01:00 <DIR> ·l+r{Ü.\ö¦
14/01/2041 01:41 824.252.118 üa_Å禦d.ªtà
30/01/2022 12:40 667.606.963 +äì\ÜF-.0¬k
23/11/2084 18:48 <DIR> `˜ù·Q}P.~ƒ
01/01/1601 01:00 3.041.335.713 ¦*
`°+²a.~wƒ
27/06/2076 21:28 <DIR> ï+ÿ¬ua
11/06/2090 16:34 2.352.956.673 $-Sú(å8¥.-vb
01/01/1601 01:00 <DIR> -°½²@+O-.ïd+
01/01/1601 01:00 <DIR> Ħ+SëtÖ.ò5
10/09/1994 16:54 2.098.592.103 q'¢Ñtä+£.»+
24/05/2100 02:39 3.332.660.442 0¦ktɦS+.-)n
01/01/1601 01:00 153.532.124 F¦1ldè0ÿ.d+p
14/10/1982 20:50 1.530.760.952 nó>o++.r+Ü
01/01/1601 01:00 <DIR> É¡S-B.Nc.ïû
01/01/1601 01:00 <DIR> ·l+r{Ü.\ö¦
14/01/2041 01:41 824.252.118 üa_Å禦d.ªtà
30/01/2022 12:40 667.606.963 +äì\ÜF-.0¬k
23/11/2084 18:48 <DIR> `˜ù·Q}P.~ƒ
01/01/1601 01:00 3.041.335.713 ¦*
`°+²a.~wƒ
27/06/2076 21:28 <DIR> ï+ÿ¬ua
11/06/2090 16:34 2.352.956.673 $-Sú(å8¥.-vb
01/01/1601 01:00 <DIR> -°½²@+O-.ïd+
01/01/1601 01:00 <DIR> Ħ+SëtÖ.ò5
10/09/1994 16:54 2.098.592.103 q'¢Ñtä+£.»+
24/05/2100 02:39 3.332.660.442 0¦ktɦS+.-)n
01/01/1601 01:00 153.532.124 F¦1ldè0ÿ.d+p
14/10/1982 20:50 1.530.760.952 nó>o++.r+Ü
01/01/1601 01:00 <DIR> É¡S-B.Nc.ïû
01/01/1601 01:00 <DIR> ·l+r{Ü.\ö¦
14/01/2041 01:41 824.252.118 üa_Å禦d.ªtà
30/01/2022 12:40 667.606.963 +äì\ÜF-.0¬k
23/11/2084 18:48 <DIR> `˜ù·Q}P.~ƒ
32 File(s) 123.934.289.952 bytes


See More: format issue SDHC card

Reply ↓  Report •

✔ Best Answer
March 13, 2020 at 14:36:10
They can simply degrade and “die” if left unconnected for a while. Seems they need volts applied after a while to re-energise them and (hopefully) preserve contents.

Apparently the same applies to SSD as well, if left unused for lengthy while. They can slowly degrade and contents lost. The drive can be reformatted ok afterwards as best I understand ir.



#1
March 13, 2020 at 11:32:16
"They all start their action, but either hang or state "an error occured" and the formatting cannot take place. None of these tools provide much more detailed info on why ...

This is the current content of the drive: (see below)

I suspect it is physically broken, but I'd like to have confirmation of that. What is the best way for that ?"

Flash memory has a reputation for failing which is why you always keep a good copy of their data on a more reliable drive (internal or external hard drive or DVD). At what point do you say 'I have wasted enough time on this stupid drive' and purchase a new one. To me you should have reached that point about now. I certainly would not waste any more time on it if it was mine, I would cut it in half and toss it in the trash and replace it.

You have to be a little bit crazy to keep you from going insane.

message edited by Fingers


Reply ↓  Report •

#2
March 13, 2020 at 12:59:23
There's no data problem, I keep data on my drive as short as possible, not because they are fragile, but because you lose these things quickly, and it's a hassle to know which ones are full, which not.

So, I always keep them either empty, or with only unnecessary data on it.

I'm almost 100% certain this card worked when I last used it, copied data off it, and now find it to be non-working.

I'm not done yet, I have enough of these cards. All the working ones state "Sandisk". This one doesn't.


Reply ↓  Report •

#3
March 13, 2020 at 14:29:28
"What is the best way for that ?"
Run chkdsk on it.

Reply ↓  Report •

Related Solutions

#4
March 13, 2020 at 14:36:10
✔ Best Answer
They can simply degrade and “die” if left unconnected for a while. Seems they need volts applied after a while to re-energise them and (hopefully) preserve contents.

Apparently the same applies to SSD as well, if left unused for lengthy while. They can slowly degrade and contents lost. The drive can be reformatted ok afterwards as best I understand ir.


Reply ↓  Report •

#5
March 14, 2020 at 06:58:31
The odd characters & out-of-whack dates are a clue. Could it be infected rather than corrupted? Did you try deleting the partition instead of trying to format? Is it a legit card or an eBay/Chinese knock-off? Did you try booting off a Linux Live CD & then see what you can do with it? This is old but might be helpful:

https://forums.techguy.org/threads/...


Reply ↓  Report •

#6
March 15, 2020 at 04:10:30
> Run chkdsk on it.

Forgot to mention this, but it stated a lot of unusual lines, then said:
Do you want to convert lost chains to files ?

If you press Yes, it would do something, and return to the prompt without any further message.
The problem then is still the same, and if you re-run CHKDSK, the same would happen.


Reply ↓  Report •

#7
March 15, 2020 at 04:17:45
> The odd characters & out-of-whack dates are a clue. Could it be infected rather than
> corrupted?

