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Questions tagged [trim]

An SSD command that tells the drive which blocks of memory are no longer in use, allowing it to erase blocks containing deleted data.

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1answer
27 views

How to TRIM a pre Windows 2008 server with boot CD?

I need to TRIM some NTFS disks where the OS itself is not capable. The disks are served by a ceph cluster to KVM, where Server 2008 is running. Why? This server is going out of business and I will ...
2
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1answer
53 views

Using an external SSD without TRIM, mainly for read operations

For audio production involving DAWs and orchestral sample libraries, it is recommended that one use a dedicated SSD to store the sample libraries (I don't understand all the details of why this is ...
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2answers
63 views

Do I need to enable TRIM in all OS if multibooting?

I multiboot. Does one OS issuing TRIM to my SSD cover all partitions or not? I have a MacBook Pro (Core2Duo version 2.1 - late 2007) with the HDD replaced with a SSD. I am multi-booting it with ...
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76 views

SSD overprovisioning and encrypted LVM

I have a SSD with an encrypted (cryptsetup/luks) LVM partition. Since I'm not yet into that ssd stuff I offhandedly left approx. 10% unpartitioned for overprovisioning. Just because I was told that ...
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1answer
106 views

Samsung 860 pro / evo - do they report deterministic trim?

Regardless of the kind - DRAT or RZAT. While all the modern ssds should behave in RZAT fashion, quite a few of them don't bother reporting such feature. And some controllers (in my case - old LSI2308 ...
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1answer
256 views

Are there UASP flash drives with TRIM/UNMAP support? [closed]

It seems that most of the high-end external SSD enclosures and external SSDs support UASP and TRIM/UNMAP. Wikipedia does mention thumb drives but provides no further details: USB Attached SCSI (...
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54 views

Does SSD garbage collector notices zero-blocks? [closed]

Is GC (I have Samsung 860 Evo) smart enough to notice that a block is filled by zeros? Because of some reasons I cannot use TRIM on SSD. I think I could emulate TRIM by filling all empty spaces with ...
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39 views

An external SSD gets pretty warm when idle. Is it better to unplug it when not in use?

I recently bought an external SSD ("Sandisk extreme portable SSD"). I formatted it to NTFS with Tuxera NTFS and I've noticed that it gets quite warm when I don't use it. I've used iostat to confirm ...
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1answer
40 views

fstrim not remembering trmmed blocks after reboot

I use LUKS + LVM full disk encryption (/boot included). However, after every reboot, the system will trim all by free space, not remembering which blocks were trimmed. I'm afraid this will wear out ...
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1answer
169 views

fstrim trimming all the free space after reboot

I just upgraded to a SSD. Performance has been great. However, after every reboot, when I do a fstrim to the partitions, it will trim all the free space. And as I understand, trimming writes to all ...
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2answers
244 views

How can SSD's perform well when encrypted, or without TRIM?

As I understand SSD's, they internally manage the numbered "hard drive" sectors expected by an operating system into interior pages, which are grouped into blocks. The SSD firmware is responsible for ...
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1answer
334 views

Btrfs on SSD, “no space left on device”; catch-22 with `fstrim` and `btrfs balance`; how to recover?

The root filesystem of my Kubuntu (mounted under /) is Btrfs. I don't use -o discard as a mount option. This means I need to run fstrim on demand. In the past I hit this problem: btrfs, no diskspace ...
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1answer
119 views

If This Is TRIM, DBAN Should Work

I am informed that drive wiping tools do not work reliably on SSDs due to such features as wear leveling. Here, for example, a quote from MakeUseOf: [T]o comply with wear levelling, the SSD must ...
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1answer
53 views

Would overwriting a file with the same exact content have an negative impact on an SSD lifetime?

We are developing a piece of software that does a lot of file overwrites. For the sake of simplicity/performance, we currently don't compare the old file content with the new content that will be ...
2
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1answer
33 views

Remove middle number from multiple files and copy

I have the multiple PDF files in the specific format in a specific folder and for those particular files I need to trim the middle number using bat file and move to the destination folder with the new ...
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0answers
139 views

How to remove trailing spaces from a selection in kate

kate allows to remove trailing spaces of lines on save. As with Markdown everywhere, even within C files comments, this option is of no use at all for me. What I need is a way to clean trailing ...
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2answers
641 views

How to trim text before specifc character using notepad++

I have a file each line look like "J001.C1086" "JH001.Blend 10-111". I need to remove the leter/number before each . after remove, it look like "C1086" "Blend 10-111" Thanks!!
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1answer
185 views

Trim EOL to space in UltraEdit?

