Kuidas saab "tühja" ja värskelt vormindatud välkmälu kasutada ruumi?

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Kuidas saab "tühja" ja värskelt vormindatud välkmälu kasutada ruumi?
Kuidas saab "tühja" ja värskelt vormindatud välkmälu kasutada ruumi?

Video: Kuidas saab "tühja" ja värskelt vormindatud välkmälu kasutada ruumi?

Video: Kuidas saab
Video: Eesti Keeletehnoloogia 2017 keeletarkvara päev 3/3 - YouTube 2024, Aprill
Anonim
Kui kustutate kõike mälupulgalt ja vormindate seda, siis arvate, et see peaks kuvamise korral olema täiesti tühi, kuid see ei pruugi alati nii olla. Seda silmas pidades on tänase SuperUseri Q & A postitusel vastus segaduses oleva lugeja küsimusele.
Kui kustutate kõike mälupulgalt ja vormindate seda, siis arvate, et see peaks kuvamise korral olema täiesti tühi, kuid see ei pruugi alati nii olla. Seda silmas pidades on tänase SuperUseri Q & A postitusel vastus segaduses oleva lugeja küsimusele.

Tänane küsimuste ja vastuste seanss jõuab meile viisakalt SuperUserini - Stack Exchange'i ja kogukonnapõhiste Q & A veebisaitide rühmitusse.

Foto austa Adikos (Flickr).

Küsimus

SuperUseri lugeja Andrew tahab teada, kuidas tühja ja värskelt vormindatud mälupulga saab kasutada ruumi:

I recently purchased a SanDisk Cruzer CZ36 16GB USB 2.0 flash drive with FAT32 as the default formatting. I need to store files that are larger than four GB on this flash drive, so I decided to reformat the flash drive as NTFS. The flash drive also had some SanDisk SecureAccess software preloaded on it that I did not want. On my Windows 7 system, I right-clicked on the flash drive in Windows Explorer and selected Format. I did a full format by deselecting the Quick Format option.

After reformatting the flash drive, Windows tells me that it is not completely empty. If I right-click on the flash drive in Windows Explorer and select Properties, Windows gives me this information:

Why is this the case even though I just formatted the flash drive? Is this to be expected or are there some files still lingering on the flash drive? When I open the flash drive in Windows Explorer, no folders or files appear even though my system’s settings are configured to show hidden items. I find it worrisome that there is a total of 91.7 MB somehow being used on this supposedly “empty” flash drive.
Why is this the case even though I just formatted the flash drive? Is this to be expected or are there some files still lingering on the flash drive? When I open the flash drive in Windows Explorer, no folders or files appear even though my system’s settings are configured to show hidden items. I find it worrisome that there is a total of 91.7 MB somehow being used on this supposedly “empty” flash drive.

Kuidas saab tühja värskelt vormindatud mälupulga ruumi kasutada?

Vastus

SuperUseri kaasautor David Schwartzil on meile vastus:

This is normal. An “empty” NTFS file system has a number of internal files such as the master file table (“$MFT”), the log file used for file system recovery (“$LogFile”), the volume descriptor file (“$Volume”), and so on.

The largest one is probably the cluster allocation bitmap (“$Bitmap”) that keeps track of the space that is used and the space that is free. This is pre-allocated when the file system is created.

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