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DR-DOS (written as DR DOS, without a hyphen, in versions up to and including 6.0) is a disk operating system for IBM PC compatibles. Upon its introduction in 1988, it was the first DOS attempting to be compatible with IBM PC DOS and MS-DOS (which were the same product sold under different names).
DR-DOS was developed by Gary A. Kildall's Digital Research and derived from Concurrent PC DOS 6.0, which was an advanced successor of CP/M-86. As ownership changed, various later versions were produced with names including Novell DOS and Caldera OpenDOS.

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  1. R

    Baxi 600 new version vs the older model

    Baxi have changed their 600 and 800 ranges....they look completely different inside and out .....has anyone got an opinion on the new version.
  2. B

    Triton shower as2000xt thermostatic shower replacement not SR version

    Dear Sirs, I am looking to replace my Triton AS2000XT thermostatic shower but not with the updated SR version as this seems to have had not very good reviews which is a shame as the XT obsolete version has served me well .I have had two installed over the last ten years.I contacted my...
    • big john hog
    • Thread
    • america replacement shower thermostatic triton usa version
    • Replies: 3
    • Forum: USA
  3. S

    Viessmann 200-W Combi 35kw (New 2019 version) Installed - Advice?

    Evening All, Hoping some plumbing/heating engineers/other knowledgable folk on here might be able to assist with some questions about my new boiler. We had the new Viessmann 200-W 35kw Combi installed this week by a Viessmann registered local heating engineer. It's the new 2019 version with...
    • StumblingTrout
    • Thread
    • 200-w advice america combi installed usa version viessmann
    • Replies: 12
    • Forum: USA
  4. A

    Version boiler flow rate.

    I have decided to go for the Version boiler when I get my system upgraded but I currently have a Glowworm 35 store which gives lashings off hot water which ilike, so I'm looking at the 111-w as its the same performance as the glow worm, I did initially go for the 100w button I was a bit...
  5. R

    Backnut brass wastes vs top screw version

    Wednesday: my day off. I've long been fitting the brass bodied type of waste with the loose overflow connexion and backnut in the belief that they would have superior flow to the plastic-bodied type with a set-screw down the middle that holds the two halves together. Today I removed the...
  6. G

    Chronos Gas Rate Calculation software is now free.

    Due to popular demand, we've created a free, ad-supported version of our Chronos Swiss Army Knife software. Carry out gas rate calculations, calculate BTU/Kwh for a room. Save your gas rate calculations for review later. This app used to cost £1.99, now we're giving it away for free. There's a...
  7. R

    Ideal Vogue & Opentherm via Honeywell T6 Lyric (wired version)

    Hey all, apologies for the long post: I've had a new Ideal Vogue boiler installed with a T6 wired thermostat so the OpenTherm is activated as confirmed by the boiler. I also have the outdoor sensor installed but I now understand that when OpenTherm is used it ignores the outdoor sensor...
  8. P

    What's the NLT version of a radiator?

    Hi, What does the abbreviation "NLT" mean for a radiator? I have to choose between two radiators, and the only difference is that one is the NLT version (higher BTU rating). Thank you.
  9. R

    Veto Pro Pac Tool Bag OT-XXL

    Anyone know anywhere in the UK that still sells these? I cant seem to find them for sale anymore. I have the XXL F version but want to get the tote version. Cant seem to find them anywhere, even on the manufacturers website :(
  10. M

    What is the UK version of this fitting called?

    Hi Again, I'm still looking at different fittings. Can anyone tell me what the UK version of this is called...
  11. L

    Worcester Compact - CDi or Si version?

    Looking for a really, really compact combi for a small 2 bed, 1 bathroom flat with very restricted kitchen space. Smallest decent one I can see is the Worcester Greenstar. By all means recommend alternatives, but 690x390x280 looks hard to better. I can't find any comparisons between the Si and...
  12. D

    Sparky version of the ddm2

    Anyone using this core gun ?
  13. D

    makita sds

    Anyone use one of these ? Only be using it for drilling blow offs etc Makita 240V 24 SDS+ Rotary Hammer HR2470T-1/2
  14. G

    Wireless room for 24i Junior (old, non-greenstar version)?

    Hi, I have one of these, which is older than the greenstar version. I believe it is called the RSF. I wanted to buy either of these two, but some posts I've seen elsewhere suggest that they may only work with the newer greenstar, not my RSF: Any advice appreciated, thank you, gbar
  15. M

    Cheap Milwaukee C12PD-202C Percussion Combi Drill

    Just a heads up to say Toolstation are selling the 12V Milwaukee combi drill with 2 batteries, charger and carry case for less than £100.
  16. cr0ft

    Upgrading iPhone to latest version of iOS - Warning!!

    Hi all. Anyone else out there who has an older iPhone, i.e. 4S or earlier? If so I would suggest you don't take their free 'upgrade' to iOS 7. My phone is now completely unusable as the screen keeps turning itself off. A factory reset hasn't sorted it and Apple have no option to allow you to...
  17. Neil T

    OnTrac invoice app FREE

    As I've just set up my own business, I'm all for saving money and I've found this app for blackberry and android phones. OnTrac allows you to email invoices, reciepts, estimates and statements on the go. It also sends copies to your own email so you have a copy. There is a windows desktop...
  18. P

    Check this video out Full Metal Jacket Disney version.

    Full Metal Jacket Disney Version - YouTube :smilielol5:
  19. P

    A Christmas Tale...Plumbers Version

    Well it was Christmas day ,a day when all plumbers across the land have little smiles on there faces caused by wind from over indulgence the night before, hoping it will stay there with over indulgence from Xmas day as well, happy days We get up, thinking a day off with the family, a knock on...
  20. S

    Megaflo or Plumb Centre Store Branded Version?

    Hi there. I am new to site and need some expert advice... Have we installed an inferior system?:confused: We recently asked a plumber to install a megaflo boiler into our house and new boiler (Worcester Greenstar 40 CDi) they advised us that a branded Centre Brand one was as good and was in...
    • simonabsolute
    • Thread
    • accumulator bar budget centre cold combi cylinder fitting flow hot install job mains manual megaflo megaflow plumb plumber pressure shower store taps thermostatic unvented valve version
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
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