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#1
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Problema formattazione penna 16 GB. URGENTE!
Ciao, ho una penna Patriot da 20GB che ho comperato neanche un anno fa
ed utilizzata poco. Oggi ho provato a fortmattarla sia in NTFS che in FAT ma dopo, quando provo ad inserire un file di 300 MB, mi dice che non c'entra. Incredibile. Allora ho verificato perchè ed ho notato che la penna ha solo 200 MB disponibili. Forse è stata creata automaticamente una partizione piccola che non riesco ad eliminare. L'avrò formattata una decina di volte sia con Win 7 che con Win 8, ma alla fine della formattazione leggo sempre che ha 200 MB liberi. Che posso fare? Vi ringrazio. |
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#2
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Problema formattazione penna 16 GB. URGENTE!
wrote:
Ciao, ho una penna Patriot da 20GB che ho comperato neanche un anno fa ed utilizzata poco. Oggi ho provato a fortmattarla sia in NTFS che in FAT ma dopo, quando provo ad inserire un file di 300 MB, mi dice che non c'entra. Incredibile. Allora ho verificato perchè ed ho notato che la penna ha solo 200 MB disponibili. Forse è stata creata automaticamente una partizione piccola che non riesco ad eliminare. L'avrò formattata una decina di volte sia con Win 7 che con Win 8, ma alla fine della formattazione leggo sempre che ha 200 MB liberi. Che posso fare? Vi ringrazio. It is pretty difficult to "clean" a USB stick in Windows. One problem is, the Windows utility known as "diskpart" does not recognize a USB drive as a "hard drive". And because of that, you cannot use the "clean" or "clean all" commands on the USB stick. And this recipe is just plain wrong. It assumes the partition structure on the USB drive makes sense. If the partition structure is not logical (such as happens when you image copy a hybrid Linux ISO9660 file onto the USB flash drive), this recipe will simply not work to alleviate the symptoms. What is needed, is a "bulk erase command". http://kb.sandisk.com/app/answers/de...ndows-8-system ******* To do bulk erase in Linux, you would use the "dd" disk dump command. In Windows, there is "dd.exe" available from a third party. http://www.chrysocome.net/dd # description of software http://www.chrysocome.net/downloads/dd-0.6beta3.zip # the program dd.exe --list dd.exe --list 2 output.txt notepad output.txt My USB flash drive is an OCZ Rally2 8GB flash. It has one main partition on it. The output of the above command, looks like this. Partition0 is a way of referring to the entire drive, starting at sector 0 of storage space. Partition1 is the beginning of the formatted partition (in your case, the too-small partition). When the size information shows a number, it means the partition is also "writable". \\?\Device\Harddisk3\Partition0 link to \\?\Device\Harddisk3\DR12 Removable media other than floppy. Block size = 512 size is 8019509248 bytes \\?\Device\Harddisk3\Partition1 link to \\?\Device\Harddisk3\DP(1)0-0+d Removable media other than floppy. Block size = 512 size is 8018460672 bytes We need to erase Partition0. And we can do it like this. From an Administrator Command Prompt window... dd if=/dev/zero of=\\?\Device\Harddisk3\Partition0 bs=1048576 count=130 That will erase 130MB of space, sufficient to remove a UEFI table at the beginning of the drive. An even larger erasure may be needed at times, and this would be a first attempt to prepare the USB flash drive for regular usage. To erase the *entire* USB flash, we take the number 8019509248 / 1048576 = 7548 Now, knowing how many megabytes the stick is, this erases every last byte of the USB stick. dd if=/dev/zero of=\\?\Device\Harddisk3\Partition0 bs=1048576 count=7548 That will take about 12 minutes to execute with my Rally2 USB stick. So that is one of the few ways I have, of dealing with USB flash devices having bad setups on them. ******* While this method looks promising, diskpart does not always list the USB flash as a hard drive, as in the illustration. For example, right now, diskpart is not listing my OCZ Rally2 8GB USB flash stick. So I cannot follow this recipe and use the "clean" command. Whether diskpart lists the USB flash drive, will depend on whether the RMB (Removable Media Bit) is a zero or a one. http://www.hecticgeek.com/2013/01/re...-dd-windows-8/ And that's why that article refers to "dd", and "dd" is the method I described above. To use "dd", the user account must belong to the Administrator group, as only the Administrator can do block access to the USB storage via the "dd" command. You can use an Administrator Command Prompt window to use "dd.exe". Maybe someone else can suggest a program with a nice GUI for this purpose. I could locate such a program, but I couldn't be sure the program was safe to use. And any program that supports disk erasure, is dangerous. If you make a typing mistake with "dd.exe", an entire hard drive can be erased. So be very very careful... Make sure you have positively identified the correct drive, before issuing the command. Using the Windows "format" command, will achieve nothing. It is the partition information that needs to be erased, and Disk Management or DiskPart cannot always do what is required. Thus a third-party tool approach is needed. Paul |
#3
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Problema formattazione penna 16 GB. URGENTE!
100000000000000000 THANKS, now I solved my problem.
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#4
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Problema formattazione penna 16 GB. URGENTE!
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#5
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Problema formattazione penna 16 GB. URGENTE!
What did you end up doing, to fix it ?
This link was very useful: http://www.hecticgeek.com/2013/01/re...-dd-windows-8/ |
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