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[Q] usb thumbdrive not mounting

OP r2d2tek

9th February 2011, 08:22 AM   |  #1  
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My first post, but I've been reading in this forum for two months, a couple hours each day. It's habit forming.

Gtab, tnt lite v.4.1.0

I have a USB adapter made by Sigg that has a 16gig microSD inserted. Formatted (several times) FAT32. When inserted in the gtab USB host slot the disk is not mounted without a lot of plugging and unplugging and praying to the gods. There have been a few messages telling me that the 'card is damaged' when it is not. The microSD card works fine when inserted in the gtab's microSD slot. But it can take hours of fiddling to get the card to mount in the USB slot.

After lots of searching it seems that everyone else takes USB flash drives on the gtab for granted. They all seem to work. Mine doesn't, but works fine in my XPpro 32bit laptop.

If anyone can give me some ideas for troubleshooting this I'd appreciate it.

By the way, this forum is something of a phenomenon. After looking at the gtab threads I went out and bought mine at Sears. What better way to get acquainted with Android? My thanks go out to everyone here who has contributed. Someday I might be able to contribute as well.

I think about ways to better manage the gtablet xda forum, a lot. It has become a monster - but it's not a bad monster, more like a cute and cuddly Sesame Street monster.

How to organize all this fabulous information so that it can be easily searched and utilized? Good question.

All I can say is - keep up the good work. This forum is a fantastic resource.

Thanks all
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9th February 2011, 03:13 PM   |  #2  
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Two thoughts:

First: I'd change the title. This isn't a thumbdrive issue, really, so much as a USB SD Reader problem.

Second: I've run into similar issues myself. But I've noticed that I have a couple odd ball readers tht don't work on Mac but does work on Windows. This may be a driver issue. My suggestion would be to try another SD card reader and see if that makes a difference.
9th February 2011, 04:43 PM   |  #3  
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I also have a USB adapter with a micro SD inside of it. I find that it does not mount on bootup, but it mounts fine if I remove it and re-insert it.

I was wondering if there is an app for sending a software command to mount the USB. I have looked, but have not found.
9th February 2011, 06:37 PM   |  #4  
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smalis, my question exactly!

Taking aaltieri's reply into consideration I experimented with a plain-jane thumbdrive, an adapter with a standard SD, and my adapter with the microSd. Others have demonstrated that adapters with more than one slot will not work. Both my adapters have one slot only.

So here's the intriguing results: The plain-jane thumbdrive is just as unreadable as both adapters UNLESS you boot the machine with the adapter/thumbdrive in the slot, then remove it and put it back in. Then they all read after a short detection period. BUT once the drives are removed after detection they cannot be read again until the machine is shut down and rebooted with the drive in, then remove it and put it back in for detection.

What we need is a method for mounting and unmounting USB drives. I've searched and cannot find a way to unmount the drive under tnt lite. It does not show up in settings/storage like the sd cards do.

By the way, the little Sigg adapter is very tiny, sticking out only 1/4" from the side of the gtab. I got it at Fry's Electronics for $6. I leave it in the slot full-time and it helps keep the power button from being activated when the gtab's inside it's sleeve. I use a Belkin 'non-slip' netbook sleeve (also at Fry's) and the gtab fits only slightly loose. I use a couple of ultrathin mouse pads/screen protectors, one on each side, to increase padding. The Belkin sleeve is difficult to drop due to the grippy sides. The ultrathin mouse pads are marketed for netbook use, to put under the lcd when closing the lid to protect the screen (also Fry's Electronics - what can I say, I'm hooked on the place).

The idea I had was to have 16gig in the SD slot and 16gig in the USB slot. The 32gig microSDHC's are cost prohibitive for me right now. And I still have 11gig remaining on the internal memory. I'd better get to work filling it . . .
9th February 2011, 08:33 PM   |  #5  
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Yeah, I have one of those tiny USB micro-SD adapters also (elago Mobile Nano II USB 2.0 microSDHC Flash Memory Card Reader from Amazon), and am very happy with its small footprint.

I had same idea as you - I have a Wintec 16 GB Class 10 MicroSD (~$30 on Newegg) in the SD slot and another one in the USB slot.

However, I have no problem reading the USB slot after unplugging and plugging it in once, or multiple times.

The only time I cannot read it is when I boot with it in. Then, I have to unplug it and plug it in once.

Yours seems more flaky.
11th February 2011, 02:44 PM   |  #6  
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Just wanted to note that I had similar issues reading the contents of a FAT32 formatted thumbdrive when using the default iFileManager on Vegan. I downloaded the File Manager app by Adao Team on the market and I can read the thumbdrive contents just fine when using that app.
14th February 2011, 03:22 AM   |  #7  
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A follow up for anyone interested.