It's possible, but why only this card ? The card typically is empty, or has media files (video, foto) on it, but in this case in what presumed empty anyway.

> Did you try deleting the partition instead of trying to format?

Possibly, but only after a failed format

> Is it a legit
> card or an eBay/Chinese knock-off?

It may be one that came with such a device (GPS, camera, ..). I know these cards are lower quality, but they surely did work, for some time, and they had the promised storage (that is, the usual 75% that is promised marketing-wise.

> Did you try booting off a Linux Live CD & then
> see what you can do with it? This is old but might be helpful:
>
> https://forums.techguy.org/threads/...
>

That seems like a lot of work.

At this point, the card doesn't want to assign a drive letter anymore


Reply ↓  Report •

#8
March 15, 2020 at 07:16:53
have you checked if it's mbr/gpt?
try to convert it

Reply ↓  Report •

#9
March 16, 2020 at 04:06:33
No clue if it is MBR or GPT, but it was a FAT32 format

Now, it doesn't show up anywhere, anymore. One thing I didn't try is to see what it would do in MiniTool

Tried to format it with external devices, but they couldn't do that.

Recuva did offer me a file to recover, one that I know was written to it by me, I think I tried to recover that - just to see what would happen - and it couldn't do it for some reason.

It is werid however that it could state the name of a file that was on that disc; it proves that it someway could read it.

But now, as stated, I can't get it to be a drive with a drive letter anymore ..


Reply ↓  Report •

#10
March 16, 2020 at 04:42:51
SD Card Not Showing Up or Working in Windows 10/8/7
https://www.easeus.com/data-recover...

Reply ↓  Report •

#11
March 16, 2020 at 05:07:00
I'll have a test with some EaseUS software once and if my card gets detected again in Windows

It's funny that most of these "Solutions" require a working card to be present, while just that is the issue.

For example, Solution 3: "Run CHKDSK to Make the SD Card Detectable"

If the card is not "detectable", how ... ?


Reply ↓  Report •

#12
March 16, 2020 at 11:18:26
If the card is not detected by Windows, Drive Manager, and CHKDSK, then it probably is physically bad. You can also look in BIOS to see if it shows up there but I have doubts about that as well.
Note that if your card reader is part of a desktop case or add on port it probably is run as part of a USB expansion hub. This will probably not then show up in BIOS because it requires Windows Drivers to run. To be sure that the card reader is working (so as not to waste any more time than necessary) try a different SD card and make sure that it is working. If not then there is your issue. If it works then the card is likely bad and not recoverable.

You have to be a little bit crazy to keep you from going insane.


Reply ↓  Report •

#13
March 16, 2020 at 15:03:11
Try #5 above. Deleting the partition will allow you to create a new partition and then format that partition. Goo chance there is nothing wrong with the card. That said, you are using the least reliable media for storage. Better to use an external hard drive or for smaller files, CDR or DVDR disks.

Reply ↓  Report •

#14
March 17, 2020 at 01:45:27
Fingers; that sort of sums it up. Unfortunately, the card is no longer readable anymore, by any of these:
- Windows Explorer or Windows CMD (means: no drive letter)
- Disk Management (diskmgmt.msc)
- Device Manager (devmgmt.msc)
- MiniTool

It was readable at the start of this thread, and now it's gone. I have tried 3 different reading devices. I also tried other cards on the same reader device, and these cards all work. At some points, the card got quite warm, it may have done that earlier, not sure there.
None of my Windows seems to be infected (!), so I think one can rule out virus infection.

I'm curious on the EaseUS tools that were listed, one stated it works similarly as CHKDSK. But I haven't tried that.


Reply ↓  Report •

#15
March 17, 2020 at 01:55:07
> Try #5 above. Deleting the partition will allow you to create a new partition and then
> format that partition. Goo chance there is nothing wrong with the card.

The devices in question that use the cards, also have a formatting feature. No clue what they do, but some create weird partitions. I'm not a fan of partitioned drives, so I have a tendency to destroy unneeded partitions (I find them all unneeded), and then format. No problem there.

One of the annoying things that happens is, is that a tool like CHKDSK doesn't reallycheck a Disk. It checks the partition of the disk you tell it to check. For example: one device is making a 100MB partition - even if the card is 32GB - and if you insert it in Windows, it will start checking that 100MB partition. The other disk space is Raw space, which can be used by the device that created it, but not by Windows. Well, not without changing something. If there is a hardware issue, the chance is bigger it is in the larger, raw, section, than it is in the small section.

> That said, you
> are using the least reliable media for storage. Better to use an external hard drive or
> for smaller files, CDR or DVDR disks.
>

I'll do that, I'll insert a blank DVD in my DashCam and let you know how that works.

No, seriously: if one lesson is to be learned: avoid unbranded SD cards. Nothing that surprises me, but it's interesting to know how far it can be pushed. This particular card may have been used quite a lot. I have many cards, and they rotate a lot. They usually ship one with such devices, and non surprisingly, it never is a SanDisk.

I'm not sponsored by SanDisk, but I'll tell ya: buy SanDisk.


Reply ↓  Report •

#16
April 3, 2020 at 01:01:41
That would mean your SD card is about to give up on you. Is the card still under warranty? I'd suggest getting it replaced under warranty if you cannot even format it using your PC.

Reply ↓  Report •

#17
April 4, 2020 at 12:37:07
The most common reason for a corrupt USB flash drive is improper removal. Use the "safely remove icon" by the clock.

As riider already indicated, if the partition (drive is usually 1 partition) is corrupt you may need to delete the partition, create a new partition and THEN format.

If that doesn't solve the issue then the device may be defective.

message edited by OtheHill


Reply ↓  Report •

Ask Question