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I have a Western Digital My Book and a Toshiba external (non-portable) drives, both 3 GB. I have a directory with about 250K files that has a net file size of about 200 GB (i.e., as confirmed by both WinDirStat and Explorer Properties. However, the My Book shows having about 400 GB less available space than the Toshiba. I had even did a Quick Format on it, and copied over from the Toshiba, but I still have the problem.  Perhaps I should do a non-Quick format and try again? The My Book passes the WD Tools tests.
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Ensure that the cluster size on both drives is the same. You can see the cluster size by running chkdsk on each drive from the command line.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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The type of the file system is exFAT.
Windows has scanned the file system and found no problems.
No further action is required.
For the My Book:
2930251776 KB total disk space.
443215872 KB in 259860 files.
20007936 KB in 19539 indexes.
0 KB in bad sectors.
2048 KB in use by the system.
2467025920 KB available on disk.
1048576 bytes in each allocation unit.
2861574 total allocation units on disk.
2409205 allocation units available on disk.
For the Toshiba:
(NOTE: It has other directories.)
The type of the file system is NTFS.
Stage 1: Examining basic file system structure ...
793088 file records processed.
File verification completed.
Phase duration (File record verification): 1.59 minutes.
1 large file records processed.
Phase duration (Orphan file record recovery): 0.00 milliseconds.
0 bad file records processed.
Phase duration (Bad file record checking): 1.25 milliseconds.
Stage 2: Examining file name linkage ...
37 reparse records processed.
Index entry LUMIN8~1.MID in index $I30 of file 25311 is incorrect.
866720 index entries processed.
Index verification completed.
Phase duration (Index verification): 3.08 minutes.
Errors found. CHKDSK cannot continue in read-only mode.
@@@@
So it would appear that if any hard disk is bad, it is the Toshiba!
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Yes, it appears that there is a problem on the Toshiba drive. I would copy all data on it to another drive, and then run chkdsk /F on the drive. As you can see, there is at least one file that is (probably) corrupt, and more may be discovered in later stages of the chkdsk. Note that if chkdsk discovers some problems, you should run chkdsk /F again, until no more problems are discovered.
It also appears the the WD drive is using an inefficient clusters size - 1MB/cluster. Unless most of your files are large (e.g. video files), you may wish to reformat the WD drive to use a smaller cluster size, and/or to use NTFS rather than exFAT.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Yes, I am running chkdsk on the Toshiba, and it ill take about 24 hours!
I will reformat to NTFS with the same smaller cluster size as the Toshiba.
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I was gonna suggest volume shadow copies, but I don't believe that would survive a format. Cluster size, as per the other messages in this thread, seems more likely.
Another thought: I've come across two separate drives from different manufacturers, both sold as "8TB" drives. Blank, one showed the total disk space as something like 7.5GB, the other closer to 7.1. Some BS about inconsistently multiplying by 1000 as opposed to 1024.
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You have 250,000 files occupying ~200GB on the source, so each is on average under 1MB (including the wasted space due to unfilled allocation units, unknown but assume it is small, as it probably will be for NTFS). The allocation unit in the WD is apparently 1MB - on average the wasted space will be half a unit per file, ie 125 GB. But for tiny files the wastage could be nearly 1MB. Could that be the explanantion for most of the difference?
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Watching this cinema-quality video of master jeweler Pablo Cimadevil creating a five-carat yellow-diamond ring with intricate pavé (small diamond inlay), transported me to a kind of inner "paradise lost." [^] ... I hope it is valuable, in some way, to you !
Pablo Cimadevil (spinal cord injury age 4) was a gold medalist in paraolympic swimming: "he donated the gold medal that he won at the 2000 Paralympic Games in Sydney to raise money to support the rehabilitation of children with impairments." [^]
here comes an old-man's belly ache ?
There was a time (circa 1987~1992) in my little accidentally started-after-age-forty career wanderjahr in the digital wilderness when I experienced programming as a kind of meditative craft: everything was new, shiny 
Alas, those days (daze ?) are now fossil bones in a museum, out of place relics in a brave new world of frameworks-within-frameworks, and technology initiative demolition-derbies.
p.s. in the last year I have found pleasure in designing rings, and interacting with the local (Thai) craftsmen who make them for me ... without many of the sophisticated tools Pablo uses.
Learning about gems connects with my years of interests in ancient Asian trade routes, and their role in transmission of material, aesthetic, and intellectual, culture
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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Oh wauw. Thank-you so much - I really needed that.
Feels like another life now, I actually was a jeweller up until about 15 years ago. It's a lot easier than most people imagine.
I mean, apart from the design aspect that I always disliked and struggled with, many of the hand-tool skills are simply a product of time spent. It's engineering with simple maths, on a scale that makes it convenient. Well, it was back then when Australia was being flooded with imported mass-produced stuff.
Now though, 'everyone' has access to a 3d printer. That's something I wish I'd stayed a bit longer for. Design the ring in CAD program of choice, print it in wax or PLA and send it off to the casters. On one hand, you don't have any (proof of hand-made) solder joints. On the other hand, you don't have any (weaker and prone to corrosion) solder joints and there's almost no labour in it to be paid for. Depending on the exact design, stones that are good enough can be put into the wax and have the metal cast around em!
