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I have checked and verified the maximum size limits for FAT32, exFAT, and NTFS partitions based on the cluster size. Physical tests were performed using MiniTool Partition Wizard 10.3 on both Windows XP and Windows 10. Some tests have also been performed using Eassos Disk Genius. The hard drives used were Seagate 5 Tb / 6 Tb / 8 Tb and WD 10 Tb. In FAT 32, the calculation is real. In exFAT, I was able to simulate limits of 256 TiB. In NTFS, the calculation is real up to 10 Tb. MAXIMUM LIMITS BY FILE SYSTEM FAT32 File System Maximum FAT32 partition size in MBR --> 8 TiB Maximum FAT32 cluster size in MBR --> 512 KiB Maximum FAT32 partition size in GPT --> 2 TiB Maximum FAT32 cluster size in GPT --> 64 KiB exFAT File System Maximum exFAT partition size --> 256 TiB Maximum exFAT cluster size --> 32768 KiB NTFS File System Maximum NTFS partition size --> 255.99 TiB Maximum NTFS cluster size --> 512 KiB MAXIMUM LIMITS BY PARTITIONING SCHEME MBR Partitioning Scheme* Maximum MBR size on hard disk with 512 byte logical sectors --> 1.99 TiB Maximum MBR size on hard disk with 4096 byte logical sectors --> 15.99 TiB *The limits for the maximum MBR size with logical sector 512 bytes and logical sector 4096 bytes is this real calculation: 1.9999999995343387126922607421875 TiB 15.9999999962747097015380859375 TiB GPT Partitioning Scheme Maximum GPT size on hard disk with 512 byte logical sectors --> 8 ZiB Maximum GPT size on hard disk with 4096 byte logical sectors --> 65536 ZiB 2^64 sectors × 512 bytes = 8 ZiB 2^64 sectors × 4096 bytes = 65536 ZiB *The actual GPT limit is determined by the real limit of file systems which is much lower. MAXIMUM LIMITS BY CLUSTER SIZE FAT32 Partition Limit Cluster 4 KiB = 0.29 TiB / 300.99 GiB / 308223.99 MiB Cluster 8 KiB = 0.59 TiB / 601.99 GiB / 616447.99 MiB Cluster 16 KiB = 1.17 TiB / 1203.99 GiB / 1232895.99 MiB* Cluster 32 KiB = 2.35 TiB / 2407.99 GiB / 2465791.99 MiB Cluster 64 KiB = 4.70 TiB / 4815.99 GiB / 4931583.99 MiB Cluster 128 KiB = 8.00 TiB / 8192.00 GiB / 8388607,50 MiB Cluster 128 KiB = 9.40 TiB / 9631.99 GiB / 9863157.76 MiB Cluster 256 KiB = 18.81 TiB / 19263.99 GiB / 19726325.76 MiB (FAT32 real limit 8 TiB in MBR and 2 TiB in GPT) *Just I exceeds only 3.4 GiB the limit for cluster 16 KiB and problems arose. exFAT Partition Limits Cluster 0.5 KiB = 0.12 TiB / 129.00 GiB / 132104.05 MiB Cluster 1 KiB = 0.25 TiB / 257.00 GiB / 263172.00 MiB Cluster 2 KiB = 0.50 TiB / 513.00 GiB / 525313.97 MiB Cluster 4 KiB = 1.00 TiB / 1025.00 GiB / 1049600.95 MiB Cluster 8 KiB = 2.00 TiB / 2049.00 GiB / 2098176.40 MiB Cluster 16 KiB = 4.00 TiB / 4097.00 GiB / 4195328.06 MiB Cluster 32 KiB = 8.00 TiB / 8192.99 GiB / 8389631.74 MiB Cluster 64 KiB = 16.00 TiB / 16384.99 GiB / 16778239.30 MiB Cluster 128 KiB = 32.00 TiB / 32768.99 GiB / 33555454.52 MiB Cluster 256 KiB = 64.00 TiB / 65536.99 GiB / 67109885.01 MiB Cluster 512 KiB = 128.00 TiB / 131072.00 GiB / 134218746.00 MiB Cluster 1024 KiB = 256.00 TiB / 262144.00 GiB / 268435456.00 MiB ...and so on to cluster 32768 KiB (32 MiB) = 8192 TiB (exFAT real limit 256 TiB) NTFS Partition Limits* Cluster 0.5 KiB = 1.99 TiB / 2047.99 GiB / 2097151.99 MiB