I migrated to vegantab 5.1 to get mouse and keyboard functionality. I also loaded the small update to 5.1 that has sniffer included.

I don't think sniffer is much to write home about, but it does mount all the usb 2.0 drives and even all the multi-adapters that I've thrown at it. Some posts have pointed out that the multi-adapters don't work. But they do, at least in my experience. I used a Sony adapter that has sd, micro-sd, sony's memory stick, compact flash, and some other port. My 16gig compact flash cards from my camera are read without a problem AFTER opening sniffer. The iFile manager that comes with vegantab does not see the usb 2.0 or the adapter until sniffer is opened. Then the system sees the drives with no problem.

It works every time.

I decided to use an HP wireless mini keyboard. It's a perfect match for the gtab. I thought about dropping $80 for the new Verbatim folding bluetooth keyboard but the HP allows for much better touch typing and I need to do that. Best Buy has a cd/dcd carrying case made by Init that is essentially a hard case that fits the HP keyboard perfectly one the cd sleeves are removed. There's room under the keyboard for headphones, flash memory, and other odds and ends. With vegatab and the mouse fix, the keyboard is easily detected and the mouse pointer works great.

Anyway, it looks as if the mounting issue is one that can easily be taken care of with an app. Another more recent poster on this issue has noted that changing file managers allowed him to mount usb drives that iFileManager would not see. But sniffer works and it's there for seperate download if anyone wants it. I think it looks like crap and doesn't do much. I'll use it in the meantime, though.
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17th April 2011, 06:37 AM   |  #8  
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Quote:
Originally Posted by r2d2tek

A follow up for anyone interested.

I migrated to vegantab 5.1 to get mouse and keyboard functionality. I also loaded the small update to 5.1 that has sniffer included.

I don't think sniffer is much to write home about, but it does mount all the usb 2.0 drives and even all the multi-adapters that I've thrown at it. Some posts have pointed out that the multi-adapters don't work. But they do, at least in my experience. I used a Sony adapter that has sd, micro-sd, sony's memory stick, compact flash, and some other port. My 16gig compact flash cards from my camera are read without a problem AFTER opening sniffer. The iFile manager that comes with vegantab does not see the usb 2.0 or the adapter until sniffer is opened. Then the system sees the drives with no problem.

It works every time.

I decided to use an HP wireless mini keyboard. It's a perfect match for the gtab. I thought about dropping $80 for the new Verbatim folding bluetooth keyboard but the HP allows for much better touch typing and I need to do that. Best Buy has a cd/dcd carrying case made by Init that is essentially a hard case that fits the HP keyboard perfectly one the cd sleeves are removed. There's room under the keyboard for headphones, flash memory, and other odds and ends. With vegatab and the mouse fix, the keyboard is easily detected and the mouse pointer works great.

Anyway, it looks as if the mounting issue is one that can easily be taken care of with an app. Another more recent poster on this issue has noted that changing file managers allowed him to mount usb drives that iFileManager would not see. But sniffer works and it's there for seperate download if anyone wants it. I think it looks like crap and doesn't do much. I'll use it in the meantime, though.


I didn't even think of Sniffer. I have a cheapo USB reader that was intermittently working (1 out of 60?). After your suggesting, if I open sniffer then plug it in, it sees it every time.
17th April 2011, 04:38 PM   |  #9  
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Folks,

I don't know that there is an answer I have seen to all your questions/observations.

I will say:

1. microSD post and USB on the tablet are not plug and play like Windows.

2. When I change my USB key or microSD, I always shut down and likewise I
always shut down before removing them.

3. Yes, I know that's a pain if you change a lot, but for me it makes sure
Android's flicted OS searches for, finds them, and in turn properly shuts them
down before I remove them.

For me, in and out as need just doesn't work.

Rev

EDIT: P. S. -- You all seemed like sharp guys. Should I have asked if you
are looking for the files under /USBdisk?
Last edited by butchconner; 17th April 2011 at 04:41 PM.
17th April 2011, 04:50 PM   |  #10  
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In my experience, thumb drive mounting is hit and miss. Maybe it's just the drives that I'm using, but it's unreliable. Also, with Gingerbread and Pershoot's kernels, he references having to revert something in order to get USB mount to work (thinking about it, that might refer to mounting the tab to a computer). I would suggest getting used to unmounting your external micro card in Android and growing out a fingernail or two so you can pop that sucker out. I think this is a low priority to the devs, and maybe it should be.

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