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Differential Directory, indexing method 3 Weeks Ago by xrjf … this position in the index. * With at most one single disk read, assuming the index is in memory, it determines whether… left and right nodes (if they exist), and to the disk record where the full key and its data are stored…, and only a maximum of 3 nodes and a single disk read are required per insertion. Re: Is linux your daily driver? 4 Weeks Ago by Reverend Jim … tried to explain to the class what "formatting a disk" meant. He talked about magnetic fields, tracks, sectors, etc… Re: Differential Directory, indexing method 3 Weeks Ago by rproffitt DiDi appears to be some China based UBER service but then again I can't find a question or much else to discuss here. Re: Differential Directory, indexing method 3 Weeks Ago by xrjf About DiDi DiDi (Differential Directory) was originally developed as part of my thesis project in the early 1990s. The name bears no relation to the more recent Chinese ride-sharing company. At the time, DiDi was a novel approach within its academic context, but a change in legislation unfortunately led to the closure of the school and the … Re: Differential Directory, indexing method 3 Weeks Ago by xrjf For example, as Donald Knuth points out in The Art of Computer Programming, the theoretical lower bound for comparison-based sorting algorithms is K × log₂(N). I developed a very simple method that matches this performance. However, DiDi goes far beyond: its performance is proportional to K × (maximum key length), regardless of the number of … Re: Differential Directory, indexing method 3 Weeks Ago by xrjf As an illustration, consider the theoretical lower bound for comparison-based sorting, as stated by Donald Knuth in The Art of Computer Programming: K × log₂(N). I developed a simple method that matches this limit. For example, to sort the list {2, 5, 7, 1, 4, 3, 8, 6}: Sort pairs: (2, 5) → [1] (1, 7) → [2] (3, 4) → [3] (6, 8) → [4] Merge… Re: Differential Directory, indexing method 3 Weeks Ago by xrjf "Just to clarify a previous mistake: the efficiency should be K × N × log₂(N), not K × log₂(N) as I initially wrote." Re: Differential Directory, indexing method 2 Weeks Ago by xrjf I've just made an update because some records weren't being added properly. The issue was that the form didn't take into account that the register field (in the call to DiDi) is passed by reference. Re: Differential Directory, indexing method 1 Week Ago by xrjf Just a quick update for anyone interested: I have revisited and significantly improved the code, aiming for a more professional structure and better performance. The updated version avoids freezing the UI during long operations and follows more robust programming practices. If you’d like to see DiDi in action, there is also a video … DISK IMAGING - free software 19 Years Ago by sunandoghosh DISK IMAGING - free software Hi I want to create disk image of my hard disk....an exact copy... which is the best freeware utility which can create a great perfect back up image...????????????? regards, sunando sunandoghosh at rediffmail dot com Disk Cleanup 20 Years Ago by nanosani Disk Cleanup has a lot of options when its opened from … Re: Disk Cleanup 20 Years Ago by nanosani No! dismounting means that it'll disallow all io activity to that particular drive ... and if the drive cannot be dismounted then it'll ask to run disk cleanup on next boot or not. Disk read error? 16 Years Ago by kenny1989 …information on the error. Close the Disk Management console, then restart Disk Management, or restart your computer."… Event Log: Log Name: System Source: Virtual Disk Service Date: 06/02/2009 20:45:26 …<System> <Provider Name="Virtual Disk Service" /> <EventID Qualifiers="49664… Disk Cloning vs. New Hard Disk 14 Years Ago by jovypinoy …spinning. I'm worried that our server's hard disk was crashed. When the motherboard repaired. We tried …immediately the hard disk and fortunately it works so fine. It loads the … data will be copied. 2. Purchase a new hard disk - Copy all the files manually. Manually config network configuration… Disk Utility says, "unknown error -20" 17 Years Ago by bigtalk … me that I needed to initialize the new disk. Disk Utility opens up. It sees the drive.…error -20". I try to erase it. Disk Utility says, "unknown error -20". I… OS X wants to initialize it too. Disk Utility returns the same errors as with the…Master. I jumpered them as Cable Select. Disk Warrior doesn't see the drives. My question… disk read error 17 Years Ago by RanipaKeyur … i boot my os(windowsXP) i am getting message[B] disk read error[/B]and press clt+alt+del to restart… another os( means with onother pc )as the slave(secondary disk) window is not detecting it. bios is showing the hard…-disk but window is not detecting it. can any one solve … Re: Disk Defragmentation ? 