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Backing Up To USB Stick #1053695
18th Mar 2018 2:30pm
18th Mar 2018 2:30pm
Joined: Mar 2010
Posts: 3,965
Heswallish
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fish5133 Offline OP
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fish5133  Offline OP
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Having problems backing up to a usb stick. 64GB with half free. Have backed up in the past on it and it still has those files on it in a folder. last few times ive tried to back up its gone through the process taken around an hour to do but when i go into the drive they aren't there. Dont get any error messages whilst its copying over. Any clues please,

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Re: Backing Up To USB Stick [Re: fish5133] #1053696
18th Mar 2018 2:58pm
18th Mar 2018 2:58pm
Joined: Nov 2003
Posts: 21,212
Wirral
Mark Offline

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Mark  Offline

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Are the file sizes over 4GB?

Your USB stick my be formated as fat32 which has a file size limit of pretty much 4GB I can't remember if Windows would warn you of this or not.

If it's being copied over from backup software that could be a reason your not getting any errors as Windows isn't handling the backup.

If this is the case an easy fix maybe to format the USB stick as ntfs this format can support +4GB files and above.

Let us know how you get on.


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Re: Backing Up To USB Stick [Re: fish5133] #1053698
18th Mar 2018 5:14pm
18th Mar 2018 5:14pm
Joined: Jul 2008
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Birkenhead
diggingdeeper Offline

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+1 to Mark's suggestion.

However if you bought the stick on ebay (or a market etc) it could well be a hookey one, they reprogram smaller ones to appear to be bigger than they are. Usually as long as you stay under the actual size all appears normal but if you go above that size things start going wrong and disappear etc.

What actually happens depends how its been programmed, sometimes they lose old files, sometimes they lose new. Sometimes the files appear to be there in the directory listing and even have the right size recorded but that's only the index and the actual file no longer exists or is duplicate of other data on the drive. Sometimes you just get weird errors once its filled up to a certain level.

Annoyingly the bigger drives get, the longer it takes to test them and the less likely people find out they are wrong/faulty.

I've had loads of ebay refunds on them, the seller is usually deleted either before or after I have reported them. I did feel sorry one time as the seller had been making pin-money on ebay for a long time but had accidentally bought a stock of dodgy ones in all innocence which left them well out of pocket.


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Re: Backing Up To USB Stick [Re: fish5133] #1053699
18th Mar 2018 5:18pm
18th Mar 2018 5:18pm
Joined: Jun 2011
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Wallasey
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Habdab Online content
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Habdab  Online Content
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In addition to Diggingdeeper's reply, a quick search online will reveal a USB drive checker that will show the true capacity of the USB drive. Sorry I can't remember the name of it.


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Re: Backing Up To USB Stick [Re: fish5133] #1053713
19th Mar 2018 9:37am
19th Mar 2018 9:37am
Joined: Jan 2017
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Cheshire
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techgran Offline
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Best not to use them as backup as they are very sensitive to changes of temp from one computer to another. Fine for transporting files from one place to another but not long term storage. DVDs much better option.

Re: Backing Up To USB Stick [Re: fish5133] #1053720
19th Mar 2018 5:46pm
19th Mar 2018 5:46pm
Joined: Mar 2010
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fish5133 Offline OP
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fish5133  Offline OP
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Think i got it from a reputable source and when i check its properties it does say 64gb with so many used and so many free. Whats freaked me a bit is that i went to clear out my internet History and there were several thousand items to delete the number matched within about 50 the number of files i was trying to back up. Just coincidence? I dont usually have thousands of History items to delete.
Will try and back up a few files onto the USB in smaller batches rather than trying to do the entire 3gb in one go.

Re: Backing Up To USB Stick [Re: fish5133] #1053729
20th Mar 2018 10:04am
20th Mar 2018 10:04am
Joined: Dec 2010
Posts: 2,128
Oxton
Gibbo Offline
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Due to the quirky way Windows copies files and can easily get "stuck" with one file and ruin the whole copy, you might be better writing a little script using the excellent and free ROBOCOPY program.

https://social.technet.microsoft.com/wiki/contents/articles/1073.robocopy-and-a-few-examples.aspx

You could also set up a scheduled task weekly to do the backup.

Last edited by Gibbo; 20th Mar 2018 10:05am.

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