{"id":2278,"date":"2021-12-29T03:03:57","date_gmt":"2021-12-29T03:03:57","guid":{"rendered":"https:\/\/yousanusb.com\/?p=2278"},"modified":"2026-07-26T01:44:54","modified_gmt":"2026-07-26T01:44:54","slug":"about-usb-flash-drive-real-capacity","status":"publish","type":"post","link":"https:\/\/www.yousanusb.com\/tr\/about-usb-flash-drive-real-capacity\/","title":{"rendered":"USB belle\u011fin ger\u00e7ek kapasitesi neden etikette yazan kapasiteden k\u00fc\u00e7\u00fckt\u00fcr?"},"content":{"rendered":"

The primary reason the actual capacity of a USB flash drive is smaller than the labeled capacity is that manufacturers and computer systems use different methods to calculate capacity. Manufacturers use the decimal system (1GB = 1000MB, 1MB = 1000KB) for capacity calculations, while computer systems recognize capacity based on the binary system (1GB = 1024MB, 1MB = 1024KB). When converting between these two systems, the actual displayed capacity will naturally be smaller than the labeled value. This is a normal technical discrepancy and not a product defect.<\/p>\n\n\n\n

USB Bellek Kapasite Hesaplama Y\u00f6ntemi<\/h2>\n\n\n\n

(1) \u00dcretici’nin Ondal\u0131k Hesaplamas\u0131<\/h3>\n\n\n\n

USB manufacturers use the decimal system to label storage capacities. The core conversion rules are: 1GB = 1000MB, 1MB = 1000KB, 1KB = 1000B. This standard aligns with the storage industry’s common measurement practices, enabling users to intuitively understand the product’s nominal capacity range. It also serves as the unified specification for manufacturers when labeling capacities on USB drives, hard disks, and other storage devices.<\/p>\n\n\n\n

\u00dcreticiler kapasite etiketlemesi i\u00e7in ondal\u0131k standard\u0131 \u015fu \u015fekilde kullan\u0131r:<\/p>\n\n\n\n

\u2022 1GB = 1000MB<\/p>\n\n\n\n

\u2022 1MB = 1000KB<\/p>\n\n\n\n

\u2022 1KB = 1000B<\/p>\n\n\n\n

\u00d6rne\u011fin, 64GB'l\u0131k bir USB belle\u011fin toplam bayt say\u0131s\u0131 \u015fu \u015fekilde hesaplan\u0131r: 64 \u00d7 1000 \u00d7 1000 \u00d7 1000 = 64,000,000,000 bayt.<\/p>\n\n\n\n

(2) \u0130\u015fletim Sistemlerinde \u0130kili Hesaplama<\/h3>\n\n\n\n

USB bellekler i\u00e7in ikili hesaplama y\u00f6ntemi, bilgisayar sistemlerinin kapasiteyi tan\u0131mak i\u00e7in kulland\u0131\u011f\u0131 standartt\u0131r depolama kapasitesi<\/a>. Ge\u00e7erli senaryolar: Windows veya Mac gibi i\u015fletim sistemleri USB bellek veya sabit disk gibi depolama ayg\u0131tlar\u0131n\u0131 okudu\u011funda, bu, ger\u00e7ek kullan\u0131labilir kapasiteyi hesaplaman\u0131n varsay\u0131lan y\u00f6ntemidir. Bilgisayar sistemleri kapasiteyi ikili (binary) standartlara g\u00f6re tan\u0131r, \u00f6zellikle:<\/p>\n\n\n\n

\u2022 1GB = 1024MB<\/p>\n\n\n\n

\u2022 1MB = 1024KB<\/p>\n\n\n\n

\u20221KB = 1024B<\/p>\n\n\n\n

Bu nedenle bir 64GB USB belle\u011fin sistemdeki ger\u00e7ek kapasitesi \u015f\u00f6yledir: 64.000.000.000 \u00f7 1024 \u00f7 1024 \u00f7 1024 \u2248 59.6GB. Bu sonu\u00e7, \u201864GB, 57GB g\u00f6sterir\u2019 \u015feklinde yayg\u0131n g\u00f6zlemlenen durumla yak\u0131ndan \u00f6rt\u00fc\u015f\u00fcr (kalan kapasite di\u011fer etkenler nedeniyle daha da azalabilir).<\/p>\n\n\n\n

