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External HDD fine but unreadable on laptop

I have a 300 GB Ext HDD connecting via USB. On my desktop the HDD works fine. All files are accessable and there is absolutely no loss of data.

When plugged into my laptop the drive appears in the my computer screen (XP home with SP2 on an Acer laptop)but when I attempt to access the drive the laptop says the drive needs to be formatted. The properties indicate there is no data although the desktop says there is.

There has to be something in the Laptop causing this. The computer did recently have an issue not finding an IP address and a computer tech guys fixed that issue and said my external HDD would have to be formatted but I think he may be just a little dull.

Anyways, the laptop works fine with all peripherals working fine in device manager. Recently did a firmware update on the wifi and the intel chip to try and fix the problem but as yet no solution.

I have an external HDD in fine working order but can not access it. Do you guys have any suggestions other than a complete reformat of the C and/or D drives of the laptop or the external HDD? I have previously has this running fine for over 18 months to the laptop so it must have something to do with the recent trojan I removed.

Have up to date AVG, Spybot, and adware all recently updated and run.
8th Jun 2008

Answers (8)

0 Votes
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NTFS Filesystem.
You failed to mention the OS you are using on your desktop. If it is Vista, then try updating the laptops NTFS to 5.1 and add the current updates.

Also, look to see if you have assigned the external disk a drive letter on the laptop before the above.
8th Jun 2008
0 Votes
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A couple of things to try
Reconnect the Drive to your desktop PC and Click on Start, Run and type in cmd and press Enter.

At the command prompt type in chkdsk volume:/r and press Enter.

If it finds any problems it should correct them. When it has finished try it in the Notebook.

If there is no sucess from that try this on the Notebook.

Go into "Control Panel"
Open "System"
Click the "Hardware" tab
Click "Device Manager"
Expand Universal Serial Bus controllers section.
Right-click every device under the Universal Serial Bus controllers and then click Uninstall to remove them one at a time.
Restart the PC, and allow the computer to reinstall the USB
controllers.
Plug in the removable USB storage device, and then test to make sure
that the issue is resolved

A Powerd USB Hub could also be tried.


You can use the Hard Drive Makers Testing Utility to Test the Drive

Hitachi / IBM - DFT "Drive Fitness Test"
http://www.hgst.com/hdd/support/download.htm
Works with all manufacturers

Western Digital "Data Lifeguard"
http://support.wdc.com/download/index.asp#dlgtools
Works with WD drives only


Fujitsu "FJDT"
http://www.fel.fujitsu.com/home/drivers.asp?L=en&CID=1
Works with fujitsu models only

Samsung "hutil"
http://www.samsung.com/Products/Hard...ties/hutil.htm
Compatability unknown...

Seagate "Seatools"
http://www.seagate.com/support/seatools
Works with Seagate drives only

Let us know how you get on.
8th Jun 2008

Replies

This post is an excellent resource, which I have carefully archived for future reference. If I ever have occasion to respond to a similar query in this Forum, True Blue will be cited as the authentic source.

Appreciatively,

Rick/Portland, OR
nepenthe0 9th Jun 2008
Typed in on desktop:
cmd
chkdsk volume:/r
The drive, path, or filename are not valid.
Tried the same but with h instead of r and got a different error message (not valid or something).

Unistalled USBs and restarted laptop but still the same.

On the desktop went to properties of H drive, tools, check disk options, auto fix file. Went through three phases but no difference.

External HDD still works fine on desktop but not laptop. Laptop is the main computer. Desktop is old and an emergency back up which is kept up to date.

Under properties found the following:

NTFS file system
No volumes
Name is: ST332062 0A USB device
save@... 10th Jun 2008
Found the following in device manager USB mass storage device details. I do not remember seeing this before.

Device Instance lds

USB\VID_067B&PID_2507\13


Given my recent troubles with the laptop not finding IP addresses (now fixed) I can not help but think this may be part of the problem.
save@... 10th Jun 2008
0 Votes
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If you where to tell us the Make & Model
Of the external Drive it would helpful. If it is a Powered Device with it's own Power Pack you need to look at the Partition Type and alter as required.