Cluster 1 KiB = 3.99 TiB / 4095.99 GiB / 4194303.99 MiB Cluster 2 KiB = 7.99 TiB / 8191.99 GiB / 8388607.99 MiB Cluster 4 KiB = 15.99 TiB / 16384.99 GiB / 16777215.99 MiB Cluster 8 KiB = 31.99 TiB / 32767.99 GiB / 33554431.99 MiB Cluster 16 KiB = 63.99 TiB / 65535.99 GiB / 67108863.98 MiB Cluster 32 KiB = 127.99 TiB / 131071.99 GiB / 134217727.96 MiB Cluster 64 KiB = 255.99 TiB / 262143.99 GiB / 268435455.93 MiB Cluster 128 KiB = 511.99 TiB / 524287.99 GiB / 536870911.87 MiB Cluster 256 KiB = 1023.99 TiB / 1048575.99 GiB / 1073741823.75 MiB ...and so on to cluster 32768 KiB (32 MiB) = 131040.00 TiB (NTFS real limit 255,99 TiB) *Values from cluster 4/8/16/32/64 have been calculated by the previous amounts and I have not verified their correct operation. I think the calculation is 2^32 -1 cluster. The NTFS file system is limited to 32 bits, so the above limits cannot be exceeded under any circumstances. https://learn.microsoft.com/es-es/windows-server/storage/file-server/ntfs-overview In theory, the difference between MBR and GPT is that GPT is capable of redirecting 64 bytes physical sectors. Therefore, with GPT, is it possible to exceed 2 TiB on a hard disk with 512 bytes physical sectors by formatting with a 4 KiB cluster size, and exceed 16 TiB on a disk with 4096 bytes physical sectors by formatting with a 8 KiB cluster size?* *I haven't verified this last point. Let's see if a user with disks larger than 16 TB can confirm if partitions larger than 15.99 TiB are possible.

Hello, everyone. I recently did a fresh install of Microsoft Windows NT 4.0 Workstation inside Virtual PC 2004, allocated 64 MB memory to the VM, created a fixed 4 GB hard disk (4,095 MB) image, partitioned and formatted the hard disk as NTFS v1.2 file system. Windows NT 4.0 installed without a hitch. However, when I used a disk mounting utility called IMDisk to view the contents of the partition formatted as NTFS, Windows 2000, the host OS upgraded the NTFS partition to version 3.0. After I unmounted the hard disk image, I powered up the Windows NT 4.0 Workstation VM again and when I attempted to run the CHKDSK command, I get this error message: I looked at this page regarding Windows NT 4.0 CHKDSK refusing to check NTFS v3.0/v3.1 volumes (KB196707) and it wasn't very much of a help at all. What baffles me is that I looked at this forum thread, NT4 NTFS Versions by nt4-ever on 2007-07-19 and it mentioned hacks and workarounds including NTFSCHK, a utility to run the Windows 2000 version of CHKDSK from Windows NT 4.0 and another utility called Mark4NTFS, a Windows NT 4.0 utility to revert the partition from NTFS v3.0 down to NTFS v1.2. I tried to download a utility called Mark4NTFS.zip and found that the site that was hosted on it was gone! There was also mention of the KB872952 hotfix, but I can't seem to find the hotfix available for download at all either. Are there any good utilities or disk hex editing hacks that will help fix this problem? I know that the consequences are that every time I attempt to mount a NTFS v1.2 formatted volume with IMDisk under Windows 2000 or Windows XP, it will upgrade the version of the file system on the mounted hard disk image. Let me know what you can come up with.