USB Bellek Ondal\u0131k-\u0130kili D\u00f6n\u00fc\u015f\u00fcm Parametre Kar\u015f\u0131la\u015ft\u0131rma Tablosu<\/h2>\n\n\n\n
Kar\u015f\u0131la\u015ft\u0131rma<\/th>Ondal\u0131k Hesaplama<\/th>\u0130kili Hesaplama<\/th><\/tr><\/thead>
D\u00f6n\u00fc\u015f\u00fcm katsay\u0131s\u0131<\/td>1000'in katlar\u0131 halinde<\/td>1024 bir katt\u0131r (2 \u00fczeri 10)<\/td><\/tr>
D\u00f6n\u00fc\u015f\u00fcm ili\u015fkisi<\/td>1GB=1000MB<\/td>1GB=1024MB<\/td><\/tr>
<\/td>1MB=1000KB<\/td>1MB=1024KB<\/td><\/tr>
<\/td>1KB=1000B<\/td>1KB=1024B<\/td><\/tr>
Birim<\/td>Bety<\/td>Bety<\/td><\/tr>
sahne<\/td>Depolama \u00dcreticisi Etiketli USB Bellek<\/td>Windows, Mac ve di\u011fer sistemler cihaz\u0131n ger\u00e7ek kullan\u0131labilir kapasitesini tan\u0131r.<\/td><\/tr>
<\/td>Sabit disklerin ve di\u011fer cihazlar\u0131n nominal kapasitesi<\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Yayg\u0131n Derecelendirilmi\u015f Kapasitelerin Ger\u00e7ek Kullan\u0131labilir Kapasitesi i\u00e7in Referans<\/h2>\n\n\n\n

A\u015fa\u011f\u0131daki tablo, \u00e7e\u015fitli y\u00f6ntemlerle hesaplanan kapasite farklar\u0131 i\u00e7in referans de\u011ferleri sunar. Sonu\u00e7lar bu aral\u0131kta yer al\u0131yorsa normal kabul edilir ve USB bellek kalitesi sorunu anlam\u0131na gelmez.<\/p>\n\n\n\n

Nominal kapasite<\/strong><\/td>Teorik ve Ger\u00e7ek Kapasite<\/strong><\/td>Sistem mevcut kapasiteyi g\u00f6r\u00fcnt\u00fcler<\/strong><\/td><\/tr>
4GB<\/td>yakla\u015f\u0131k 3.73GB<\/td>yakla\u015f\u0131k 3.5-3.7GB<\/td><\/tr>
8GB<\/td>yakla\u015f\u0131k 7.45GB<\/td>yakla\u015f\u0131k 7.0-7.3GB<\/td><\/tr>
16GB<\/td>yakla\u015f\u0131k 14.9GB<\/td>yakla\u015f\u0131k 14.0-14.5GB<\/td><\/tr>
32GB<\/td>yakla\u015f\u0131k 29.8GB<\/td>yakla\u015f\u0131k 28.0-29.0GB<\/td><\/tr>
64GB<\/td>yakla\u015f\u0131k 59.6GB<\/td>yakla\u015f\u0131k 57.0-59.0GB<\/td><\/tr>
128GB<\/td>yakla\u015f\u0131k 119.2GB<\/td>yakla\u015f\u0131k 115.0-118.0GB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Yukar\u0131da bahsedilen farkl\u0131 hesaplama y\u00f6ntemlerine ek olarak, k\u00fc\u00e7\u00fck tutars\u0131zl\u0131klara katk\u0131da bulunabilecek ba\u015fka fakt\u00f6rler de vard\u0131r; ancak bu fakt\u00f6rler toplam\u0131n yaln\u0131zca k\u00fc\u00e7\u00fck bir k\u0131sm\u0131n\u0131 olu\u015fturur:<\/p>\n\n\n\n

(1) Sistem Dosyalar\u0131n\u0131n Kaplad\u0131\u011f\u0131 Alan<\/h3>\n\n\n\n

Bir USB belle\u011fi bi\u00e7imlendirirken b\u00f6l\u00fcm tablolar\u0131 (\u00f6rn. MBR\/GPT) ve dosya sistemleri (\u00f6rn. FAT32\/NTFS\/exFAT) olu\u015fturulmal\u0131d\u0131r. Bu yap\u0131lar, depolama alan\u0131n\u0131n bir k\u0131sm\u0131n\u0131 kaplar. \u00d6rne\u011fin:<\/p>\n\n\n\n

    \n
  • FAT32 dosya sistemi, Dosya Tahsis Tablosu (FAT) ve k\u00f6k dizin alan\u0131 i\u00e7in ayr\u0131lm\u0131\u015f alana ihtiya\u00e7 duyar; bu da genellikle birka\u00e7 y\u00fcz KB ile birka\u00e7 MB aras\u0131nda yer kaplar;<\/li>\n\n\n\n
  • NTFS sistemi, g\u00fcnl\u00fck dosyalar\u0131 ve meta veri alanlar\u0131 i\u00e7in alan ay\u0131rd\u0131\u011f\u0131ndan g\u00f6rece daha fazla yer kaplar.<\/li>\n<\/ul>\n\n\n\n