If it is a Unpowered type you need a Powered USB Hub or if it has 2 USB Plugs on the end of the USB Cable where it plugs into the NB you need both of these plugged into the NB not a Hub or other adapter. The reason here is that modern NB do not have a lot of power available at the USB Sockets so external HDD's need to get their power elsewhere. A powered USB Hub will provide 500 MA for each USB Port and allow the drive to run correctly. The NB can not supply this much Power at it's USB Ports.

Alternatively you could plug it into your Desktop and Network the NB to the Desktop and transfer data to the external Drive from the NB that way. But you should tell us what you have running here for directions on how to do this. Knowing that there is XP home on 1 computer isn't enough information.

Col
9th Jun 2008
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Answers so far...
OS on both desktop and laptop started as 98SE, thence XP home and then SP1 in that order prior to anything else going on.

Desktop is the Frankenstein's monster of desktops with a little bit of this and that scavenged from discarded computers.

The drive consistantly comes up with H drive. I have renamed the drive "300GB HDD" on the laptop and this still shows up on the desktop but not the laptop. Only H drive.

I have yet to try everthing on ? couple of things to try". WIll let you know within a day or two once done.

The HDD drive is a single USB type with external power. Make and model is a mystery as it's an eBay one the wife got me.

I realise I need more information and will attempt to power up the desktop monster tonight and get some answers.
10th Jun 2008

Replies

ST332062 is a seagate SATA drive, for what it's worth.

If you google just ''0A USB Device'' you might not be surprised to find the model numbers in the results appear to all be seagate.

I guess I'm going to have to break down and remove the drive I'm trying to access with jellybean from the mini tower and mount it in another computer that will boot, and access it from the IDE channel, not with a USB adapter... none of the answers I've found about this problem have helped an iota.
It shows up in the Disk Management snap-in (without a drive letter), but the 'Change Drive Letter and Paths' option is greyed out (the only option NOT greyed out for that drive is Delete, and I don't really want to delete that partition yet).
All its files show up fine automounting on a linux box with the USB adapter, but I don't find a linux equivalent to jellybean.
Darr247 22nd Mar 2011
0 Votes
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File type may be the issue.
The desktop reads the HDD fine and reads it as NTFS. However, the laptop thinks it is a RAW format and then wants to reformat. Could this be the issue?
10th Jun 2008

Replies

The only solution available to you is to copy all the data on the external drive that you need to the Desktop and then plug into the NB and format from the Drive Manager.

Vista can not open Partitions that where made on a system older than it was designed for. So a lot of Drives formatted with older versions of XP will not open under Vista. You have to format the drive on the Vista computer to make it available to Vista's improved Security.

Nothing else available here I'm afraid. But if you network the Desktop to the NB you will be able to copy the files to the NB from the Desktop and then format the drive on the NB.

Col
OH Smeg 10th Jun 2008
I am only using XP Home edition with SP2 on both the desk top and the laptop.

No Vista. The XP version is old. I was one of the first to buy it in Sydney but upgrades have been done. Not Vista though.
save@... 11th Jun 2008
You only have the options of the USB Drivers are not installed on the NB or there is not enough Power available to work the external HDD.

If you have other USB Devices working properly then the USB Drivers are installed so you can only look at the available Power as the possible problem. If there was a IBM Think Pad involved it would be different but as there isn't you don't have any options left it has to be the amount of power being produced by the USB Ports in the NB.

If you have a Y USB Cable plug that into 2 Different USB Ports on the NB to see if that gives you enough power to run the external drive or if possible plug the main Y Plug into the NB and the backup Power One into the Desktop computer and see if it now works.

If it does you have proved it is the amount of power being produced by the NB's USB Ports and will have to either use a separate Power device for the Enclosure or a Powered USB Hub.

Col
OH Smeg 11th Jun 2008
that the laptop reading the HDD as Raw instead of NTFS may have something to do with it?

