## Windows Server 2012 R2 – Hard Disk Displays Blank File System in Disk Management, Unknown Partition Type

I therefore have a secondary internal hard drive used as storage on an Ubuntu machine. I have performed a new installation on the boot drive with Server 2012R2 and the secondary drive indicates the disk management capability, but the file system is empty.

When running diskpart, the list of drive partitions indicates that the partition type is Unknown. Running "convert mbr" in diskpart returns the error "the specified disk is not convertible".

How can I change the file format to NTFS without data loss?

## Hard Disk – Create an HFS + Partition Using DiskPart on Windows 10

I have read this question on the same subject. The answer mimics what I read here, namely:

create a primary partition id = af

The secret sauce is the `id = af` component. This may or may not work on `Windows 7`. I have Windows 10, where I can say:

``````DISKPART> select disk 2

Disk 2 is now the selected disk.

DISKPART> clean

DiskPart was able to clean the disk.

DISKPART> create the primary partition id = af

The arguments specified for this command are invalid.

DISKPART>
``````

`DiskPart` Is DO NOT recognize `a f` as valid `ID`.

I contacted `OWC` and asked if there was a command line version (or API) of MacDrive, and their answer was:

Thank you for contacting us here at OWC Macdrive support. I would be happy to answer your questions as best I can. In short, for the moment, we have no programmed way to format a reader. However, we are currently studying the possibility of considering our current and future product range. I would be happy to share your feedback or suggestions to the development team regarding this topic.

Another article on this topic recommended the Partition Wizard, but the author unfortunately did not do due diligence because the supported file systems are `FAT12 / 16/32 exFAT NTFS Ext2 / 3/4`.

Maybe the problem is not 7 vs 10 as much as a necessary component for Windows or an added driver. Previous answers MAY be accurate and legitimate, but incomplete. Unfortunately, MacDrive (OWC) does not add the missing component. I have their Pro version 10.

Thoughts?

## How to restore a data partition accidentally erased?

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## ubuntu – Extract the files from the vmdk file and decrypt the linux partition

So here is my problem.
I have an Ubuntu virtual machine (VMware) that does not boot anymore (it is not corrupted, Ubuntu does not start because of an error that I do not have time to solve because i need work files as soon as possible) and i need some help to recover some files.

The first problem is that trying to extract files from vdmk does not work.
I have basically two partitions:
A "boot partition" that is accessible and I can browse files and another called "native linux" that I can not access from my Windows machine (Windows asks to format the mounted partition before using it) .

So, what I'm trying to do is convert the vmdk to a vhd file (using cmd and a file included in virtualbox) and hope to access it.

In case it does not work, how can I access this partition that contains all Ubuntu files?

Now the second problem, the Ubuntu partition has been encrypted, how can I decrypt it after extracting it from the vmdk file?

Btw, I am currently working on a Windows operating system to try to fix this mess.

I really need help here because inside this encrypted partition, there are some working files that I really need for tomorrow.

Any help is appreciated!

## Why in the fragmented blockchain, a validator of the partition "A" can not verify the accuracy of the historical transactions of the partition "B"?

This question is about blockchain sharing. A method to scale the flow of a transaction.

The basic idea in the fragmented blockchains is that most of the participants
The operation or use of the network can not validate blocks in all cases.
shards. As such, whenever a participant has to interact with a
the whole story of the fragment.

What is the reason for a validator of partition A can not download and validate the correctness of all the history of fragment B?

From my point of view, this validator is able to download all of the historical transactions in any fragment (exactly similar to a non-shared blockchain), and then check the history of all transactions by tracing each transaction.

What's the problem? (Where, generally, all fragments use the same consensus algorithms and all have the same block structure.)

Update: To answer the comment, I mention here some examples of fragmented block chains, as follows:

(1) https://www.comp.nus.edu.sg/~prateeks/papers/Elastico.pdf

(2) https://infoscience.epfl.ch/record/255586/files/OmniLedger.pdf

(3) Ethereum sharding faq. "(2017) .Https://github.com/ethereum/wiki/wiki/Sharding-FAQ

(4) https://docs.zilliqa.com/whitepaper.pdf

(5) https://eprint.iacr.org/2018/460.pdf

## high sierra – Unable to resize APFS partition – "New size must be different from existing size"

I have a 1TB SSD on MacOS High Sierra 10.13.6 with the following APFS partitions:

``````\$ diskutil list
/ dev / disk0 (internal):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme 1.0 To disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk2 300.0 GB disk0s2
3: Apple_APFS Container disk1 254.0 GB disk0s3

/ dev / disk1 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS container schema - +254.0 GB disk1
Physical store disk0s3
1: macOS High Sierra APFS volume 225.1 GB disk1s1
2: APFS Volume Pre-boot 23.9 MB disk1s2
3: APFS Volume Recovery 519.5 MB disk1s3
4: APFS VM Volume 1.1 GB disk1s4

/ dev / disk2 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS container model - +300.0 GB disk2
Physical store disk0s2
1: APFS volume macOS Mojave 241.4 GB disk2s1
2: Pre-Starting Volume APFS 49.0 MB disk2s2
3: APFS Volume Recovery 1.0 GB disk2s3
4: Virtual Volume Machine APFS 20.5KB disk2s4
``````