After much of tests i was able to write a Powershell Script, that replace, all inherits of all folders and subfolders (even the one with long names), without taking the Ownership ! Reasons: - Taking the Ownership of a Windows Folder can make much Problems ! (I dont like solutions, that can make more problems than they solve, and i even dont like it, if people say, dont change Permissions of systemfolders blabla - Me, the Owner of my Harddrive, like to have R/W Permissions to all Folders, but some folders get there permission inherit from a Top Folder, and so, i wasnt able to set their permissions... so many commands iacls, dir -ad, some powershell commands and ways, just didn´t do it, but i was able to to it (R4 never gives up...) 1) You need to allow Powershellscripts - in a Powershell console (with Adminrights) run: Set-ExecutionPolicy RemoteSigned (maybe "unrestricted could do the job too, you can set it back to restricted later) 2) Then run the script (with Adminrights too) 3) THis could take a while !!! Some really rare folders (probably Symbolic NTFS Links, Junctions or Similar) give Errormessages, - you can ignore it ! cd "C:\" foreach ($i in Get-ChildItem -Recurse -Force| ?{ $_.PSIsContainer}) { echo $i.FullName $acl=Get-ACL $i.FullName $acl.SetAccessRuleProtection($True, $True) Set-Acl $i.FullName -AclObject $acl } (this little success brings me some steps forward, in getting a clean os, - next step is setting r/w permissions for buildIN Admin, and then check the 1355 dll´s i identified, that can be called by regsvr32) - (maybe i could replace reginherits too...) mfg R4D3 Edit: Uhm, sorry my Script seems to switch all folderinherits like 180 degree (good for folders with inherits, but not for folders without - SetAccessRuleProtection($True, $False) seems to be better, and with giving Adminrights this hopefully does it: Edit: Just moved $acl.SetAccessRuleProtection($True, $True) before the new rule (cause, first the existing inherits must be replaced with local one, before the new-Object Rule, took them off and give Built-In Admin permissions.... cd "C:\" foreach ($i in Get-ChildItem -Recurse -Force| ?{$_.PSIsContainer}){ echo $i.FullName $acl=Get-ACL $i.FullName $person=[System.Security.Principal.NTAccount]"BUILTIN\Administrators" $access=[System.Security.AccessControl.FileSystemRights]"FullControl" $inheritance=[System.Security.AccessControl.InheritanceFlags]"ObjectInherit" $propagation=[System.Security.AccessControl.PropagationFlags]"None" $type=[System.Security.AccessControl.AccessControlType]"Allow" $acl.SetAccessRuleProtection($True, $True) $rule=New-Object System.Security.AccessControl.FileSystemAccessRule($person,$access,$inheritance,$propagation,$type) $acl.AddAccessRule($rule) $acl.SetAccessRule($rule) Set-Acl $i.FullName -AclObject $acl }

Windows NTFS Compression and Native Boot VHD/ VHDX? Issues or Conflicts? I am currently cleaning out my Windows 7 x64 Ultimate SP1 for a 2 step upgrade > Win 8 > Win 8.1 and then will convert it to VHD. I have this \Windows\Installer folder that is taking a lot of space and seems to be unused mostly. Eventually, I wish to clean it out/ delete it or major stuff inside it. But, till then I was considering "compressing" option it as suggested here instead of delete/ remap right now. http://superuser.com/questions/23479/is-it-safe-to-delete-from-c-windows-installer http://superuser.com/questions/707767/how-can-i-to-free-up-drive-space-from-the-windows-installer-folder-without-killi If I do this right now (during Win 7 > 8 > 8.1) I am wondering this will cause any issues creatingin or running the VHD? I googled around for VHD and NTFS compression and did not find anything good or bad either way (with exception that Windows XP and VHD had some issues) http://blogs.msdn.com/b/virtual_pc_guy/archive/2007/05/24/be-careful-with-vhds-and-windows-xp-compressed-folders.aspx

Hallo I have searched Google a Little, and found this site, and I can see you are pretty hardcore about drives which are strange.. I have my laptop, and after a update (Windows 8 to 8.1) my computer won´t boot anymore. The strange part is that during the update (i was not at my computer when it was updating, it turned off) When I use Disk Part to reveal my drive, I can see my drive with Windows 8 is now a Raw Drive, and not a NTFS. Can you help me fix that, without formatting the drive? Here is a Logfile from testdisk quick scan. http://www29.zippyshare.com/v/24558047/file.html (somehow I´m not permitted to use THIS site uploader?)