I'm not discounting the powered USB hub suggestion but after my extra investigation as inspired by you guys I would have thought the laptop not recognising that the HDD is NTFS whereas the desktop does recognise it as NTFS to be rather significant.

I'm now thinking the question is how do I tell my laptop to recognise the external HDD as NTFS and not RAW. Would it be a setting in the laptop?

I do not think the power via USB ports would have anything to do with the file system.
save@... 12th Jun 2008
There is not enough power to drive it properly.

And if you continue to try to run it on the NB it will suffer damage from constantly being in a Low Power status.

The Electronics will not work correctly, the motor will run slower and not generate enough speed and the Heads are more likely to drag on the Platter scraping off the material that stores your Data.

Col
OH Smeg 12th Jun 2008
I'm about to get a vasectomy in 2 days and what you have just said scares me more.

Just to make sure I've got this right:
Previously, laptop and external HDD have worked together for about 18 months with no issues. The one USB cable (still same one) and the external power source powering the external HDD. Only once the HDD was turned on would the laptop recognise the HDD. Everything was well and good.

Now I've all of a sudden had an issue with a trojan and now I need a powered USB hub in addition to the external power to read the external HDD?
save@... 13th Jun 2008
0 Votes
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Final question...I think.
Trojan has altered my computer to read the dsik as a RAW instead of NTFS. Please see post "Trojan turn my hd NTFS to FAT16(RAW)". I've down loaded testdisk 6.9 but do not understnad what I'm supposed to do.

Done this so far:

Chose teskdisk_win.exe
No log
Disk /dev/sdb - 320GB / 298 GiB [Proceed]
Intel [Enter]

What from there???
10th Jun 2008

Replies

happy
Cross-platform Drive Solutions: Using Mac drives on Windows PCs

http://www.macwindows.com/disks2.html

Jacky Howe 10th Jun 2008
OS was a clean install on top of 98SE.
save@... 11th Jun 2008
the results from my original instructions. wink
Jacky Howe 11th Jun 2008
Typed in on desktop:
cmd
chkdsk volume:/r
The drive, path, or filename are not valid.
Tried the same but with h instead of r and got a different error message (not valid or something).

Unistalled USBs and restarted laptop but still the same.
save@... 12th Jun 2008
Drive letter associated with the Drive. EG: F:
volume:/r = F:/r

Reconnect the Drive to your desktop PC and Click on Start, Run and type in cmd and press Enter.

Example:
At the command prompt type in chkdsk F:/r and press Enter. wink
Jacky Howe 12th Jun 2008
File system recognised as NTFS and size recognised as 300GB.

Got to stage 4 of the checking and stopped dead. Would go no further. Did not do even one percent.
save@... 13th Jun 2008
from OH Smeg the only other thing that it may be is your Upgrade coming back to haunt you. I don't trust Upgrades. wink
Jacky Howe 14th Jun 2008
0 Votes
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Well the Op is the easy thing
But one tip don't shave use a hair removal product like Nair you'll be far more comfortable and not get any cuts. grin

The Case of the external HDD though need not be a major issue as it may just require a new Power Pack the existing one may have started to go off and be low on either the available Voltage being supplied to the enclosure or the Current being supplied. You can test Voltage very easily but current is a bit more difficult. If you have a Multimeter that measures both Voltage & Current you can use that or a Amp Meter can be used. You will have to compare the results of the measurement with the stated Amperage on the Plug Pack.

As these are a very generic item and commonly left plugged in when not being used they get hot and this shortens the life of the bits inside the Plug. They are cheap and easily replaced with new ones but just check to make sure that any new ones that you buy have a AU Electrical Standards Approval Marking on them. A lot of these are bought in from China and do not meet AU Standards so they are not as stable as the ones that do.

Only thing to really look at otherwise is to have the same Voltage the right plug and at least the same or slightly more Amperage available from the Plug Pack. While you can go a lot bigger on the Amperage the higher you go the more expensive the bit is. Also make sure that you check the Polarity of these as well sometimes this can be a problem but it's not common.