A fella on YouTube somewhere called Jason Welsh, does quite a bit of electroforming and electrotyping.
I've just discovered the Silicon Sealant + Corn Flour + Acrylic Paint = cheap mould making putty trick.
Having bought a second-hand car last time, it came with the usual signs of old age. Amongst those signs, a few missing badges. Well, I've moulded copies of the missing ones and painted the inside of those moulds with graphite lock lubricant. Off it goes into the CuSO4 bath for about a week to form the required thickness/weight.
:laughs:
Last night I was seriously considering a Cockcroft-Walton voltage multiplier to step the 24 or so I have to about 100 or more. That graphite is really not very conductive - 2.4mA from a 24v supply tells me I've got about 10k. Forming at 6mA for 24 hours creates almost no deposition - 0.17gms of copper. I'm going to want 20 - 30 grams.. 
Thanks for the diversion. 
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thank you, for your thoughtful reply ! at age 77, with limited vision, i don't think hands-on making is a direction i will go in, but the design aspect, starting as a hobby, is, now, without any real attempt at marketing, beginning to pay for itself, as friends want rings ...
CAD modeling of complex jewelry settings is a direction i want to go in.
(not for sale) This is one of my first originals ... a (USA) size 12 man's ring, with a 40 carat rutile quartz stone set in gold-plated .925 silver with rosettes on the sides with tiny citrines: the design, which I call "Sol Invictus," is influenced by the solar imagery associated with that god, with Mithras, Sabazius, Ahura Mazda, etc. [^]
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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And also serves as a brass knuckle! 
I think Akhenaten would have liked it.
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Too bad that Akhenaten was "erased" from pharaonic history by the restorers of the polytheistic religions ... can't see the type of elaborate jewelry that (his possible son) Tutankhamun was buried with [^] ... that meteor-impact produced glass scarab is stunning.
Examples of what is now called Libyan desert glass do come on the specialty gem market [^] but, a fine appraised piece is far beyond my budget
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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I'd never heard of Libyan desert glass. Interesting...thanks!
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I can't repeat it here, but it was mother-![Elephant | [mastadon]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/elephant.gif) ing gold!
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, weighing all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius
Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies.
-- Sarah Hoyt
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Nice.
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Once again, some of the team members talked about the need for a new version of an existing tool for our cloud environment, and after we all talked about how it needs to be done, nobody stepped up and volunteered to do it, so I've taken it on myself to do.
Before we moved to the cloud, we used the existing "deploy tool" to generate packages for the various deployable apps and databases (and we had to do this for each environment on which the package would be deployed). The tool would create batch files that actually deployed a hierarchy of folders and files onto the various web servers (or dacpaks for databases). The idea was that the user pre-compiles the selected project on a "deployment box", and then runs this tool to assemble the associated files into the necessary folder/file hierarchy. It's even more convoluted than I've described, but I didn't want to turn this into that long long of a message. Suffice it to say, that a) the UI is not the best, b) the process is convoluted and prone to error, c) there were bugs in the app that nobody seemd interested enough to fix, and d) the app was no longer suitable for our current environment or desired processes.
In the new version, the user selects the desired app(s), and then clicks a button to pull the code down from TFS (for the specified change set or label), build it, and zip it, with no further interaction by the user. The user has the option of running Visual Studio and manually compiling the app if he wants/needs to do it that way. Coupling this tool with my new in-memory connection string code (also created without being told/asked to), we can create a single package to move from environment to environment as testing/validation proceeds, from dev, through to production.
I spent Friday working out the mechanical stuff regarding getting info from TFS, and building from the commandline with Visual Studio, and this morning, I started working on the app settings. I'm going to implement the app in the form of a wizard so that the user is forced to review the app prerequisite actions before actually clicking the button to generate the selected packages.
I'll probably get reprimanded again for stepping out of the "bounds of the contract" again, but I honestly don't give a sh*t. We gotta kick the can down the road, and I'm the only one willing to wear suitable footwear for the task.
I love this stuff...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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#realJSOP wrote: I love this stuff...
Of course you do. Why else would you put yourself through this, so close to retirement.
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It's an 80 mile (130km) round trip, but hey! It's taken long enough to get to me ...
And before you ask: Yes, I will be attending.
UK has jabbed over 26,000,000 inhabitants at least once allready, so we should be over half way to everybody by the time I get it. That's a lot of complicated logistics going on there (ignoring the political "difficulties"). I'm reasonably impressed.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Very sensible. We (me and SWMBO) are waiting the call for our second shot.
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Glad to hear! Herself and I had two shots of the Pfizer version. There were no side effects worth mentioning.
Get me coffee and no one gets hurt!
modified 20-Mar-21 18:04pm.
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Dunno - they don't tell you that till you get there. Probably AstraZeneca.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Had my first one yesterday. Have some paracetamol afterwards and some before you go to bed.
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I got my first shot last week. second shot in 3 weeks. pfizer.
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