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Questions tagged [sectors]

The tag has no usage guidance.

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What is the block size of a WDS200T2B0A/WDS200T2B0B?

Does anyone know the write block size of a Western Digital Blue SATA SSD (model numbers WDS200T2B0A or WDS200T2B0B)? I contacted WD support and they're claiming it is 512B, but most information I've ...
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Is it possible to fix number of sectors in the USB enclosure?

I have a LUKS-encrypted external USB hard drive (1TB HGST Touro S). If I put the drive into the new USB enclosure, it reduces the number of sectors by 1 and I cannot mount the filesystem anymore. Is ...
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How to spot or match the specific sector of the DVD disc in the movie?

I've been checking the condition of DVD discs with VSO Inspector. Most of time, it doesn't show any errors on the discs. However, when there's an error on a disc, sometimes it shows that there's an ...
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2answers
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Why the different arc length sector have the same size data capacity?

The sector-A and sector-B, the arc length are different, but they representing data capacity are same, such as 512KB. you see, whether the different cylinder sector's density is different? and if we ...
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1answer
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Converting Logical sector to CHS tuple on an SSD

I'm getting myself used to x86 assembly, so I figured I'd start with some 16-bit programs. To test myself, I'm creating a program that will load data off a disk, copy it to memory, and then use it for ...
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1answer
2k views

GPT PMBR Size Mismatch will be corrected by w(rite)

Linux gives error "GPT PMBR size mismatch will be corrected by w(rite)." The error message is far from self-explanatory. Does this mean that Linux will (attempt to) resize the GPT partition ...
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1answer
230 views

Reading a file using LBA addressing

Is it possible to read/execute files/programs using the LBA addressing rather than the file system location? For example can I execute /bin/sh using the LBA sector locations of it obtained using ...
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1answer
779 views

How do I determine what is the best block size for a 960 PRO M.2?

I have a Samsung NVMe SSD 960 PRO M.2. I was in the process of installing Gentoo on it. gparted notified me that the physical block size, is different than what the kernel reports. I thought the ...
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1answer
234 views

Block defective RAM sectors [duplicate]

How do I find defective RAM sectors and where? I have tried memtest, but where it does describe the sectors (if). And how to solve them exactly. First, i have tried this : https://thecomputerperson....
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Bad sectors in RAM, fixed or not?

So I have blocked some bad memory range from RAM memory. My Question is the next one, I have done it right? Here you have the info: C:\Windows\system32>bcdedit /set badmemorylist 0xFC 0xFD 0xFE ...
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1answer
235 views

Is it possible for the filesystem's logical block size to be less than the physical sector size?

Let's say we have a block device (eg. Hard Drive) with 4096 bytes sector size and no 512 bytes emulation is available (The hard drive only understands units of 4096 bytes size). Is is possible to ...
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1answer
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What actually happens with the hard drive when we resize(shrink, extend) partitions?

I have a hard drive with 4 partitions(c,d,e,f) and I want to shrink partition (e) and then extend partition (c) with the shrunk free space. What will happen with the hard drive? Will the Cylinders/...
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Do new USB flash drives use advanced format (AF)?

I just want to know if that new feature (AF - advanced format) on some hard drives, is present on flash (USB external disk) drives as well. I'm a little bit confused because a simple check on /dev/...
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1answer
3k views

What is a valid block size in a disk?

Let be a disk with the following characteristics : bytes per sector = 512 sectors per track = 50 tracks per surface = 2000 number of platters = 5 average rotational speed =5400 rpm ...
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228 views

Is it possible to find out which sectors are pending without full disk read?

I want to get a list of sectors that are reported as pending in the S.M.A.R.T. value 197 (С5) Current Pending Sector Count. Any chance to get it without resorting to a full surface scan?

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