I want to resize the macOS Higher Sierra partition shown above to ideally occupy all the free space dynamically, which I have tried to do with the help of the command:

``````\$ diskutil apfs resizeContainer / dev / disk1 0
Starting the APFS operation
Error: -69743: The new size must be different from the existing size
``````

Trying to enlarge using a fixed size does not work either:

``````\$ diskutil apfs resizeContainer / dev / disk1 500g
Starting the APFS operation
Alignment of growth delta on 246-20,000 by 920 bytes and targeting of a new physical store size of 499,999 992 bytes
Determination of the maximum physical store size targeted for this APFS container at 253-999-828 bytes.
Error: -69771: The target disk is too small for this operation.
``````

Neither Time Machine nor FileVault is enabled.

## hard drive – Create a new partition with the disk utility

I'm using OS X 10.11.6 and I want to create a new partition on my disk (disk0).

Is there a way to resize the disk to create space, then add a new partition?
When I boot from this disk, an error message appears in the disk utility. And when I use the recovery volume, I can not resize the "pie chart" in the disk utility.

```

\$ diskutil list
/ dev / disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme * 256.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Mac SSD 255.1 GB disk0s2
3: Apple_Boot Recovery HD 784.2 MB disk0s3
/ dev / disk1 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Mac SSD +254.7 GB disk1
Logical volume on disk0s2
Unlocked encrypted

```
```

\$ gpt -r show disk0
gpt show: disk0: Suspicious MBR at sector 0
start of the contents of the size index
0 1 MBR
2 32 table Pri GPT
34 6
409600 1 part GPT - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 498176832 2 pieces GPT - 53746F72-6167-11AA-AA11-00306543ECAC
498586472 1531680 Part 3 GPT - 426F6F74-0000-11AA-AA11-00306543ECAC
500118152 7
500118159 GPT table 32 sec
```

## time machine – Partition an external SSD (Win10 already installed) for Mac

My situation:
I've successfully installed Windows 10 on a Samsung T5 external SSD (1 TB size) that I can boot using my MacBook Pro 13 "(2017 model with 4 Thunderbolt 3 ports). , the disk is partitioned as follows:
– EFI Healthy Primary (or something like that) 200MB
– Primary (Bootcamp C 🙂 ~ 999 GB approximately (NTFS format)

Under MacOs (Mojave in my case), the disk appears as a single volume (Bootcamp), under the device name (which always indicates Samsung Mobile, etc.), and the indication indicates about 25 GB (used) (which Windows 10 and 975GB operating system free.

What I want:

I've installed Win10 on the outside for the rarer occasions where I need Windows, but now I think that a 1TB space is too important. I want to reuse some space in the Samsung SSD for Mac. Specifically, I would like to partition so that I have

• a TimeMachine volume (say 500 MB – my MBP is only 256 GB)
• Extra space for backing up other Mac files (I'm happy to make this exclusive to Mac, but I can also think about using the exFAT format for everyday use)
• The rest of the space (for example 200-250 GB) for the Windows10 operating system. (basically, I want to reduce Windows to a smaller size)

Is there a way to do what I want safely without messing up the installation of the Win10 operating system in the SSD? It was a tedious process to perform and I had already messed up once. I had first partitioned under Windows, creating a clearly defined volume intended for MBP. I then tried to partition it from the Mac and, in one way or another, it caused me an error while deleting the partition ( there was not enough space?) And that made me lose the EFI volume that Windows had to boot. This little piece seems to be indiscernible, invisible to MacOS and must have been falsified. This made the external SSD unbeatable for Windows!

So after having everything reinstalled, can anyone recommend a safe method to alter partitions now, without disrupting the installation of Windows already residing in the SSD?
Thank you

## What is this 11.59 GB partition on my iMac?

I do not remember seeing it before using Bootcamp and installing Windows. I installed Windows, it started to crash and, trying to repair and perform a new installation of Windows, it seems that I also crashed on my Mac. Words can not describe how much I hate Windows.

## Partition into c and 1-c

Let $$c in (0,1 / 2)$$

\$ to be a constant. Given a set of positive integers with sum $$S$$is there a partition in two subsets such that the two subsets have a sum at least equal to $$cS$$?

Yes $$c = 1/2$$it is the famous problem of partition which is NP-complete. What do we know about the complexity of other values ​​of $$c$$?

I've posted the question here, where it has been claimed that the problem is NP-hard, but without any proof or reference.