How do you trim EOL to space in UltraEdit? In Notepad++ it's menu Edit → Blank Operations → EOL to Space. 1 2 3 4 After trim it's 1234.
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1answer
76 views

Data Recovery on a Repartitioned SSD

Is data recovery possible from an SSD where the partitions were deleted, and new partitions were created, then formatted? The file system is NTFS. I understand data recovery is generally not ...
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0answers
320 views

How does TRIM work on Windows when a spanned volume is created with both HDD & SSD?

This question is similar to these two: Does Windows 7 support TRIM for Spanned Dynamic Disks? and Will Trim still work if creating a spanned volume of two disks (NOT AS RAID) But they are for an much ...
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1answer
751 views

Sandisk SSD on XP

I was wondering if this SSD supported garbage collection. I'm planning on moving my Windows XP Pro SP3 (32-bit) installation to an SSD using something like MiniTool Partition Wizard to clone it with ...
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1answer
265 views

TRIM an SSD after restoring from an image?

I just restored a full disk Windows 7 image to an SSD with dd, and am now running off of it. I'm concerned that the SSD thinks that all of the unused sectors from the image are actually used sectors, ...
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3answers
838 views

Can I emulate TRIM by writing all zeros?

Before an SSD sector1 was ever written to, it looks like all filled with zeros. So, if I write all zeros to a sector, for the purpose of functionality, it will look just like a free one. Thus the ...
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1answer
2k views

Auslogics Disk Defrag SSD Support

I am using Auslogics Disk Defrag in my computer to defrag my drives. Recently, I change my main system drive into an SSD. I then enabled the TRIM feature in its SSD support settings. Question is, if ...
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168 views

Is SSD TRIM deleting your System Restore points in windows?

I've had system restore enabled on Windows 7 with a SSD with TRIM enabled. It would often have a message saying 'Creating restore point' but I never actually saw any restore points in the restore ...
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0answers
200 views

SSD TRIM Garbage Collection and affect on MFT Meta Data (security)

Does the way a SSD with trim and garbage collection handle deleted files make any changes to the deleted files MFT meta data entries for tiny files? What affect specifically do SSD's have on tiny ...
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1answer
381 views

SSD Trim and file slack space

Does Trim work in the background to tell the SSD to delete slack space of files that get smaller or larger or get overwritten by smaller files? Can remnants of say an audio or video file or picture ...
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1answer
380 views

SAMSUNG 850 EVO 250GB - TRIM, GC - recoverability of files

Can't find this information anywhere - hoping someone will know. What type of trim does this drive have enabled when trim is turned on? Is it DRAT? Does it zero out files once they've been deleted ...
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1answer
1k views

How to TRIM the whole partition in FreeBSD to save space in VirtualBox

I am running FreeBSD 11 amd64 in VirtualBox 5.1.12. I have enabled TRIM in VirtualBox (nonrotational="true" discard="true"): <StorageControllers> <StorageController name="SCSI" ...
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0answers
252 views

Security on SSD with Trim - how Trim handles small files and files in the MFT

I can't find any specific answers to this and I've looked all over. This query is about windows 7 and ntfs trimmed SSD using a SATA II port. I've noticed video files that I try to recover on a ...
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1answer
807 views

Does wear leveling function normally without TRIM?

No matter whether it's about UEFI, phones, or SSDs, Samsung apparently isn't particularly good at implementing standards. Unfortunately, some year ago, I bought a Samsung SSD 840 PRO Series SSD for my ...
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588 views

Does VMware Workstation 12.5.1 support TRIM

Does VMware Workstation 12.5.1 support TRIM for a guest OS? If so, what apart from putting: scsi0:0.virtualSSD = 1 in the .vmx file, what configuration is required to get it to work? I am trying ...
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417 views

Win 10 does not run scheduled optimisation task

I have win 10 with all latest updates (14393.321) In my drives tab I set SSD optimization to run daily. But this task does not run in 9 days.
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80 views

Why can't I find recently deleted files on two computers? But I can find old files?

Tried this on two computers. Both computers are running Raid 0 SSDs, one Windows 7, other Windows 10. Both computers had files deleted from the recycling bin. Before even resetting the computers and ...
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2answers
375 views

Does scrubbing a ssd drive work to completely remove deleted files in situations where the trim command is not supported?

