[其他] 4TB HDD -- only half capacity is allocated

I bought an all-in-one mother board end of 2009, the maker is Magic Pro MP-NC81(RS780-SB700).  I recently plan to upgrade it by changing the HDD from the old one 600GB to a new one  of 4TB.  Installation of HDD and Win 7 is all perfect.  However, it just shows 2TB capacity when I click My Computer.  When I check on the Disk Management, it shows 4TB in total with C drive of 2TB and D drive of 100MB and then 0.17TB unallocated.   I did not make partitions when I installed Win 7, I have no idea why there is unallocated one. it just went in that way.   I tried to use installation disc to do something with the unallocated partition, but this unallocated partition is not detected.  It does not show in the drive list.  I then use EASEUS Partition, there is no option for me to format this unallocated partition.  I tried to increase the partition C size by moving the unallocated one to it, then it poped up a small window "Only the first 2TB are usable on large MBR disks.  Can not create partitions beyond the 2TB mark, nor convert the disk to dynamic. ", in such sense, the system does not allow to use any storage more than 2TB.   Is there anyone having any idea what happen ?   Would it be the mother board not supporting 4TB HDD ?  Appreciate any comment, thanks !

I think it is about your motherboard not supporting HDD with 3TB or above.
Take a look at this website for more information: http://www.pcworld.com/article/2 ... tb-hard-drives.html

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你塊板太舊 唔支援 GPT (>2TB Boot Disk)

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回覆 1# jeffsit


    Thanks for your info !  I am trying to update the BIOS of mother board and hope it would work.

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回覆  jeffsit


    Thanks for your info !  I am trying to update the BIOS of mother board and hope ...
jeffsit 發表於 2015-4-14 10:54



I think it may help. Since your bios does NOT support uefi.

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第一:
若果你隻大於2TB HDD係需要使用UEFI BIOS技術既主機版,先可以作為BOOT機硬碟.不過有部分硬碟製造商係早期有提供過工具解決此問題,但係小弟未用過

第二:
大於2TB硬碟係必需使用GRT分割表,而用到GRT分割表既硬碟BOOT機係需要符合上面提及既資格

第三:
作業系統係需要使用64位元版本




若果用黎BOOT機,三者缺一不可

只作儲存用途就只需符第二同第三項

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2TB 以上需要 FORMAT 做 GPT

不過底板唔一定 SUPPORT 大容量

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大概幾時開始的BIOS先support GPT。

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回覆 8# vg1234
UEFI BIOS

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大於2TB硬碟只作data 用途就用 GPT format, 不可用 MBR format
Windows 32bit OK

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