![]() ![]() Voltage irregularities that affect the smooth amount of voltage delivered from the motherboard to the USB flash drive. If your hardware is very old try creating an Ubuntu Minimal USB for Ubuntu 20.04 and earlier.Ĭheck the Ubuntu ISO that you downloaded against its SHA256 checksum to verify that the checksums match. Reformat the flash drive and reload the Ubuntu ISO from an application for making a live USB. It's worth a try if you have two or more USB flash drives. Ubuntu will boot after making the Ubuntu live USB on a different USB flash drive. This could even be a new flash drive which I assume to be not corrupted. Otherwise it is often possible to circumvent a hardware issue by installing Ubuntu using the lightweight, text-based Ubuntu minimal CD/USB.īad USB flash drive. In this case enabling the nomodeset kernel boot option might work. ![]() For example, safe graphics is not working is a clue to an underlying hardware-specific problem. Sometimes it is possible to troubleshoot why a bootable USB doesn't boot if it is hardware specific (see below screenshots). I know from experience that if a GUI USB creator like Rufus or Startup Disk Creator doesn't work then dd won't work either for the same (usually hardware-specific) reason. Thanks to karel and sudodus for help with the answer. USB was removed from computer before ISO file is completely copied Motherboard BIOS limitation with multiple USB devices Persistence file full of data, or file update attemptedĬorrupted flash drive, reformat and reloadĬomputer does not meet minimum specs, a lighter version of 'buntu is required Persistence file/partition reused from different version Persistence partition is not an ext filesystem The word "persistent" is missing from grub.cfg, txt.cfg, syslinux.cfg or text.cfg Incorrect file type for vmlinuz and initrd (.efi and. Incorrect persistent-path, (if used), in grub Problems with BIOS or UEFI boot partitions or files.ĭrive not compatible with computers BIOS or UEFI boot modeįstab entry in Full install USB referring to HDD's efi boot partition on drives created on uefi machines. I installed Rtools and put it in the directory they want, but still nothing can be installed or loaded.Īny idea what might be happening? Not two months ago, I was able to install ggplot2 and I've been using it ever since (barring the past few days).There are many reasons a persistent USB might not boot. I've uninstalled R and Rstudio multiple times, but the problem persists. I don't understand why this has happened. LoadLibrary failure: The specified module could not be found.Įrror: package ‘Matrix’ could not be loadedīut the same problem happens when I try to install Matrix. Unable to load shared object 'C:/Program Files/R/R-4.0.3/library/stats/libs/圆4/stats.dll': Package ‘glmnet’ successfully unpacked and MD5 sums checkedĪnd when I try to load it: library(glmnet)Įrror: package or namespace load failed for ‘Matrix’ in inDL(x, as.logical(local), as.logical(now). Installing package into ‘C:/Users/User/Documents/R/win-library/4.0’Īlso installing the dependencies ‘iterators’, ‘foreach’, ‘shape’ Please download and install the appropriate version of Rtools before proceeding: When I try to install, for example, glmnet, I get the following error WARNING: Rtools is required to build R packages but is not currently installed. And packages that I do have, like ggplot2, won't work. However, I'm no longer to install packages. I've had RStudio for months now, and I've never had a problem installing packages. ![]()
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