▁ 1 0 ▁only ▁allows ▁formatting ▁ex F AT ▁on ▁volumes ▁s ized ▁ 3 2 ▁Gi B ▁or ▁larger ▁with ▁the ▁default ▁user ▁interface , ▁and ▁F AT 3 2 ▁format ▁is ▁suggested ▁for ▁lower ▁sizes ; ▁command - line ▁util ities ▁still ▁accept ▁a ▁full ▁range ▁of ▁file ▁systems ▁and ▁allocation ▁unit ▁sizes . ▁ ▁The ▁standard ▁ex F AT ▁implementation ▁is ▁not ▁journ aled ▁and ▁only ▁uses ▁a ▁single ▁file ▁allocation ▁table ▁and ▁free ▁space ▁map . ▁F AT ▁file ▁systems ▁instead ▁used ▁altern ating ▁tables , ▁as ▁this ▁allowed ▁recovery ▁of ▁the ▁file ▁system ▁if ▁the ▁media ▁was ▁e ject ed ▁during ▁a ▁write ▁( which ▁occurs ▁frequently ▁in ▁practice ▁with ▁remov able ▁media ). ▁The ▁optional ▁Tex F AT ▁component ▁adds ▁support ▁for ▁additional ▁backup ▁tables ▁and ▁maps , ▁but ▁may ▁not ▁be ▁supported . ▁ ▁The ▁ex F AT ▁format ▁allows ▁individual ▁files ▁larger ▁than ▁ 4   Gi B , ▁facil it ating ▁long ▁continuous ▁recording ▁of ▁HD ▁video ▁which ▁can ▁exceed ▁the ▁ 4   Gi B ▁limit ▁in ▁less ▁than ▁an ▁hour . ▁Current ▁digital ▁cam eras ▁using ▁F AT 3 2 ▁will ▁break ▁the ▁video ▁files ▁into ▁multiple ▁segments ▁of ▁approximately ▁ 2 ▁or ▁ 4   Gi B . ▁With ▁the ▁increase ▁of ▁capacity ▁and ▁the ▁increase ▁of ▁data ▁being ▁transferred , ▁the ▁write ▁operation ▁needs ▁to ▁be ▁made ▁more ▁efficient . ▁SD X C ▁cards , ▁running ▁at ▁U HS - I ▁have ▁a ▁minimum ▁guaranteed ▁write ▁speed ▁of ▁ 1