    (2) \u00d6nceden Y\u00fcklenmi\u015f Yaz\u0131l\u0131m \/ \u015eifreleme \u00d6zellikleri<\/h3>\n\n\n\n

    Baz\u0131 USB bellekler, \u015fifreleme ara\u00e7lar\u0131 veya yedekleme yaz\u0131l\u0131m\u0131 gibi \u00f6nceden y\u00fcklenmi\u015f programlarla gelir veya yerle\u015fik g\u00fcvenli b\u00f6l\u00fcmler i\u00e7erir; bunlar\u0131n t\u00fcm\u00fc kullan\u0131labilir kapasitenin bir k\u0131sm\u0131n\u0131 i\u015fgal eder.<\/p>\n\n\n\n

    (3) Firmware ve Gizli B\u00f6l\u00fcmler<\/h3>\n\n\n\n


    The firmware embedded in the USB drive’s controller chip (responsible for data read\/write and device recognition) occupies a small amount of physical capacity, typically tens to hundreds of MB. Some USB drives contain hidden partitions (e.g., areas for boot functions or firmware upgrades), which are inaccessible to users and also reduce usable capacity.<\/p>\n\n\n\n


    (4) Bozuk Bloklar ve A\u015f\u0131nma Dengeleme<\/h3>\n\n\n\n
    \n
    \n
    \"\"<\/figure>\n<\/div>\n\n\n\n
    \n

    Flash bellek \u00e7ipleri, \u00fcretim s\u00fcrecinde ka\u00e7\u0131n\u0131lmaz olarak bozuk bloklar (normal olarak okunamayan veya yaz\u0131lamayan depolama birimleri) i\u00e7erir. \u00dcreticiler bu bozuk bloklar\u0131 seri \u00fcretim s\u0131ras\u0131nda maskeler; bu da ger\u00e7ek kullan\u0131labilir kapasitenin nominal de\u011ferden d\u00fc\u015f\u00fck olmas\u0131na yol a\u00e7ar.<\/p>\n\n\n\n

    Additionally, the USB drive’s \u201cwear leveling\u201d mechanism (which evenly distributes read\/write cycles to extend lifespan) requires reserving space for data migration and mapping, accounting for approximately 2%-3% of total capacity. Before shipment, \u201cbad blocks\u201d\u2014cells incapable of stable data storage\u2014are detected and masked to prevent data loss. The greater the number of bad blocks, the more capacity they occupy.<\/p>\n<\/div>\n<\/div>\n\n\n\n


    It is normal for a USB drive to display a capacity lower than its labeled value. This is typically caused by a combination of technical specifications (calculation methods, file systems) and hardware design (manufacturer-reserved space, bad block handling). If the capacity discrepancy falls within a reasonable range (e.g., a 64GB drive showing 57-59GB, or a 128GB drive showing 119-121GB), this is a reasonable phenomenon due to calculation methods, file systems, and manufacturer-reserved space, and there is no need for concern.<\/p>\n\n\n\n

    G\u00f6r\u00fcnt\u00fclenen kapasite teorik de\u011ferin 'inin alt\u0131ndaysa (\u00f6rn. 64GB bellek < 50GB g\u00f6steriyorsa) ya da bellek, g\u00f6r\u00fcnt\u00fclenen kapasitesine uygun dosyalar\u0131 depolam\u0131yorsa (\u00f6rn. 57GB g\u00f6sterip yaln\u0131zca 10GB depoluyorsa), bu durum sahte bir belle\u011fe veya donan\u0131m ar\u0131zas\u0131na i\u015faret edebilir.<\/p>\n\n\n\n

    <\/p>","protected":false},"excerpt":{"rendered":"

    Kapasiteli flash bellek \u00fcr\u00fcnleri genellikle 1MB = 1000KB, 1G = 1000MB hesab\u0131na g\u00f6re sevk edilir; ancak i\u015fletim sistemi ikili aritmetik olan 1MB = 1024KB, 1GB = 1024MB kullan\u0131r<\/p>","protected":false},"author":1,"featured_media":2280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[140],"tags":[148],"class_list":["post-2278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-usb-flash-drive-knowledge","tag-usb-flash-drive-capacity"],"_links":{"self":[{"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/posts\/2278"}],"collection":[{"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/comments?post=2278"}],"version-history":[{"count":17,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/posts\/2278\/revisions"}],"predecessor-version":[{"id":30509,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/posts\/2278\/revisions\/30509"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/media\/2280"}],"wp:attachment":[{"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/media?parent=2278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/categories?post=2278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yousanusb.com\/tr\/wp-json\/wp\/v2\/tags?post=2278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}