There are situations where it's not possible to run the trim command, for example some external usb ssd drives don't support it. If you're not concerned with the ssd drive degrading in any way, ...
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2answers
4k views

Card/USB flash storage: how to trim/discard/reset after heavy usage?

I wonder, if it is possible to 'reset' the controller of an USB drive or a memory card to treat as 'unused' on Linux (Fedora 24)? Background: I have overwritten an USB drive from /dev/urandom. I.e., ...
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626 views

SSD encryption the proper way

When encrypting devices it is always recommended to fill it with random data first, or it would become evident that the drive is encrypted and how much encrypted data there is. I've read that on an ...
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0answers
586 views

Shockingly slow SSD reads on Debian Jessie

I set up a desktop computer after nine months in the attic. I somehow doubt this is related but I don't remember it being this way. It took six minutes or so to boot, another couple minutes for GUI ...
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1answer
4k views

Linux, SSD, BTRFS and Trim

I'm running a Linux system (based on Gentoo) with a BTRFS file system installed on an SSD (Toshiba Q300 with 480GB net). My /etc/fstab looks like: UUID=14cb9b65-... swap swap defaults,...
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1answer
40 views

Removing terminal special character `^@`

when I less a file, it looks like this. ^@00002201-271f-43b9-81a7-000b0a31abe5 ^@00004695-2281-44df-b18d-bd68b63fced4 ^@00009273-3a0f-4c2e-b708-805e02147f55 ^@0000a0e6-3889-43f2-9635-63e114c38f29 ^@...
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2answers
2k views

Does TRIMming too often reduce the lifespan of a SSD?

I read that Linux doesn't issue automatic TRIM commands (the discard mount option), due to performance problems. I've added fstrim -a in my crontab to TRIM once a week. Does issuing fstrim too often ...
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3answers
2k views

Trimming NTFS and ext4 Formatted SSD

I have a Kingston SSDNOW V300 120 GB SSD with Ubuntu 14.04 installed on the 32GB ext4 partition. When I issue the command fstrim -v /, it responds, 30998127689 trimmed. My computer detects it as two ...
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1answer
379 views

Confused whether to switch from ext2 to ext4 or not

I recently installed Xubuntu 14.04 on my old laptop and decided to buy an SSD for the new OS. I installed Xubuntu on 32GB ext2 formatted partition because I read that it doesn't have journalling which ...
2
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1answer
565 views

File system which supports trim command for shared SSD

I have a ~500GB SSD and I want to read/write on it from both of Windows and Linux. As far as I know, there are three choices for file system of shared drives: FAT32, NTFS and exFAT. FAT32: Not an ...
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55 views

When does SSD static wear leveling operation occur, possible to measure?

Scenario: 1) New 60GB SSD Drive 2) Install OS and Programs 40G 3) Assume windows pagefile.sys file size is 16G 4) The bulk of the OS and Programs are rarely (if ever) updated for ...
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0answers
602 views

Does Windows trim unpartitioned (unformatted) space on an SSD?

Laptop with Windows 10 Pro v1511 x64, with 512 GB Samsung SSD 850 PRO as system drive. In an attempt to overprovision space on the SSD, I just shrunk the system partition from about 475 GB to 400 GB. ...
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3answers
3k views

What SATA version do I have?

I wonder what SATA version my laptop uses as I intend to install an SSD and want to choose the most suitable TRIM options in (probably Debian) Linux. The information presented by smartctl is: Model ...
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1answer
2k views

SSD TRIM support on RAID-1 array through Intel RST

I'm making the jump from HDDs to SSDs on my home desktop, and I'd like to retain a basic level of redundancy (RAID-1) like what I have with my HDDs. Right now, I'm using Intel's RAID controller on my ...
3
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1answer
2k views

Samsung 850 Pro SSD on Linux

I've read about the queued TRIM issue of Samsung 850 Pro SSD on Linux. They are blacklisted in the kernel for queued TRIM operations. Are there some other, "unqueued" TRIM operations which are then ...
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4answers
19k views

TRIM Debate: Mac OS X El Capitan & Samsung 8xx EVO/PRO

As you may know there are opposing arguments on enabling TRIM on Mac OS X systems. Some people claim that, since it’s blacklisted in Linux systems, TRIM should never be enabled in Mac OS X systems for ...