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Am Mon, 29 Aug 2016 17:51:19 -0700 |
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schrieb Grant <emailgrant@×××××.com>: |
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> > # mount -o loop,ro -t ntfs usb.img /mnt/usbstick |
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> > NTFS signature is missing. |
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> > Failed to mount '/dev/loop0': Invalid argument |
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> > The device '/dev/loop0' doesn't seem to have a valid NTFS. |
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> > Maybe the wrong device is used? Or the whole disk instead of a |
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> > partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around? |
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> > |
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> > How else can I get my file from the ddrescue image of the USB stick? |
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> > |
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> > - Grant |
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> |
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> |
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> Ah, I got it, I just needed to specify the offset when mounting. |
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> Thank you so much everyone. Many hours of work went into the file I |
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> just recovered. |
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> |
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> So I'm done with NTFS forever. Will ext2 somehow allow me to use the |
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> USB stick across Gentoo systems without permission/ownership problems? |
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|
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Long story short: Do not put important files on USB thumb drives. They |
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are known to break unexpected and horribly. They even offer silent data |
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corruption as a hidden feature if stored away for a few weeks or 1-2 |
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years without ever connecting them. |
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|
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By the way: Many thumb drives are internally optimized to FAT and NTFS |
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usage - putting anything else on them puts more stress on the internal |
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flash transition layer, which is most of the time very simple (some |
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drives only do wear leveling where the FAT tables usually are). |
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|
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So using NTFS was probably not your worst decision. Ext2 (or even worse |
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ext3 due to its journal) may very well destroy your thumb drive faster. |
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|
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I was once able to destroy a cheap thumb drive within two weeks by |
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putting something else on it than FAT32, and wrote some multiple 10 GBs |
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to it constantly in small blocks. Now it has unusable blocks spread all |
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over its storage space. I cannot format anything else to it than FAT32 |
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now. I don't use it any longer. It no longer reliable stores files. |
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|
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Most thumb drives also need to refresh their cells internally, this is |
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part of a maintenance process which runs while they are connected. So, |
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you even cannot use them for archive storage. Thumb drives are for |
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temporary storage only, to transport files. But never use them as a |
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single copy of important data. |
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|
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-- |
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Regards, |
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Kai |
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|
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Replies to list-only preferred. |
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