But be extremely careful it doesn't happen often but I have had one case where the voltage was converted to DC and wasn't dropped from 240 V to the 12 V DC that it should have been. So I got hit with something like 220 VDC and that can kill you quite easily. Didn't do the Surround Sound Speakers any good either or the Sound Card in the computer I might add to. grin

While this shouldn't happen with electrical equipment that has passed AU Standards it can occasionally and you need to be careful for this reason.

I don't do any Medical Work any more but still have quite a few surgeons who owe me several favors so I have some small idea of what you are facing in a few days. But it's no big deal you tend to worry more when a Surgeon that you are doing some work for Promises to do 5 Transplants for you free. My first reaction was what do you know about me that I don't? But if you look at the medical tool they have some really nifty ones that are quite good in a tool kit. Locking Forceps are excellent for pulling Jumpers off things inside a computer and they don't break all that often. The Quacks use them to put stitches in but there really are far better uses for them Honest. laugh

Col
Updated - 14th Jun 2008
0 Votes
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I have solved the problem
Thank you to everyone who tried to help me out but it seems that I did not provide you with enough information as my soulution does not match yours and I've got it working.

Just as a quick refresher, Ext HDD works fine on desktop but not laptop. That tells me there is nothing wrong with the USB or the external power source of the Ext HDD. I was able to access everything on the desktop but not the laptop. That made me think it was the laptop. Both systems running XP home with SP2. However, the laptop recently had a trojan which may have been the problem.

My desk top file system on the C drive was a NTFS. My Ext HDD was an NTFS.

My laptop did have an NTFS file system on the C drive but is was now a FAT32 FS. Hmmm... I wan ted to know how to convert my file system to NTFS. I was told to reformat my Ext HDD. Not an option so I kept searching. Had I listened to the experts I would have lost 5 years of photos mostly backed up.

Before I tell you how I solved my problem (found info on a a software homepage in FAQ)try to do the following:

Back up all info you can just in case. Maybe even do what I did and put out your CFC and SD cards. I actually lost no important data at all doing this as the important stuff was on a second internal drive

Do a search for system32\drivers\ntfs.sys as I was missing this file and when I tried to repair my O/S this file was missing and therefore I had to do a complete reformat. Hopefully, if you have a heads up and install this file again if missing you may be able to view your Ext HDD without doing the stuff below.

# is the drive you wish to reformat such as your drive with the O/S on it. Most will be the C drive.

Go to the start buttom and look for the run command. Click on this and type in the following:

cmd
CONVERT #:/FS:NTFS

I'm going by memory here so I'll do my best.

It will say somthing like volume is currently in use. Do you wish to demount.

Click Y for yes

Do you wish to update system on next start up.

Click Y for yes. Basically once you type in the convert instruction just say yes to everything.

It may ask you for the drive label. This actually had me stuck for a short time. It is the name on your drive when you look at my computer. As an example, my laptop has ACER(C:) on the C drive. Therefore, my drive label is ACER. Similarly, my D drive has the label ACERDATA(D:) so the label is ACERDATA.

I expect this to be the end of the issue from my point of view. Some of my instructions may be a bit vague but it has been something like 2 weeks since I've finished this and I've had the vasectomy and been assessed for a bone marrow donation so I may have forgotten something but this will at least save a lot of heart ache.

Besides, I'm a call centre operator for the federal government.
Updated - 27th Jun 2008

Replies

The preceding 24 posts followed a logical and dare I say it, a thought-intensive path, depicting an interesting storyline for me to peruse at what is currently 04.45 hrs (OM local time).

Your "I have solved the problem" bears no resemblance to anything that came before. Have you posted to the correct forum I wonder?

I wish you well after your 'procedure': you are now clearly incapable of fathering any more children or have lost all interest in normal sentient activities.

I for one will never ever rely on a federal government call centre.

Sheesh, all thoughts of emigrating are now cancelled! laugh
OldER Mycroft 27th Jun 2008
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