16 Years Ago by tigerbright … - can be good for 20% improvement in hard disk drive intensive tasks such as full system maintenance scans … rate between the fastest and slowest location on the disk I suggest install a utility called HD Tune (freeware… in charted form how quick the disk is transferring data thoughout the whole disk surface [url]http://www.hdtune.com… Re: Disk read error? 16 Years Ago by kenny1989 Having trouble - think its the mbr and vista disk does nothing about it really. (used command prompt with command &…") HDD still isn't detected by the disk (when u insert vista disk and press r it does not list my…) but Partition Doctor 3.5 recognises the partitions on my disk and that they should be NTFS and something else but… Re: Disk Cloning vs. New Hard Disk 14 Years Ago by lasitha2005d … occurrences of errors or warnings. If you could analyze the disk using a error recovery program (software level - I do not… using low level utilities since it will corrupt your entire disk) and locate the sector. If its not part of the… Disk reading error? 20 Years Ago by niceguygaurav … and received the following message "a disk read error has occurred" I stuck …in my xp disk and clicked on repair, which fixed the …problem occurs. I looked at the disk using the XP disk and for some reason the computer …shows unknown under the disk format type (should be FAT16, 32 or… Disk Defragmentation ? 16 Years Ago by rvp11 … system doesn't exactly erase the file on your hard disk, so u can using some special programs retrieve or edit… that file. This 'deleted' disk space and the file u deleted remains on your hard… something of that sort. OR is you defragment your hard disk then all the files that the system renders deleted, are… Re: Disk Defragmentation ? 16 Years Ago by joshuah … system doesn't exactly erase the file on your hard disk, so u can using some special programs retrieve or edit… that file. This 'deleted' disk space and the file u deleted remains on your hard… something of that sort. OR is you defragment your hard disk then all the files that the system renders deleted, are… Re: disk cleanup button missing 16 Years Ago by compdoc … you'll see buttons for backing up and defragmenting your disk. On the General tab, you'll also see a …button labeled Disk Cleanup. By default, Win2K and later run the following …programs for Disk Cleanup: - Disk cleanup--C:\Windows\system32\cleanmgr.exe /D %c 2… Disk Access: Sense Operation Failed 20 Years Ago by Jessica618 … about 13-15 seconds into it I get this error: Disk Access:Sense Operation Failed I can't get it to… read the disk. The disk is in the correct tray (I switched it between… the two and get the same thing) and the disk is perfectly intact and free of scratches, fingerprints, and dust… Re: disk read error 17 Years Ago by The New Normal A drive won't show up in 'my computer' if there's no partition. You can right click on 'my computer', go to 'manage' then to 'disk management'. Your drive should show up here. I'd be a bit wary of using a drive that gives you disk read errors. Might be time to invest in a new one. Re: Disk read error? 16 Years Ago by Suspishio I didn't suggest this because I thought the disk couldn't be accessed in the USB enclosure. So yes - … Re: Disk read error? 16 Years Ago by bobbyraw if your windows boot up and you can acces the drive from a usb or even from your internal attachment. use a program name easy recovery to recover your files. then you can format the hard disk. i use this program to recover a sid that was giving a I/o error when i try to acccess it from windows. Re: Disk read error? 16 Years Ago by kenny1989 … and ran it (took around 4 hours) 2. Used Vista disk to get into start-up repair. 3. Booted using other… Disk Defragmenter Error 15 Years Ago by Meros My disk defragmenter is not able to defrag my drive… through the internet and was able to place Disk Defragmenter files back into the System Files but …now I get another error that says "Disk Defragmenter has detected that Chkdsk is scheduled to run… and malware but still can not run Disk Defragmenter Please Help Thank You for all who do… disk E and OS (C) 14 Years Ago by Tumbleweedracef … with Windows 7 on it. I am having a disk space problem. A warnning states [COLOR="Red"…;]Drive E:\ has only 14MB of free disk space. To prevent information loss and performance problems, youneed… to free up disk space.[/COLOR] There are 3 disks listed under "…